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Author SHA1 Message Date
4f3c87f8c4 Merge pull request #1423 from akohlmey/next-patch-release
Step version string for next patch release
2019-04-30 19:52:35 -04:00
02d5f17a18 Merge pull request #1437 from lammps/gpu_cmake_bugfix
Fix GenerateOpenCLHeader CMake utilitiy to avoid uncompilable CL code
2019-04-30 19:05:59 -04:00
7fbd409f5b Fix GenerateOpenCLHeader CMake utilitiy to avoid uncompilable CL code 2019-04-30 12:59:27 -04:00
faa0da9976 Merge pull request #1434 from ellio167/reaxc-multi-instance-fix
Reaxc multi instance fix
2019-04-30 12:03:43 -04:00
e08080cae5 Merge pull request #1436 from rbberger/gpu_opencl_bugfixes
GPU package bugfixes
2019-04-30 12:02:52 -04:00
7b7f405d2c Merge remote-tracking branch 'origin/master' into gpu_opencl_bugfixes 2019-04-30 01:39:19 -04:00
66d94572e0 Add missing includes to OpenCL CMake builds of re_squared and tersoff kernels 2019-04-30 01:37:27 -04:00
8145c5028d Fix OpenCL compilation errors due to bad comments in macros 2019-04-30 00:44:12 -04:00
0005ee3e93 Merge pull request #1435 from akohlmey/collected-small-changes
Collected small changes for next patch release
2019-04-29 20:19:50 -04:00
8d9697dbf6 Merge pull request #1420 from dsbolin/gran_mods
Updates and bugfixes to GRANULAR package
2019-04-29 14:16:25 -04:00
f052509015 Merge pull request #1421 from julient31/gneb_spin
Adding a GNEB implementation in the SPIN package
2019-04-29 14:14:58 -04:00
97baee4931 Commit2 JT 042919
- modified energy/torque tolerance for faster convergence in
examples/SPIN/gneb/skyrmion/in.gneb.skyrmion
2019-04-29 08:23:57 -06:00
96e51d11ad equilibrium angle must be converted to radians in angle style table 2019-04-29 10:09:33 -04:00
0bb2e004ab Commit JT 042919
- corrections Axel 1
2019-04-29 08:08:56 -06:00
98daf8f825 optimize granular examples and include logs 2019-04-29 09:48:57 -04:00
af8a71b1ad while space and source formatting cleanup 2019-04-29 09:17:29 -04:00
0fac0e18d1 no need for libm or GSL to compile the interpolate code 2019-04-27 17:50:12 -04:00
8102fdcf24 make sure r3inv is initialized when lj and coul cutoff are different 2019-04-27 14:51:37 -04:00
5d9e85d840 make sure r6inv is initialized and not computed multiple times 2019-04-27 14:43:13 -04:00
d190b76075 remove unused custom constructor 2019-04-27 13:22:14 -04:00
930748f6f2 change neb/spin class names to better match the conventions used in the rest of LAMMPS 2019-04-27 13:16:37 -04:00
6fc2bda01c some whitespace cleanup 2019-04-27 07:52:25 -04:00
8c6e1e2448 fix python package issue updating the time stamp on the wrong file 2019-04-26 15:52:56 -04:00
809bd3d1bb update .gitignore for recent additions 2019-04-26 15:52:16 -04:00
d9fc4a152b simplify handling of fix id for fix reaxc. remove shadowed variable. 2019-04-26 14:25:57 -04:00
0e7d647aeb Switch to sprintf() instead of std::string etc. 2019-04-25 16:50:17 -05:00
ceff147fc0 Merge pull request #1427 from e-kwsm/fix-typo
Fix typo [skip ci]
2019-04-25 17:01:17 -04:00
8d9a44a837 set april 30th for next patch release 2019-04-25 16:55:46 -04:00
e3d7b52b80 Merge pull request #1431 from Adrian-Diaz/print-error-messages
flushing screen and logfile stdio buffers to see more error messages for error->one calls
2019-04-25 16:51:37 -04:00
c55174ac1d Merge pull request #1424 from julient31/setforce_spin
Adding a fix setforce/spin to the SPIN package
2019-04-25 16:37:41 -04:00
b93d9e6f7f reaxc: Fixes to allow multiple object instances
Move LR into system structure
Make fix_reaxc have unique id for each instance

closes #1432
2019-04-25 10:44:08 -05:00
16fd5904ed Commit2 JT 042519
- slight correction in doc/src/command_list.txt
2019-04-25 09:31:57 -06:00
7c3f619e13 Commit JT 042519
- moved examples/SPIN/gneb/interpolate/ toward
tools/spin/interpolate/gneb
- added gneb in the command files in doc/src
- modified the error messages in neb_spin.h/cpp
2019-04-25 09:18:33 -06:00
6088f2a6a2 One more bug in pair_granular.cpp, where JKR cutoff was incorrectly computed. Thanks to Ishan Srivastava for finding this one 2019-04-23 22:58:42 -06:00
0673f6f2b9 Fixes a bug in pair granular that caused JKR cutoffs to be set incorrectly when multiple types with multiple cohesion values are used 2019-04-23 15:52:32 -06:00
37d84de09c flushing buffer to see more messages for error->one calls 2019-04-18 15:55:21 -06:00
ebee2b588c Merge branch 'gran_mods' of github.com:dsbolin/lammps into gran_mods 2019-04-16 17:00:10 -06:00
4b2388339e Fixes bug in calculation of relative tangential velocity for granular wall particle interactions.
Thanks to Andrew Santos for providing a test case that reveals this.
2019-04-16 16:59:21 -06:00
1d4372c24d Fixes bug in calculation of relative tangential velocity for granular wall particle interactions 2019-04-16 16:40:41 -06:00
0b24a3d830 Added a 'mass_velocity' damping option to the new granular pair styles and granular wall interaction.
This is to more closely match the old style pair gran/hooke/* damping behavior.
Updated doc page accordingly, as well as adding some examples on how to match old pair gran/* styles.
2019-04-15 16:14:02 -06:00
2e9404acdf Fix typo [skip ci] 2019-04-15 16:06:36 +09:00
d0826f2838 Added granular example input scripts 2019-04-13 23:52:30 -06:00
d33a30806a Minor code clean up in pair_granular.cpp 2019-04-13 23:37:46 -06:00
14d3d09de3 Fixed several errors in granular doc pages, particularly coefficients in examples 2019-04-13 23:36:40 -06:00
5e3929de56 Commit2 JT 041019
- correct spelling in Howto_spin.txt
2019-04-10 13:35:58 -06:00
70c816aa02 Commit JT 041019
- corrected setforce/spin
- added an example
- added the documentation (in setforce)
- updated the Howto_spin documentation
2019-04-10 13:18:33 -06:00
3d7b387786 Commit JT 040919
- first working version of setforce
- modified fix nve/spin to account for it
2019-04-09 16:57:27 -06:00
4af22a723d Fixes several bugs in fix wall/gran, wall/gran/region:
1. Radius of curvature for curved regions was incorrectly used to compute wall-particle overlaps
2. Uninitialized values of rolling and twisting history could produce crashes in
cases that don't initialize these to 0 by default. These are now initialized to 0.
3. Fixed a bug with the use of 'NULL' for specification of the tangential stiffness for
wall/gran and wall/gran/region
2019-04-09 16:40:49 -06:00
915c3a6001 step version number for next patch release 2019-04-09 03:06:04 -04:00
8ec231a8e5 Commit JT 040819
- corrected bug in fix nve/spin (init tables with grow)
- start work for fix setforce/spin
2019-04-08 16:54:25 -06:00
b8ae466999 Commit4 JT 040819
- added unknown names/acronyms in doc/utils/sphinx-config/false_positives.txt
2019-04-08 14:00:49 -06:00
814b9b9378 Merge branch 'clean-master2' of github.com:julient31/lammps into gneb_spin 2019-04-08 11:26:48 -06:00
1501e9ba8a Commit3 JT 040819
- README and interpolate.c for in examples/SPIN/gneb/interpolate/
2019-04-08 11:22:02 -06:00
57247142d2 Commit2 JT 040819
- finished doc (compiled and spell check)
- compiled with -Wall -Wextra, unused var. removed
2019-04-08 11:08:06 -06:00
1e07ef6f87 Added example for pouring of particles on flat wall with new granular pair style 2019-04-08 09:13:22 -06:00
898860328b Merge pull request #1416 from akohlmey/collected-small-changes
More collected small changes and bug fixes for next patch release
2019-04-08 10:42:10 -04:00
fcb4b75589 Commit JT 040819
- improved documentation neb/spin
2019-04-08 07:24:18 -06:00
cb559659f8 write a full-fledged LAMMPS manpage. 2019-04-07 10:35:00 -04:00
5c5b57be5a minor tweaks 2019-04-07 10:34:25 -04:00
8c4a497af4 set default to automatically download scafacos lib if not found 2019-04-07 06:10:39 -04:00
e57c4c60bd fix spelling issue 2019-04-07 05:59:28 -04:00
13cf357f66 document in README, that msi2lmp is now build alongside LAMMPS 2019-04-07 00:47:10 -04:00
6f7b3643ef document clang/clang++ preset with settings for MPI and OpenMP 2019-04-07 00:46:43 -04:00
e57e4a730b more packages with default-to-download-if-lib-not-found 2019-04-07 00:45:57 -04:00
b40c4d1641 update version number and some reformatting of the LAMMPS manpage 2019-04-06 23:45:01 -04:00
1dd21e6e0c make downloaded LATTE library use the same BLAS/LAPACK as LAMMPS 2019-04-06 23:44:27 -04:00
a6c9a782a4 add manpage for msi2lmp 2019-04-06 23:41:48 -04:00
3b43fc3ea7 install msi2lmp force field files and set environment variable, so they can be found automatically 2019-04-06 20:41:00 -04:00
0d8d8dc0da Merge branch 'master' into collected-small-changes 2019-04-06 19:52:39 -04:00
ce1040a103 Merge pull request #1414 from oywg11/github-tutorial-update
fix two bugs in potential #839
2019-04-06 19:44:11 -04:00
b25657c67b trigger download by default if not found for LATTE package/library 2019-04-06 17:49:56 -04:00
494e76da7d add false positive 2019-04-06 17:29:04 -04:00
cb398bd026 silence some more compiler warnings 2019-04-06 17:23:37 -04:00
72b69783de add download-default-if-not-found logic to voro++ library for VORONOI package 2019-04-06 17:17:17 -04:00
8c02ce7302 silence some compiler warnings 2019-04-06 17:03:40 -04:00
f98aed419c document the 'maxelt' define in pair style meam/c and how to change it 2019-04-06 17:03:24 -04:00
86f4080b71 some dead code removal in pair style kim. 2019-04-06 16:48:29 -04:00
59a4d42231 make default CMake setting for DOWNLOAD_KIM depend on whether the KIM API is found or not 2019-04-06 16:47:48 -04:00
e8289b0024 Merge branch 'find-kim-fix' of https://github.com/ellio167/lammps into collected-small-changes 2019-04-06 16:28:48 -04:00
3070a11041 guard against extracting too many elements from the MEAM library into the statically sized arrays
this will abort with a meaningful error message and people can fix up their LAMMPS binary as needed.
2019-04-06 16:23:10 -04:00
47b7437976 Have FindKIM-API.cmake work in QUIET mode 2019-04-06 15:08:15 -05:00
6643a4ec92 Fixup FindKIM-API.cmake and clean up some v2 remnants 2019-04-06 14:20:21 -05:00
cb27d03c79 stop with error message when computing per-atom stress for reax/c/omp 2019-04-06 11:27:04 -04:00
8683e1ebf8 revert ineffective changes 2019-04-06 11:24:59 -04:00
d6a12f6c3e roll back ineffective changes and add zeroing of allocated storage 2019-04-06 11:22:22 -04:00
efa8c8d58b sanitize file pointer access handling 2019-04-06 11:21:43 -04:00
bcb6e1be4f disable fdotr for virial also for regular pair style reax/c 2019-04-06 09:45:19 -04:00
bca7364ba3 disallow using fdotr for computing virial contributions with reax/c/omp 2019-04-06 09:21:50 -04:00
9334c72c04 clang can be installed supporting OpenMP without having omp.h installed: add check 2019-04-06 08:59:06 -04:00
e629733d0b change error-all to error-one 2019-04-06 10:26:56 +03:00
f10534a721 add code to build msi2lmp with CMake 2019-04-05 23:56:23 -04:00
de0938da39 avoid segfault when catching command line flag errors with EXCEPTIONS enabled 2019-04-05 23:24:43 -04:00
f8018a8bba Commit2 JT 040519
- added angle in doc
- improved doc neb/spin
2019-04-05 16:44:23 -06:00
3d7a4fb945 silence compiler warnings, remove dead code 2019-04-05 17:04:07 -04:00
d17553d8d2 add preset to make it easier to use clang with OpenMP and MPI 2019-04-05 16:52:28 -04:00
e56d69a267 silence compiler warnings 2019-04-05 16:52:03 -04:00
67f8c83661 Merge pull request #1415 from stanmoore1/kk_nh
Fix bug in fix_nh_kokkos
2019-04-05 16:50:08 -04:00
542d8aaf07 Fix bug in fix_nh_kokkos 2019-04-05 14:16:25 -06:00
6e6d350572 correct the spelling 2019-04-05 23:01:28 +03:00
4f459a59a1 correct the spelling 2019-04-05 22:55:40 +03:00
ac7312caf1 Merge pull request #1409 from akohlmey/collected-small-changes
Collected small changes and bugfixes for the next patch release
2019-04-05 15:39:16 -04:00
ed90596849 Merge pull request #1399 from rtoijala/fix-elstop
Add fix electron/stopping to USER-MISC
2019-04-05 15:34:41 -04:00
7f040a3676 Merge pull request #1404 from akohlmey/compute-local-bugfix
Fix bug reported in Issue #1401
2019-04-05 15:34:10 -04:00
da16a7e50b Commit JT 040519
- initial rotation with Rodrigues' formula + exception
- worked on neb_spin documentation
- removed pair/spin warning for neb/spin
2019-04-05 13:22:46 -06:00
815ad4dab2 fix a bug in ILP 2019-04-05 22:04:45 +03:00
05993a79b8 Merge branch 'pair_kim_fix' of https://github.com/ellio167/lammps into collected-small-changes 2019-04-05 11:39:19 -04:00
175f3ee648 Fix pointer assignment in pair_kim
Bug only affects cases where neighbor list needs to be stripped.
Thanks to Mingjian Wen (@mjwen) for finding and reporting this.
2019-04-05 10:14:45 -05:00
2e1da2958d resolve toctree and paper anchor issues 2019-04-05 11:04:11 -04:00
2757e4e6e6 two more false positives 2019-04-05 10:53:41 -04:00
85a0461a48 reword and reformat text in Howto_bioFF.txt a little bit. add warnings about msi2lmp's age and lack of maintenance 2019-04-05 10:53:23 -04:00
20cbe1edff Merge branch 'patch-1' of https://github.com/evoyiatzis/lammps into collected-small-changes 2019-04-05 10:36:53 -04:00
cb272159ba Merge branch 'master' of github.com:lammps/lammps into gran_mods 2019-04-05 07:53:51 -06:00
73b2e1f47c Merge conflict in doc page (newline issue) 2019-04-05 07:53:32 -06:00
5d3801cb12 Include info for COMPASS in the Howto section 2019-04-05 15:50:58 +02:00
383e206cc2 the GCC folks did it again. :-( 2019-04-05 08:00:04 -04:00
8b2a8ad08b fix stupid typo 2019-04-05 06:32:59 -04:00
42e8a7613e stop with error or print a warning when the system or atom ids get to large for reax/c pair styles 2019-04-05 06:29:38 -04:00
4f026b9b38 remove trailing whitespace 2019-04-05 06:14:10 -04:00
76dfcc1dfd Merge branch 'mc-bigbig-fix' of https://github.com/rtoijala/lammps into collected-small-changes 2019-04-05 06:07:54 -04:00
9543335613 Merge branch 'master' into collected-small-changes 2019-04-05 06:05:22 -04:00
f4159ff592 implement different -DLAMMPS_BIGBIG workaround without breaking format 2019-04-05 05:53:19 -04:00
e359e80118 fix bug reported in issue #1410 2019-04-04 22:39:58 -04:00
dbbf198edb more accurate matching of styles using utils::strmatch() 2019-04-04 17:10:27 -04:00
df94e80bb1 silence compiler warnings 2019-04-04 16:52:08 -04:00
4003387fb1 dead code removal 2019-04-04 16:51:59 -04:00
ab5c3b0386 protect against possible buffer overflow 2019-04-04 16:51:37 -04:00
78bab6ee39 make format macros in USER-REAXC compatible with -DLAMMPS_BIGBIG 2019-04-04 16:36:57 -04:00
c52a330a79 update USER-PLUMED support for version 2.5.1 and fix bug in Install.py script 2019-04-04 14:19:53 -04:00
265ad4512d add sanity check on plumed pre-installed path location 2019-04-04 13:18:27 -04:00
605524ab66 Merge pull request #1406 from akohlmey/fix-some-64-bit-integer-issues
Fix some 64 bit integer issues
2019-04-04 12:47:34 -04:00
968ac3d8d7 Merge pull request #1367 from mkanski/reax_better_errors
Removing calls to MPI_Abort from reax/c + a fix for a memory leak
2019-04-04 12:47:02 -04:00
81dd96f970 print more meaningful error message when trying to access individual data from a local array produced by a compute */local 2019-04-04 12:42:54 -04:00
50427ce05d flag intended fallthrough cases for GNU compilers 2019-04-04 09:38:53 -04:00
a9c376f20d use tagint instead of int when communicating atom ids 2019-04-04 09:38:28 -04:00
88d160f86e avoid segfault in Special::angle_trim() if only angles or only dihedrals are defined 2019-04-04 09:13:18 -04:00
8c03f51020 fix 32-bit/64-bit overflow issue in expression 2019-04-04 09:01:39 -04:00
2aa7a150b4 USER-SMD: Use TAGINT_FORMAT where appropriate 2019-04-04 15:53:00 +03:00
6679469220 USER-MANIFOLD: Use TAGINT_FORMAT where appropriate 2019-04-04 15:52:57 +03:00
da77dde04d MC/fix_bond_break: Use TAGINT_FORMAT where appropriate 2019-04-04 14:51:40 +03:00
6ff1fee6d6 more simplifications 2019-04-04 09:54:39 +02:00
619c2322e5 Merge remote-tracking branch 'upstream/master' into fix-elstop 2019-04-04 10:03:36 +03:00
0d78c7b43d fix elstop: Rename to fix electron/stopping 2019-04-04 09:57:15 +03:00
8820467a8b fix wrong column size assignment bug when using optional arguments in some local computes 2019-04-03 15:15:40 -04:00
d4a495151e Simplify access to error in reax/c/omp 2019-04-03 19:40:40 +02:00
e45e92b1cb Commit JT 040319
- improved examples
- start rework gneb init. (Rodrigues' formula)
2019-04-03 11:24:37 -06:00
501558743b Merge with current master 2019-04-03 19:17:15 +02:00
d7a5bf4e16 Repair last commit 2019-04-03 18:52:14 +02:00
1a105253c1 Check the MPI rank differently 2019-04-03 18:24:38 +02:00
f2f49e60bf Make some errors more elaborate + change some error->all to error->one 2019-04-03 18:12:12 +02:00
f73ccc3025 Merge pull request #1402 from akohlmey/collected-small-changes
Collected changes for improving CI testing, CMake, and coding convention compliance
2019-04-03 10:51:40 -04:00
1696432e82 resolve conflict between src/STUBS/mpi.h and lib/message/cslib/src/STUBS_MPI/mpi.h 2019-04-03 01:00:53 -04:00
7372e8fde1 must add STUBS_MPI to cslib includes when compiling without MPI 2019-04-03 00:41:03 -04:00
f17aff6331 add some missing entries to src/USER-MISC/README 2019-04-03 00:24:36 -04:00
537704fdaa eliminate the use of the "using" keyword in headers of the KOKKOS package 2019-04-03 00:13:52 -04:00
52a13f31b3 remove "using namespace" from header 2019-04-03 00:04:12 -04:00
f02b364e6e remove "using namespace" from header and include required header 2019-04-03 00:03:34 -04:00
40f1662c93 reduce compiler warnings 2019-04-02 23:44:00 -04:00
6cb120d691 get rid of "using" in USER-REAXC header 2019-04-02 23:20:53 -04:00
a149fdb420 forgot MESSAGE package in all_on/off.cmake preset 2019-04-02 23:19:37 -04:00
b1070f4703 must add USER-SCAFACOS to nolib.cmake preset, as it requires GSL 2019-04-02 23:10:59 -04:00
778537e734 update micelle example for improved reproducibility 2019-04-02 22:32:15 -04:00
921d3dadf8 Merge pull request #1400 from akohlmey/collected-small-changes
Refactor USER-INTEL support in CMake and support Linux-2-Windows cross-compiling with CMake
2019-04-02 17:48:21 -04:00
bd923d8bd4 fix second typo in the same word. i need a break... :-( 2019-04-02 17:33:35 -04:00
6411ff8359 transfer MPI/OpenMP selection from LAMMPS to downloaded Plumed library configuration 2019-04-02 17:25:26 -04:00
4a003644fe fix typo 2019-04-02 16:41:02 -04:00
365166fef0 print warning messages about calls to self only once 2019-04-02 16:01:42 -04:00
34b023456b add message about -DLAMMPS_BIGBIG incompatibility of scatter/gather functions 2019-04-02 15:28:48 -04:00
978b52ee8c add warning/status messages about skipping TBB malloc and MKL RNG 2019-04-02 15:06:56 -04:00
98bd720c68 improved formatting of cmake settings and presets related docs 2019-04-02 14:56:51 -04:00
4824992a1e update documentation for recent changes to CMake presets 2019-04-02 14:31:13 -04:00
5a75125426 add some popular packages requiring libraries to most.cmake preset 2019-04-02 14:30:34 -04:00
cb5c3f900e add minimal.cmake and most.cmake presets 2019-04-02 12:41:12 -04:00
74ce164457 restore lost edit to all_on.cmake and all_off.cmake that syncs the list of packages 2019-04-02 12:06:51 -04:00
3eab343821 give access to LAMMPS object and wrap in macros for optional exception handling 2019-04-02 11:49:08 -04:00
fd7c680654 the lammps_gather_atom*() and lammps_scatter_atom() library functions are not compatible with -DLAMMPS_BIGBIG. divert to dummy functions resulting in error exists. 2019-04-02 11:39:46 -04:00
764fb2522b abort already in cmake when including USER-INTEL with -DLAMMPS_BIGBIG 2019-04-02 11:21:25 -04:00
ef184c9b1b remove presets, that try to mimic settings from the conventional build, but make little sense with cmake 2019-04-02 09:34:03 -04:00
0ab65c0343 update docs for building LAMMPS for windows 2019-04-02 07:12:55 -04:00
800f3a81b1 update documentation for changes in USER-INTEL support in CMake 2019-04-02 06:59:19 -04:00
91f3a94851 fix typo in docs 2019-04-02 05:49:25 -04:00
d1cb8970d5 fix elstop: Remove unused includes 2019-04-02 09:29:27 +03:00
d3ea115436 Tweaks to doc page 2019-04-01 22:13:49 -06:00
c044eeb482 update nolib.cmake and change it so it disables all packages requiring some external library or equivalent 2019-04-01 22:23:36 -04:00
2fc7395c14 add some comments to updated all-on / all-off presets 2019-04-01 22:22:31 -04:00
719a74a02f must include omp.h header when using OpenMP API functions 2019-04-01 22:10:55 -04:00
b1badb6555 update all-on and all-off presets for recently added and removed packages 2019-04-01 22:09:58 -04:00
0b8332cedf Commit2 JT 040119
- improved verbose output
- work on examples
2019-04-01 17:52:59 -06:00
200aa2d06f missed a few packages in cross-compiler preset 2019-04-01 18:50:53 -04:00
3a0b108f91 reformat 2019-04-01 18:22:06 -04:00
677974573a Merge branch 'clean-master2' of github.com:julient31/lammps into gneb_spin 2019-04-01 16:12:11 -06:00
76b848bb0a include USER-INTEL, but need to disable support for LRT mode 2019-04-01 17:58:19 -04:00
a0e5d14990 Commit JT 040119
- corrected tangent vector projection
- output verbose (Gradidottan)
2019-04-01 15:53:36 -06:00
35129c0881 posix_memalign() does not exist on windows, so we have to workaround using it with USER-INTEL 2019-04-01 17:51:53 -04:00
70ae5f41e3 tweaks for compiling USER-INTEL in cpu mode on Windows with GCC 2019-04-01 17:46:25 -04:00
a7bb772db7 Merge branch 'refactor-user-intel-cmake' into collected-small-changes 2019-04-01 17:39:43 -04:00
8d8f0af7a6 add download flags to mingw preset 2019-04-01 17:38:53 -04:00
d5aa60dbfe skip inline function optimizations for windows when compiling with mingw 2019-04-01 17:23:27 -04:00
b7aecc0d59 avoid linking with -ldl on windows, as it is not needed or supported 2019-04-01 17:22:53 -04:00
799c16a8b2 restore a removed check + print some warnings only once 2019-04-01 17:04:09 +02:00
adbc64b45e Cleaning includes + changing error->all to error->one 2019-04-01 16:34:34 +02:00
2e7316a9e3 fix another windows portability issue in USER-PTM by adding missing header include 2019-04-01 08:11:22 -04:00
a8e5af3cb4 fix elstop: Inline kinetic energy computation 2019-04-01 12:59:25 +03:00
053bdea234 fix elstop: Use inline LaTeX for equation 2019-04-01 12:27:50 +03:00
7688ead60f add pair style granular to pair style overview page in manual 2019-04-01 04:42:56 -04:00
61d4b7a47f Add Kai as spelling false positive 2019-04-01 09:14:47 +03:00
3bf4cd9c01 major refactor of USER-INTEL support in CMake
- decouple from USER-OMP
- decouple from OpenMP support
- make MKL and TBB optional
- support compilers other than Intel (but print warning about bad performance)
- expose Long-range thread support selection to CMake
- fix bugs and typos and add missing code, so that it actually compiles and includes all styles
2019-03-31 17:17:07 -04:00
4d3c1785c6 add utility function to add custom integrate style 2019-03-31 17:12:11 -04:00
fa407c05a1 neither KOKKOS nor USER-INTEL require OpenMP; they can be built without 2019-03-31 15:00:53 -04:00
971bce7428 address formatting issue in pair granular docs 2019-03-30 23:33:54 -04:00
5065350081 improve kim-query documentation 2019-03-30 23:19:31 -04:00
74489621c4 correct misleading indentation to follow syntax 2019-03-30 22:35:41 -04:00
585403d650 Merge pull request #1397 from ellio167/kim-api-fix-1396
Rename FindKIM-API.cmake.in to FindKIM-API.cmake
2019-03-30 22:00:17 -04:00
a28ae7c2c0 Rename FindKIM-API.cmake.in to FindKIM-API.cmake
Fixes: #1396
2019-03-30 13:56:02 -05:00
560ccb2719 Merge pull request #1387 from akohlmey/next-patch-release
Step version string for next patch release
2019-03-29 14:25:45 -04:00
dd22b80a9d Merge pull request #1393 from akohlmey/collected-small-changes
Collected small changes
2019-03-29 13:57:07 -04:00
ff7f129a5d remove trailing whitespace 2019-03-29 11:37:26 -04:00
17cd650622 Merge branch 'master' into collected-small-changes 2019-03-29 11:35:15 -04:00
4eafb624b7 Merge pull request #1392 from ellio167/kim-2.0.2
Updates for kim-api-2.0.2 release
2019-03-29 11:31:00 -04:00
677753731f Merge pull request #1395 from vishalkenchan/fix_unset_variable
Set Coulomb summation cutoff radii when it is explicitly specified
2019-03-29 10:37:29 -04:00
30929d95e2 Merge pull request #1342 from dsbolin/gran_mods
New generalized granular pair style added
2019-03-29 10:37:07 -04:00
75382cf265 update documentation tweaks to run cleanly 2019-03-29 10:34:34 -04:00
ff819be807 more 'war on tabs' 2019-03-29 10:21:44 -04:00
13255d6338 step version to 29 March 2019 2019-03-29 09:20:33 -04:00
6a60dad2c3 Set Coulomb summation cutoff radii in the case it is explicitly specified. 2019-03-29 10:02:15 +01:00
1bf5047c7a document new CUDA_MPS_SUPPORT option in CMake 2019-03-28 18:03:54 -04:00
747ddf2642 expose -DCUDA_PROXY define to CMake so that the GPU package can be used with nvidia MPS proxy server 2019-03-28 17:15:05 -04:00
9d0e518cc5 Updates for kim-api-2.0.2 release 2019-03-28 15:35:22 -05:00
088a672196 replace (evil) tabs with (nice) spaces 2019-03-28 16:20:57 -04:00
30bca9f91e force loading of Sphinx version 1.7.6 instead of 2.0.0 or later, so the spellchecker keeps working 2019-03-28 16:20:19 -04:00
93f531441a Merge pull request #1388 from lammps/tiled-bug
bug fix for tiled communication at cutoffs near box size
2019-03-28 13:45:41 -04:00
d71d12d2de Merge pull request #1391 from akohlmey/more-small-changes
Error out when per-atom stress is requested for USER-INTEL styles
2019-03-28 13:45:10 -04:00
74bfd78b06 Merge pull request #1390 from ckadding/master
Fix typos in argument checking for  compute pressure/cylinder
2019-03-28 13:44:53 -04:00
4aff7191e7 small whitespace cleanup 2019-03-28 13:02:14 -04:00
eab939af23 add a note about the lack of stress/atom in USER-INTEL to the manual 2019-03-28 12:47:06 -04:00
16f66dc561 error out when per-atom stress is requested for bonded interactions with USER-INTEL 2019-03-28 12:38:41 -04:00
61483da58b error out when per-atom stress is requested 2019-03-28 12:25:40 -04:00
ab12a7c95b use consistent constants from math_const.h and fast integer powers from math_special 2019-03-28 11:58:04 -04:00
196b8c6eab Fix typos in error checking 2019-03-28 11:53:32 -04:00
b9bddd7ba6 use ev_init() and add some more cosmetic changes to pair granular 2019-03-28 11:47:41 -04:00
2fa6e913ef Merge branch 'master' into gran_mods 2019-03-28 11:46:44 -04:00
3cc740b9d3 handle granular specific pair style flags consistently and make sure they are never accessed uninitialized 2019-03-28 11:46:04 -04:00
03ee03c043 remove set but unused flag 2019-03-28 11:44:50 -04:00
5d7c52e114 clean up whitespace issues caused by commit 5210c4c3a4 2019-03-28 11:23:37 -04:00
5210c4c3a4 cosmetic reformatting of new GRANULAR files 2019-03-27 16:58:14 -06:00
6b09f6d490 bug fix for tiled communication at cutoffs near box size 2019-03-27 15:51:10 -06:00
28a6dcd1c3 Merge pull request #1384 from lammps/rendezvous2
second attempt at adding rendezvous protocol for some to some communication.
2019-03-27 17:44:16 -04:00
2ad9355140 Merge pull request #1383 from akohlmey/final-changes-for-patch
Several small changes and tweaks for patch release
2019-03-27 17:00:56 -04:00
44fe8330b9 Commit JT 032719
- commit before wok output
2019-03-27 14:59:12 -06:00
e63d2cee87 Merge pull request #1375 from akohlmey/install-python-for-cmake
Refactor python module installer and add install-python target to CMake
2019-03-27 16:47:25 -04:00
b685a0a7b8 need to use fabs() when computing deltas when checking image flags for consistency 2019-03-27 15:47:14 -04:00
c4fd658e9d rename micelle-rigid to micelle.rigid 2019-03-27 11:07:14 -04:00
8a384df5c3 use utils::strmatch() instead of strncmp() 2019-03-27 06:19:42 -04:00
8ba1d76055 some dead code removal and more whitespace cleanup 2019-03-27 05:38:41 -04:00
af8f06141f Step version string for next patch release 2019-03-26 23:02:07 -04:00
03e86c4d17 update python module installation instructions 2019-03-26 22:49:21 -04:00
9d22f82ba7 update PyLAMMPS documentation/tutorial for CMake and the refactored installation process 2019-03-26 22:42:09 -04:00
3867972ae8 make PYTHON_INSTDIR a cached variable and implement changes suggested by @junghans 2019-03-26 22:08:53 -04:00
77e323d28c prefix option in install.py not needed 2019-03-26 21:55:07 -04:00
1926c95625 correct micelle data file without overwriting the molecule ids 2019-03-26 19:08:58 -04:00
b6b0d0b30e minor whitespace cleanup commit to retrigger PR tests on github 2019-03-26 16:43:09 -04:00
dbd458e9e3 update micelle example with corrected data file and rigid body input 2019-03-26 16:35:35 -04:00
5a6a8a9e57 Merge pull request #1379 from lammps/hyper
Hyper-dynamics update
2019-03-26 16:30:37 -04:00
07a6749ddc install LAMMPS python module with either install-python or install target if prerequisites are given 2019-03-26 16:00:48 -04:00
3cabfd13cd Commit JT 032619
- finish merge of min_spin.cpp
- test output
2019-03-26 12:51:51 -06:00
26b90727b3 whitespace cleanup 2019-03-26 13:26:09 -04:00
cf349633f7 cosmetic changes 2019-03-26 13:09:49 -04:00
b8747ce8fb Merge branch 'clean-master2' of github.com:julient31/lammps into gneb_spin
Conflicts:
	doc/src/min_modify.txt
	doc/src/min_spin.txt
	examples/SPIN/spinmin/in.spinmin.bfo
	examples/SPIN/spinmin/in.spinmin.iron
	src/SPIN/fix_precession_spin.cpp
	src/SPIN/min_spin.cpp
	src/SPIN/min_spin.h
	src/SPIN/pair_spin_dmi.cpp
	src/SPIN/pair_spin_exchange.cpp
2019-03-26 10:59:21 -06:00
efad31f474 bug fixes to added rendezvous algorithms 2019-03-26 10:09:16 -06:00
e2e4fe2cf7 Merge pull request #1380 from julient31/minimizer_spin
Add a spin minimizer in the SPIN package
2019-03-26 11:52:21 -04:00
89bc79f657 Merge pull request #1382 from lammps/revert-1238-rendezvous
Revert "Rendezvous"
2019-03-26 11:51:27 -04:00
fff28a8666 remove trailing whitespace 2019-03-26 11:17:21 -04:00
1266b866e0 add some degree of endian detection to hashlittle.cpp 2019-03-26 11:01:39 -04:00
1ca0c78a2e turn off diagnostic output for rendezvous op 2019-03-26 11:01:39 -04:00
0bf6b91576 bug fix for new fix shake redezvous comm 2019-03-26 11:01:39 -04:00
62045a9c52 cleanup up rendezvous diagnostic output 2019-03-26 11:01:38 -04:00
bbe6c9bb63 added diagnostic info for memory and balance info 2019-03-26 11:01:38 -04:00
fc002e30d3 added rendezvous via all2all 2019-03-26 11:01:38 -04:00
981f12ebeb fix a small memory leak in SHAKE setup 2019-03-26 11:01:38 -04:00
b370a61b60 added rendezvous alg to fix shake 2019-03-26 11:01:38 -04:00
a3a16acead propagate rendezvous changes to fix rigid/small 2019-03-26 11:01:38 -04:00
17817fc290 less comm version of special bonds rendezvous 2019-03-26 11:01:38 -04:00
3f9d59294e replace STL map with atom->map in special, better code comments 2019-03-26 11:01:37 -04:00
9912c44413 rendevous comm option for special bonds and fix rigid/small 2019-03-26 11:01:33 -04:00
676370ade7 Commit JT 032619
- added citeme in neb/spin
- started work on distance output
2019-03-26 07:21:16 -06:00
8c99752cec Add fix elstop to USER-MISC
Implements inelastic energy loss for fast particles in solids.
2019-03-26 10:08:20 +02:00
d7a2949d1a Revert "Rendezvous" 2019-03-25 21:30:48 -04:00
6e7f13e6f9 Merge branch 'kim_query' of https://github.com/ellio167/lammps into final-changes-for-patch 2019-03-25 21:19:23 -04:00
4e74ccbbbe restore building developer pdf before manual pdf 2019-03-25 21:18:17 -04:00
b0a07f189c must use top-level dir to get the correct modified status 2019-03-25 21:18:17 -04:00
19d25203ad add min_style spin to commands overview 2019-03-25 21:05:13 -04:00
82d646cede print warning about missing fix nve/spin only on MPI rank 0 2019-03-25 20:59:22 -04:00
7b3f952990 whitespace cleanup and dead code removal 2019-03-25 20:50:39 -04:00
36b645d238 add min_spin page to toclist 2019-03-25 20:46:42 -04:00
b8c4e09b27 Put #ifdef around #include "curl/curl.h" in kim_query.cpp 2019-03-25 19:14:08 -05:00
81a4d293db Commit4 JT 032519
- corrected documentation (errors in min_spin.txt and
min_modify.txt)
- changed the code accordingly
2019-03-25 15:43:58 -06:00
cb92bccdff Merge pull request #1238 from lammps/rendezvous
Implement rendezvous protocol for more efficient communication setup for large number of MPI ranks
2019-03-25 17:20:00 -04:00
0edb82eb5e update format 2019-03-25 17:14:58 -04:00
b0a741fc58 add support for --prefix to python module installer 2019-03-25 16:51:35 -04:00
30be5e94d9 Commit3 JT 032519
- updated the README file
- updated examples/SPIN/spinmin/
2019-03-25 14:22:16 -06:00
7a00997a14 Commit2 JT 032519
- added equations for documentation
- updated examples (not calling fix nve/spin)
- replaced error message by warning in all pair/spin
2019-03-25 14:03:28 -06:00
a726362888 Commit JT 032519
- adding all min files into new branch
- preparing branch for pull request of spin minimizer
2019-03-25 12:57:42 -06:00
3e8c1c801b add some degree of endian detection to hashlittle.cpp 2019-03-25 14:03:29 -04:00
2f20581b29 Merge pull request #1374 from akohlmey/collected-small-fixes
Collected small changes for the next patch release
2019-03-25 13:15:45 -04:00
5d54e888d5 Merge pull request #1371 from akohlmey/add-kim-query
Add kim_query command to KIM package
2019-03-25 13:15:20 -04:00
1bd47f0318 Merge pull request #1365 from martok/meamc-evclear
Consolidate clearing of eflags and vflags
2019-03-25 13:14:59 -04:00
b055837f49 Merge pull request #1372 from julient31/minprec_spin
Add min_post_force in fix_precession_spin
2019-03-25 13:14:46 -04:00
34d1ed9b54 Merge pull request #1376 from junghans/cmake_gitversion
cmake: move lmpgitversion generation to build phase
2019-03-25 13:14:30 -04:00
eedc88eb9b MPI_Abort removed from reax/c/kk + fixed some declarations 2019-03-25 18:01:31 +01:00
88755aefca Added support for reax/c/omp 2019-03-25 17:44:52 +01:00
ab748ffe48 turn off diagnostic output for rendezvous op 2019-03-25 10:29:06 -06:00
a20d58312d add missing convesion to fractional coordinates and back for enforced PBC dumps of triclinic cells 2019-03-25 12:25:50 -04:00
e04ab51970 bug fix for new fix shake redezvous comm 2019-03-25 10:20:32 -06:00
5554deda39 fixed 2 spelling errors 2019-03-25 10:07:07 -06:00
de99dc8974 new output files 2019-03-25 09:54:28 -06:00
e9384b6b17 updating output files 2019-03-25 09:52:16 -06:00
a89a2de9d4 Removed unnecessary MPI_comm 2019-03-25 16:45:59 +01:00
b2a7205abe re-order ev_init() and ev_setup() so that 'init' comes before 'setup' as requested by @sjplimp 2019-03-25 11:31:23 -04:00
881cc71a44 Merge branch 'master' into hyper 2019-03-25 09:21:09 -06:00
83e458af0b Cleaning changes 2 2019-03-25 15:22:20 +01:00
99acb4ac54 Cleaning changes 1 2019-03-25 15:00:52 +01:00
f557b12e03 Merge branch 'clean-master2' of github.com:julient31/lammps into gneb_spin 2019-03-25 07:34:38 -06:00
111ff4475e Pointer moved to reax lists 2019-03-25 14:18:55 +01:00
414f9b25d1 cmake: move lmpgitversion generation to build phase 2019-03-23 08:01:41 -06:00
d5074b39a0 Merge pull request #57 from ellio167/add-kim-query
Update kim example query and log files
2019-03-22 21:42:06 -04:00
3464464ea9 Update kim example query and log files 2019-03-22 20:20:47 -05:00
22be3bd37e fix spelling error and add false positives for spellchecking 2019-03-22 17:33:16 -04:00
f69173f410 partial documentation update 2019-03-22 17:25:03 -04:00
52f9e4a960 allow overriding the location of the molfile plugin headers with CMake 2019-03-22 14:11:02 -04:00
c23ace9c97 Commit JT 032219
- fixed bug 1: precession_spin had no min_setup
- fixed bug 2: incorrect init of spins in neb/spin
- improved doc min_spin.txt (added eqs, and connected to related
files).
2019-03-22 11:52:09 -06:00
e50c269a6b add install-python target with suitable error message also when not building a shared library 2019-03-22 12:51:57 -04:00
04f999fdd6 add install-python target to CMake build system. decouple python module install from python package 2019-03-22 12:35:21 -04:00
817a851a30 adapt master makefile to refactored python module installer script 2019-03-22 12:01:59 -04:00
0f030acc59 refactoring python module installer script to be (more) platform neutral and compatible with conventional make and CMake builds 2019-03-22 11:59:15 -04:00
cd6b23d104 explicitly request OpenCL version 1.2 compatibility when compiling GPU package kernels for OpenCL 2019-03-22 09:50:31 -04:00
75d63df4e0 fix small memory leak in pair style hybrid when reading restarts 2019-03-22 05:41:32 -04:00
8916aeb36d update for README to USER-SMTBQ with up-to-date maintainer e-mails 2019-03-22 05:25:14 -04:00
b975d59d9f make use of copymode flag in pair style destructors consistent 2019-03-22 05:15:02 -04:00
8f90d6c6d0 must bracket 'memory->destroy()' calls in destructor with 'if (allocated)' 2019-03-22 04:55:13 -04:00
1e8ccb1774 initialize setflag and cutsq pointers to NULL, so they are not accessed uninitialized by accident 2019-03-22 04:54:06 -04:00
76b9c0049d Merge pull request #1359 from martok/dynamical-matrix
Updates and bugfixes to the dynamical_matrix command
2019-03-20 21:34:34 -04:00
2cbf56846a Commit JT 032019
- moved gneb files from src/REPLICA to src/SPIN
- changed name of min/spin
- implemented read_param in min.cpp and min_spin.cpp
- set sp_flag tests in min_spin.cpp and neb_spin.cpp
2019-03-20 10:41:36 -06:00
86810c2d7c Commit2 JT 031919
- correct error in fix_precession_spin
- only the sign of the force needed a correction
2019-03-19 22:44:26 -06:00
a508f1de6c Commit JT 031919
- correct. error in fix_prec_spin
- added min_post_force in fix_prec_spin
2019-03-19 22:30:44 -06:00
2dbc2c5916 fix spelling issues in documentation and some minor clarification 2019-03-19 16:04:53 -04:00
1c3e3ce548 add kim_query command to commands list 2019-03-19 15:57:19 -04:00
fed48427be update lib/kim/Install.py to support md5 checksum. update CMake support as needed 2019-03-19 15:48:03 -04:00
38c373a0e4 integrate new kim_query command into the documentation environment 2019-03-19 15:42:35 -04:00
741a7fe630 final touches to support compiling with libcurl transparently 2019-03-19 15:40:49 -04:00
7a8bb5baaf come code cleanup and refactoring 2019-03-19 15:33:53 -04:00
02b800a3bb add template for new kim_query command 2019-03-19 15:33:48 -04:00
a626efbca0 Merge pull request #1370 from akohlmey/write-data-for-dihedrals-fixes
Enable write_data for more dihedral styles and related corrections
2019-03-19 13:55:15 -04:00
487671c46b enable write_data functionality for more dihedral styles 2019-03-19 12:10:30 -04:00
e87e215bcc enable and correct write_data output for dihedral style spherical 2019-03-19 12:02:25 -04:00
c0c61268ee store only dihedral style info in restart, no coeffs 2019-03-19 11:56:23 -04:00
cf8bee9b46 remove unused and redundant data elements. no write_data support for tables. 2019-03-19 11:43:29 -04:00
0d4dbb8d73 Merge branch 'clean-master2' of github.com:julient31/lammps into gneb_spin 2019-03-19 09:01:27 -06:00
194e11c329 Commit JT 031919
- bug with sk sim
- commit/push before pull up-to-date SPIN from master
2019-03-19 08:12:49 -06:00
ac20d1ab41 fix corner-case issue with hyper communication, also timer 2019-03-18 09:52:16 -06:00
2bac365081 support old style PDF build for new pair style granular 2019-03-15 15:51:08 -04:00
a7a1fd4ee5 remove reference to USER-OMP version of fix wall/gran 2019-03-15 15:50:44 -04:00
4cd0ea61f2 change source code format style to be more like other LAMMPS sources 2019-03-15 15:33:15 -04:00
05a5ecd4d4 silence compiler warnings about unused parameters 2019-03-15 15:24:41 -04:00
27510f313c change formatting to closer resemble LAMMPS common source code format style 2019-03-15 15:24:16 -04:00
d278cfe230 remove pointless recursive self-include 2019-03-15 15:10:44 -04:00
b6459b3f74 Merge branch 'master' into gran_mods 2019-03-15 14:30:36 -04:00
28607f156e use C++ style include headers for accessing C library functions 2019-03-15 14:25:14 -04:00
c26068a57a use LAMMPS style indentation for class definitions 2019-03-15 14:24:45 -04:00
8845a1a0ae whitespace cleanup (remove ctrl-m, trailing whitespace) 2019-03-15 14:20:10 -04:00
3f0f2383b4 fix spelling and record false positives 2019-03-15 14:18:04 -04:00
3abfce01ca remove diverged fix wall/gran/omp 2019-03-15 14:06:03 -04:00
2558509b70 Merge pull request #1366 from jrgissing/bond/react-delete_internal_groups
Bond/react: unfixing deletes internal groups
2019-03-14 19:29:39 -04:00
d66b07dabe Commit2 JT 031419
- commit before solo tests
2019-03-14 15:39:45 -06:00
a3c936d283 bug fixes for new local hyperdynamics reduced comm 2019-03-14 15:13:02 -06:00
033a5c2721 Commit JT 031419
- cleaned fix_neb_spin
- first working version
2019-03-14 11:07:24 -06:00
5608f87c15 bond/react:unfix_deletes_internal_groups 2019-03-13 21:55:17 -06:00
5556567e91 Merge pull request #46 from lammps/master
rebase
2019-03-13 21:41:08 -06:00
8c50c3d7c8 Commit JT 031319
- improved gneb functions
- correct name in fix_neb (Weinan)
2019-03-13 17:02:40 -06:00
aca8ce1f53 Merge branch 'master' into hyper
sync with GH master
2019-03-13 12:19:06 -06:00
985fc86aa3 use ev_init for kspace 2019-03-13 17:55:30 +01:00
ff2d8e55c9 use ev_init for bonds 2019-03-13 17:54:10 +01:00
fbd600592b use ev_init for dihedrals 2019-03-13 17:53:22 +01:00
6e6f903818 use ev_init for angles 2019-03-13 17:51:41 +01:00
c7af948dfc use ev_init for impropers 2019-03-13 17:50:50 +01:00
17c81295c2 use ev_init for fixes 2019-03-13 17:50:10 +01:00
06a57dd659 use ev_unset for all pair styles 2019-03-13 17:49:16 +01:00
7fe1cceb76 fix some leftover bigint conversions, groupmap construction 2019-03-13 14:05:46 +01:00
e8efa01006 dynamical_matrix progress indicator 2019-03-13 14:05:46 +01:00
bb8398b22b streamline writeMatrix function 2019-03-13 14:05:46 +01:00
d30e69e871 fix writing binary dynmat file 2019-03-13 14:05:46 +01:00
adcd46da55 require an atom map for dynamical_matrix 2019-03-13 14:05:46 +01:00
3b234c167f USER-MEAMC: fix incomplete clearing of ev variables 2019-03-13 13:53:10 +01:00
2cc35ee777 A few additional enhancements to pair granular and fix wall granular option:
- NULL option for tangential stiffness, to set it based on shear modulus
- calculation of effective shear moduli from elastic moduli and Poisson's ratio
- updates to doc page example syntax
2019-03-13 00:42:08 -06:00
f6fb8b220d Commit 2 JT 031219
- modified examples (gneb and spinmin now distinct)
- started documention for spinmin
2019-03-12 16:59:13 -06:00
75ddde438c Commit JT 031219
- correct errors in fix_prec_spin
- clean version of spinmin
2019-03-12 14:38:49 -06:00
3a4bb6f980 All errors and warning are now printed through LAMMPS 2019-03-12 20:19:56 +01:00
cc2b5fbb80 Commit JT 031119
- add min_post_force in precession
2019-03-11 17:37:44 -06:00
e0c935b52d Additional changes to pair_granular:
-added mindlin and mindlin/rescale tangential model options
-torque from tangential force is now applied at the same point on both contacting particles
-updated doc page to reflect changes above
2019-03-11 14:28:44 -06:00
5fff18932d Commit 2 JT 031119
- new input files gneb and spinmin
2019-03-11 13:23:55 -06:00
14a00662e6 Commit JT 031119
- first working version of spinmin
2019-03-11 13:04:03 -06:00
c3acb3e4ef Merge pull request #1361 from akohlmey/collected-small-changes
Collected small changes for the next patch release
2019-03-08 12:11:59 -05:00
4e2ebf7feb Merge pull request #1352 from mkanski/reax_var_atoms
A partial fix for ReaxFF failure when the number of atoms increases during a simulation
2019-03-07 15:44:15 -05:00
2077df5465 Merge pull request #1363 from stanmoore1/kk_deprecated
Remove deprecated code in KOKKOS package
2019-03-07 15:42:58 -05:00
e62746ef27 protect group command against options that require unavailble properties resulting in segfaults 2019-03-07 15:38:23 -05:00
a5c93e75a5 ignore src/lmpgitversion.h 2019-03-07 15:12:22 -05:00
3bc815efe8 fix a memory leak in fix bocs 2019-03-07 15:11:33 -05:00
9cb2a56194 Remove deprecated Kokkos code 2019-03-07 10:47:40 -07:00
0edc588458 Replace deprecated Kokkos capacity() with span() 2019-03-07 10:23:17 -07:00
f0e48931e4 Remove deprecated KOKKO_HAVE macros 2019-03-07 10:17:32 -07:00
9408dd6e92 use simpler way whether we are inside a git checkout in conventional build 2019-03-06 18:41:43 -05:00
4e632d1b79 implement another suggestion from @junghans 2019-03-06 17:32:08 -05:00
2918dae87e correct variable name and path to find the local .git folder 2019-03-06 17:12:41 -05:00
fe56cf04bc simplify the detection of whether the source folder is checked out from a local git repo 2019-03-06 17:04:14 -05:00
436e02aa6e small corrections/clarifications to the pull request template 2019-03-06 16:59:17 -05:00
4ee98d18da Fixed missing reference in pair_granular doc page 2019-03-06 14:15:19 -07:00
9a6dc2ff11 Removed several files that should not have been included 2019-03-06 13:54:32 -07:00
c0ce8591e7 Merge pull request #1358 from ellio167/kim-link-update
Update openkim.org urls in various places
2019-03-06 12:22:12 -05:00
b628e3b1b6 Update openkim.org urls in various places 2019-03-06 10:26:03 -06:00
4a17cb3467 Merge pull request #1357 from akohlmey/embed-git-revision
Embed git branch and revision info into LAMMPS class
2019-03-05 23:31:16 -05:00
c5a3b034ce implement various suggestions to improve the use of git information gathered 2019-03-05 17:29:34 -05:00
bfa950a7e9 Added initialization for grown arrays 2019-03-05 22:40:10 +01:00
390fc873bc Merge pull request #1355 from julient31/bfo_spin
bugfix update for SPIN package
2019-03-05 14:27:28 -05:00
6b8a768f6c Merge pull request #1356 from akohlmey/address-user-smtbq-vla-issue
Address Variable-Length-Array issues, memory leaks, uninitialized data access issues in USER-SMTBQ
2019-03-05 14:26:30 -05:00
146e2f283a Better error handling in reaxc_forces 2019-03-05 19:11:33 +01:00
1c7d191988 also print git version (if available) in multi-partition runs and in help message 2019-03-05 09:03:12 -05:00
1e573bd557 when compiling LAMMPS in a git checkout, embed and print git branch and revision info into the executable 2019-03-05 08:35:53 -05:00
bc4a80d9e8 Merge pull request #1354 from akohlmey/collected-small-fixes
Collected small fixes and updates for the next patch release
2019-03-05 00:55:36 -05:00
fa7b5ecfa3 disable chimet array in pair style smtbq, which was never set anywhere 2019-03-05 00:45:40 -05:00
6ed8fbbd51 handle uninitialized data access issues and out-of-bounds access for single element calculations 2019-03-04 18:01:55 -05:00
0d1524526a work around the remaining variable length array cases. fix an off-by-one error, too. 2019-03-04 17:26:55 -05:00
ab0c35be93 Commit JT 030419
- correction of pair_spin calculations
- corrects an error between i and ii lists in single/pair calc.
2019-03-04 08:04:11 -07:00
849e52040a Merge branch 'clean-master2' of github.com:julient31/lammps into bfo_spin 2019-03-04 07:51:12 -07:00
edd4b0cf25 Commit JT 030419
- added minspin
- modifs before co
2019-03-04 07:35:02 -07:00
f0ec2e3279 refactoring of global and local hyper, including amended doc pages 2019-03-01 18:47:34 -07:00
5ecbb8bd01 fix int vs. bigint issue and add NULL file pointer check to dynamical_matrix 2019-03-01 09:46:13 -05:00
30ee2f3d78 avoid windows portability issues with int32_t 2019-03-01 09:37:38 -05:00
0f0a65bb48 plug small memory leak in USER-ADIOS 2019-03-01 09:37:33 -05:00
d8845b6817 Added initialization of the entire num_bonds and num_hbonds arrays 2019-03-01 13:13:11 +01:00
87a243203b Removed pair_granular.cpp/h from src directory 2019-02-28 16:46:21 -07:00
47b0c77dd9 replace variable length arrays with std::vector 2019-02-28 17:53:50 -05:00
fbc9cf8354 fix huge memory leak 2019-02-28 17:53:17 -05:00
c555f7e2ed update permissions 2019-02-28 17:52:53 -05:00
eea30c5b76 half-bond lists and no bond migration for local hyper 2019-02-26 16:17:31 -07:00
4e26ca29f7 Changes to new generalized granular pair styles and fix wall/gran
-Clean-up of unused variables in code
-Bug fix for single method of pair granular
-Changes to fix wall/gran to fix issues with JKR
-Doc page updates for fix wall/gran and fix wall/gran/region
2019-02-19 16:47:13 -07:00
ff795e761a Added generalized granular option to fix wall/gran and fix wall/gran/region; some minor bug fixes for pair granular 2019-02-19 14:31:27 -07:00
d8e8a0d2d2 More changes to pair granular:
- tangential damping now set by scaling the normal damping
- some fixes to the twisting coefficients for the Marshall twist model
- progress (completion?) of doc page
2019-02-18 09:58:34 -07:00
6ff1557af8 More progress on doc page 2019-02-12 07:42:26 -07:00
b7413226e0 Several changes to new consolidated granular code:
- Normal contact models take Young's modulus and Poisson's ratio (instead of Young's and shear modulus)
- Mixing of Young's moduli corrected
- Changes to cutoffs corrected for JKR pulloff distance
- Renamed 'mindlin' to 'linear_history'
- Progress on doc page
2019-02-11 21:37:06 -07:00
e96878a70e Commit JT 020619
- correction gneb/spin
- run but do not converge yet
- check forces
2019-02-06 11:35:33 -07:00
9fcd69921f Commit JT 020419
- neb/spin implemneted
- rotational initial states to be implemented
- climbing image to be implemented
2019-02-04 11:27:00 -07:00
9915a6725f Commit JT 020419
- correct in magelec (if ii<n)
- check correct, apply it to other pairs
2019-02-04 17:21:59 +01:00
e195d6faee Fixed issue with not setting i-j, j-i coefficients correctly 2019-01-30 08:37:04 -07:00
08b1728a96 Commit JT 012919
- commit tuesday evening, second day imp.
- dev. fix_neb_spin
2019-01-29 13:05:03 -07:00
a278df586d cleanup up rendezvous diagnostic output 2019-01-24 09:56:21 -07:00
4ce68cf5fd added diagnostic info for memory and balance info 2019-01-23 16:01:10 -07:00
9de0262155 added rendezvous via all2all 2019-01-23 14:49:52 -07:00
26eb17aa50 Fixed tangential damping in pair granular; fixed order of template arguments, so that pair gran and gran/multi now produce identical results for same settings (as they should) 2019-01-15 16:42:06 -07:00
6e4e244e65 More doc page additions 2019-01-15 13:31:16 -07:00
ef803be08e Moved all model option syntax for pair granular to pair coeff command;
added global cutoff option for pair style granular command; initial
write-up of documentation.
2019-01-15 10:18:46 -07:00
29dcdec875 Separated templated pair granular from pair granular/multi 2019-01-10 16:53:50 -07:00
18f8f68e67 Fixed several input parsing issues in pair granular; fixed issue with JKR hysteresis and damping with JKR 2019-01-08 16:33:24 -07:00
faa716e348 Added PairGranular::single method 2019-01-07 16:27:04 -07:00
dced4c1fca More changes, fixed indentation issues 2019-01-04 17:03:31 -07:00
7b4d0092b0 Added type- and form-dependent conditionals in PairGranular::compute,
still some issues with overall structure of the code.
2018-12-22 14:33:09 -07:00
71ed60ced3 More work on compute method for generalized pair granular 2018-12-21 15:41:46 -07:00
009d8c8ebf Added parsing to pair_coeff, added for for init_one 2018-12-21 09:29:47 -07:00
7861de03a2 Progress on general granular pair style 2018-12-20 16:59:21 -07:00
fd8130859b fix a small memory leak in SHAKE setup 2018-12-19 17:40:35 -07:00
67782d71a8 Granular pair style files added 2018-12-18 21:23:04 -07:00
7cdb4675ee Merge branch 'master' of github.com:lammps/lammps into gran_mods 2018-12-18 13:41:38 -07:00
e538fd5c6d added rendezvous alg to fix shake 2018-12-12 17:14:56 -07:00
7c3d6dc051 propagate rendezvous changes to fix rigid/small 2018-12-07 16:43:01 -07:00
ece1aff7e9 less comm version of special bonds rendezvous 2018-12-07 15:46:27 -07:00
3021189cc9 Merge branch 'master' of github.com:lammps/lammps into gran_mods 2018-12-05 13:52:52 -07:00
2e0d69b005 replace STL map with atom->map in special, better code comments 2018-11-30 13:06:31 -07:00
ab1c3f6498 rendevous comm option for special bonds and fix rigid/small 2018-11-30 11:54:48 -07:00
52cb8cf51b Merge conflicts in fwgr.cpp fixed 2018-10-18 16:39:20 -06:00
286a284c5a Merge branch 'gran_mods' of github.com:dsbolin/lammps 2018-07-13 15:06:44 -06:00
5dafd03d1f Various fixes to fix/wall/gran DMT 2018-05-10 13:56:02 -06:00
158c7531fe Added pair/gran/dmt as a granular wall interaction option 2018-04-16 16:03:50 -06:00
f94c5b7637 Added 'store_contacts' option to fix/wall/gran/region to store info about individual particle-wall contacts 2018-04-16 12:40:22 -06:00
85e934681d Added DMT and JKR pair styles with rolling friction 2018-04-16 12:39:45 -06:00
950 changed files with 24593 additions and 9843 deletions

View File

@ -4,7 +4,7 @@ _Briefly describe the new feature(s), enhancement(s), or bugfix(es) included in
**Related Issues**
__If this addresses an open GitHub Issue, mention the issue number here. Use the phrases `fixes #221` or `closes #135`, when you want those issues to be automatically closed when the pull request is merged_
_If this addresses an open GitHub issue for this project, please mention the issue number here, and describe the relation. Use the phrases `fixes #221` or `closes #135`, when you want an issue to be automatically closed when the pull request is merged_
**Author(s)**
@ -16,7 +16,7 @@ By submitting this pull request, I agree, that my contribution will be included
**Backward Compatibility**
_Please state whether any changes in the pull request break backward compatibility for inputs, and - if yes - explain what has been changed and why_
_Please state whether any changes in the pull request will break backward compatibility for inputs, and - if yes - explain what has been changed and why_
**Implementation Notes**
@ -24,7 +24,7 @@ _Provide any relevant details about how the changes are implemented, how correct
**Post Submission Checklist**
_Please check the fields below as they are completed **after** the pull request has been submitted_
_Please check the fields below as they are completed **after** the pull request has been submitted. Delete lines that don't apply_
- [ ] The feature or features in this pull request is complete
- [ ] Licensing information is complete

View File

@ -11,6 +11,8 @@ get_filename_component(LAMMPS_LIB_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../lib
get_filename_component(LAMMPS_LIB_BINARY_DIR ${CMAKE_BINARY_DIR}/lib ABSOLUTE)
get_filename_component(LAMMPS_DOC_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../doc ABSOLUTE)
find_package(Git)
# by default, install into $HOME/.local (not /usr/local), so that no root access (and sudo!!) is needed
if (CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
set(CMAKE_INSTALL_PREFIX "$ENV{HOME}/.local" CACHE PATH "default install path" FORCE )
@ -85,7 +87,7 @@ string(TOUPPER "${CMAKE_BUILD_TYPE}" BTYPE)
# this is fast, so check for it all the time
message(STATUS "Running check for auto-generated files from make-based build system")
file(GLOB SRC_AUTOGEN_FILES ${LAMMPS_SOURCE_DIR}/style_*.h)
list(APPEND SRC_AUTOGEN_FILES ${LAMMPS_SOURCE_DIR}/lmpinstalledpkgs.h)
list(APPEND SRC_AUTOGEN_FILES ${LAMMPS_SOURCE_DIR}/lmpinstalledpkgs.h ${LAMMPS_SOURCE_DIR}/lmpgitversion.h)
foreach(_SRC ${SRC_AUTOGEN_FILES})
get_filename_component(FILENAME "${_SRC}" NAME)
if(EXISTS ${LAMMPS_SOURCE_DIR}/${FILENAME})
@ -205,7 +207,7 @@ include_directories(${LAMMPS_SOURCE_DIR})
if(PKG_USER-ADIOS)
# The search for ADIOS2 must come before MPI because
# it includes its own MPI search with the latest FindMPI.cmake
# script that defines the MPI::MPI_C target
# script that defines the MPI::MPI_C target
enable_language(C)
find_package(ADIOS2 REQUIRED)
list(APPEND LAMMPS_LINK_LIBS adios2::adios2)
@ -318,10 +320,15 @@ pkg_depends(USER-LB MPI)
pkg_depends(USER-PHONON KSPACE)
pkg_depends(USER-SCAFACOS MPI)
include(CheckIncludeFileCXX)
find_package(OpenMP QUIET)
option(BUILD_OMP "Build with OpenMP support" ${OpenMP_FOUND})
if(BUILD_OMP OR PKG_KOKKOS OR PKG_USER-INTEL)
if(BUILD_OMP)
find_package(OpenMP REQUIRED)
check_include_file_cxx(omp.h HAVE_OMP_H_INCLUDE)
if(NOT HAVE_OMP_H_INCLUDE)
message(FATAL_ERROR "Cannot find required 'omp.h' header file")
endif()
set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${OpenMP_C_FLAGS}")
set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS}")
endif()
@ -365,7 +372,7 @@ if(PKG_KSPACE)
endif()
endif()
if(PKG_MSCG OR PKG_USER-ATC OR PKG_USER-AWPMD OR PKG_USER-QUIP OR PKG_LATTE)
if(PKG_MSCG OR PKG_USER-ATC OR PKG_USER-AWPMD OR PKG_USER-PLUMED OR PKG_USER-QUIP OR PKG_LATTE)
find_package(LAPACK)
find_package(BLAS)
if(NOT LAPACK_FOUND OR NOT BLAS_FOUND)
@ -379,19 +386,10 @@ if(PKG_MSCG OR PKG_USER-ATC OR PKG_USER-AWPMD OR PKG_USER-QUIP OR PKG_LATTE)
endif()
if(PKG_PYTHON)
find_package(PythonInterp REQUIRED)
find_package(PythonLibs REQUIRED)
add_definitions(-DLMP_PYTHON)
include_directories(${PYTHON_INCLUDE_DIR})
list(APPEND LAMMPS_LINK_LIBS ${PYTHON_LIBRARY})
if(BUILD_LIB AND BUILD_SHARED_LIBS)
if(NOT PYTHON_INSTDIR)
execute_process(COMMAND ${PYTHON_EXECUTABLE}
-c "import distutils.sysconfig as cg; print(cg.get_python_lib(1,0,prefix='${CMAKE_INSTALL_PREFIX}'))"
OUTPUT_VARIABLE PYTHON_INSTDIR OUTPUT_STRIP_TRAILING_WHITESPACE)
endif()
install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/../python/lammps.py DESTINATION ${PYTHON_INSTDIR})
endif()
endif()
find_package(JPEG QUIET)
@ -450,7 +448,13 @@ endif()
if(PKG_VORONOI)
option(DOWNLOAD_VORO "Download and compile the Voro++ library instead of using an already installed one" OFF)
find_package(VORO)
if(VORO_FOUND)
set(DOWNLOAD_VORO_DEFAULT OFF)
else()
set(DOWNLOAD_VORO_DEFAULT ON)
endif()
option(DOWNLOAD_VORO "Download and compile the Voro++ library instead of using an already installed one" ${DOWNLOAD_VORO_DEFAULT})
if(DOWNLOAD_VORO)
message(STATUS "Voro++ download requested - we will build our own")
include(ExternalProject)
@ -483,7 +487,13 @@ if(PKG_VORONOI)
endif()
if(PKG_LATTE)
option(DOWNLOAD_LATTE "Download the LATTE library instead of using an already installed one" OFF)
find_package(LATTE)
if(LATTE_FOUND)
set(DOWNLOAD_LATTE_DEFAULT OFF)
else()
set(DOWNLOAD_LATTE_DEFAULT ON)
endif()
option(DOWNLOAD_LATTE "Download the LATTE library instead of using an already installed one" ${DOWNLOAD_LATTE_DEFAULT})
if(DOWNLOAD_LATTE)
if (CMAKE_VERSION VERSION_LESS "3.7") # due to SOURCE_SUBDIR
message(FATAL_ERROR "For downlading LATTE you need at least cmake-3.7")
@ -494,7 +504,7 @@ if(PKG_LATTE)
URL https://github.com/lanl/LATTE/archive/v1.2.1.tar.gz
URL_MD5 85ac414fdada2d04619c8f936344df14
SOURCE_SUBDIR cmake
CMAKE_ARGS -DCMAKE_INSTALL_PREFIX=<INSTALL_DIR> ${CMAKE_REQUEST_PIC}
CMAKE_ARGS -DCMAKE_INSTALL_PREFIX=<INSTALL_DIR> ${CMAKE_REQUEST_PIC} -DBLAS_LIBRARIES=${BLAS_LIBRARIES} -DLAPACK_LIBRARIES=${LAPACK_LIBRARIES}
)
ExternalProject_get_property(latte_build INSTALL_DIR)
set(LATTE_LIBRARIES ${INSTALL_DIR}/${CMAKE_INSTALL_LIBDIR}/liblatte.a)
@ -510,7 +520,15 @@ endif()
if(PKG_USER-SCAFACOS)
find_package(GSL REQUIRED)
option(DOWNLOAD_SCAFACOS "Download ScaFaCoS library instead of using an already installed one" OFF)
find_package(PkgConfig QUIET)
set(DOWNLOAD_SCAFACOS_DEFAULT ON)
if(PKG_CONFIG_FOUND)
pkg_check_modules(SCAFACOS QUIET scafacos)
if(SCAFACOS_FOUND)
set(DOWNLOAD_SCAFACOS_DEFAULT OFF)
endif()
endif()
option(DOWNLOAD_SCAFACOS "Download ScaFaCoS library instead of using an already installed one" ${DOWNLOAD_SCAFACOS_DEFAULT})
if(DOWNLOAD_SCAFACOS)
message(STATUS "ScaFaCoS download requested - we will build our own")
include(ExternalProject)
@ -550,8 +568,8 @@ if(PKG_USER-SCAFACOS)
list(APPEND LAMMPS_LINK_LIBS ${MPI_Fortran_LIBRARIES})
list(APPEND LAMMPS_LINK_LIBS ${MPI_C_LIBRARIES})
else()
FIND_PACKAGE(PkgConfig REQUIRED)
PKG_CHECK_MODULES(SCAFACOS scafacos REQUIRED)
find_package(PkgConfig REQUIRED)
pkg_check_modules(SCAFACOS REQUIRED scafacos)
list(APPEND LAMMPS_LINK_LIBS ${SCAFACOS_LDFLAGS})
endif()
include_directories(${SCAFACOS_INCLUDE_DIRS})
@ -565,29 +583,53 @@ if(PKG_USER-PLUMED)
validate_option(PLUMED_MODE PLUMED_MODE_VALUES)
string(TOUPPER ${PLUMED_MODE} PLUMED_MODE)
option(DOWNLOAD_PLUMED "Download Plumed package instead of using an already installed one" OFF)
find_package(PkgConfig QUIET)
set(DOWNLOAD_PLUMED_DEFAULT ON)
if(PKG_CONFIG_FOUND)
pkg_check_modules(PLUMED QUIET plumed)
if(PLUMED_FOUND)
set(DOWNLOAD_PLUMED_DEFAULT OFF)
endif()
endif()
option(DOWNLOAD_PLUMED "Download Plumed package instead of using an already installed one" ${DOWNLOAD_PLUMED_DEFAULT})
if(DOWNLOAD_PLUMED)
if(BUILD_MPI)
set(PLUMED_CONFIG_MPI "--enable-mpi")
set(PLUMED_CONFIG_CC ${CMAKE_MPI_C_COMPILER})
set(PLUMED_CONFIG_CXX ${CMAKE_MPI_CXX_COMPILER})
else()
set(PLUMED_CONFIG_MPI "--disable-mpi")
set(PLUMED_CONFIG_CC ${CMAKE_C_COMPILER})
set(PLUMED_CONFIG_CXX ${CMAKE_CXX_COMPILER})
endif()
if(BUILD_OMP)
set(PLUMED_CONFIG_OMP "--enable-openmp")
else()
set(PLUMED_CONFIG_OMP "--disable-openmp")
endif()
message(STATUS "PLUMED download requested - we will build our own")
include(ExternalProject)
ExternalProject_Add(plumed_build
URL https://github.com/plumed/plumed2/releases/download/v2.4.4/plumed-src-2.4.4.tgz
URL_MD5 71ed465bdc7c2059e282dbda8d564e71
URL https://github.com/plumed/plumed2/releases/download/v2.5.1/plumed-src-2.5.1.tgz
URL_MD5 c2a7b519e32197a120cdf47e0f194f81
BUILD_IN_SOURCE 1
CONFIGURE_COMMAND <SOURCE_DIR>/configure --prefix=<INSTALL_DIR>
${CONFIGURE_REQUEST_PIC}
--enable-modules=all
CXX=${CMAKE_MPI_CXX_COMPILER}
CC=${CMAKE_MPI_C_COMPILER}
--enable-modules=all
${PLUMED_CONFIG_MPI}
${PLUMED_CONFIG_OMP}
CXX=${PLUMED_CONFIG_CXX}
CC=${PLUMED_CONFIG_CC}
)
ExternalProject_get_property(plumed_build INSTALL_DIR)
set(PLUMED_INSTALL_DIR ${INSTALL_DIR})
list(APPEND LAMMPS_DEPS plumed_build)
if(PLUMED_MODE STREQUAL "STATIC")
add_definitions(-D__PLUMED_WRAPPER_CXX=1)
list(APPEND LAMMPS_LINK_LIBS ${PLUMED_INSTALL_DIR}/lib/plumed/obj/kernel.o
"${PLUMED_INSTALL_DIR}/lib/plumed/obj/PlumedStatic.o" ${GSL_LIBRARIES} ${CMAKE_DL_LIBS})
list(APPEND LAMMPS_LINK_LIBS ${PLUMED_INSTALL_DIR}/lib/libplumed.a ${GSL_LIBRARIES} ${LAPACK_LIBRARIES} ${CMAKE_DL_LIBS})
elseif(PLUMED_MODE STREQUAL "SHARED")
list(APPEND LAMMPS_LINK_LIBS ${PLUMED_INSTALL_DIR}/lib/libplumed.so ${CMAKE_DL_LIBS})
list(APPEND LAMMPS_LINK_LIBS ${PLUMED_INSTALL_DIR}/lib/libplumed.so ${PLUMED_INSTALL_DIR}/lib/libplumedKernel.so ${CMAKE_DL_LIBS})
elseif(PLUMED_MODE STREQUAL "RUNTIME")
add_definitions(-D__PLUMED_HAS_DLOPEN=1 -D__PLUMED_DEFAULT_KERNEL=${PLUMED_INSTALL_DIR}/lib/libplumedKernel.so)
list(APPEND LAMMPS_LINK_LIBS ${PLUMED_INSTALL_DIR}/lib/libplumedWrapper.a -rdynamic ${CMAKE_DL_LIBS})
@ -595,7 +637,7 @@ if(PKG_USER-PLUMED)
set(PLUMED_INCLUDE_DIRS "${PLUMED_INSTALL_DIR}/include")
else()
find_package(PkgConfig REQUIRED)
pkg_check_modules(PLUMED plumed REQUIRED)
pkg_check_modules(PLUMED REQUIRED plumed)
if(PLUMED_MODE STREQUAL "STATIC")
add_definitions(-D__PLUMED_WRAPPER_CXX=1)
include(${PLUMED_LIBDIR}/plumed/src/lib/Plumed.cmake.static)
@ -611,9 +653,13 @@ if(PKG_USER-PLUMED)
endif()
if(PKG_USER-MOLFILE)
set(MOLFILE_INCLUDE_DIRS "${LAMMPS_LIB_SOURCE_DIR}/molfile" CACHE STRING "Path to VMD molfile plugin headers")
add_library(molfile INTERFACE)
target_include_directories(molfile INTERFACE ${LAMMPS_LIB_SOURCE_DIR}/molfile)
target_link_libraries(molfile INTERFACE ${CMAKE_DL_LIBS})
target_include_directories(molfile INTERFACE ${MOLFILE_INCLUDE_DIRS})
# no need to link with -ldl on windows
if(NOT ${CMAKE_SYSTEM_NAME} STREQUAL "Windows")
target_link_libraries(molfile INTERFACE ${CMAKE_DL_LIBS})
endif()
list(APPEND LAMMPS_LINK_LIBS molfile)
endif()
@ -624,9 +670,14 @@ if(PKG_USER-NETCDF)
add_definitions(-DLMP_HAS_NETCDF -DNC_64BIT_DATA=0x0020)
endif()
if(PKG_USER-SMD)
option(DOWNLOAD_EIGEN3 "Download Eigen3 instead of using an already installed one)" OFF)
find_package(Eigen3 NO_MODULE)
if(EIGEN3_FOUND)
set(DOWNLOAD_EIGEN3_DEFAULT OFF)
else()
set(DOWNLOAD_EIGEN3_DEFAULT ON)
endif()
option(DOWNLOAD_EIGEN3 "Download Eigen3 instead of using an already installed one)" ${DOWNLOAD_EIGEN3_DEFAULT})
if(DOWNLOAD_EIGEN3)
message(STATUS "Eigen3 download requested - we will build our own")
include(ExternalProject)
@ -668,15 +719,27 @@ if(PKG_USER-VTK)
endif()
if(PKG_KIM)
option(DOWNLOAD_KIM "Download KIM-API v2 from OpenKIM instead of using an already installed one" OFF)
find_package(CURL)
if(CURL_FOUND)
include_directories(${CURL_INCLUDE_DIRS})
list(APPEND LAMMPS_LINK_LIBS ${CURL_LIBRARIES})
add_definitions(-DLMP_KIM_CURL)
endif()
find_package(KIM-API QUIET)
if(KIM-API_FOUND)
set(DOWNLOAD_KIM_DEFAULT OFF)
else()
set(DOWNLOAD_KIM_DEFAULT ON)
endif()
option(DOWNLOAD_KIM "Download KIM-API from OpenKIM instead of using an already installed one" ${DOWNLOAD_KIM_DEFAULT})
if(DOWNLOAD_KIM)
message(STATUS "KIM-API v2 download requested - we will build our own")
message(STATUS "KIM-API download requested - we will build our own")
enable_language(C)
enable_language(Fortran)
include(ExternalProject)
ExternalProject_Add(kim_build
URL https://s3.openkim.org/kim-api/kim-api-v2-2.0.1.txz
URL_MD5 289c57f0c3bc2a549662283cac1c4ef1
URL https://s3.openkim.org/kim-api/kim-api-2.0.2.txz
URL_MD5 537d9c0abd30f85b875ebb584f9143fa
BINARY_DIR build
CMAKE_ARGS -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER}
-DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}
@ -685,17 +748,14 @@ if(PKG_KIM)
-DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}
)
ExternalProject_get_property(kim_build INSTALL_DIR)
set(KIM-API-V2_INCLUDE_DIRS ${INSTALL_DIR}/include/kim-api-v2)
set(KIM-API-V2_LDFLAGS ${INSTALL_DIR}/${CMAKE_INSTALL_LIBDIR}/libkim-api-v2${CMAKE_SHARED_LIBRARY_SUFFIX})
set(KIM-API_INCLUDE_DIRS ${INSTALL_DIR}/include/kim-api)
set(KIM-API_LDFLAGS ${INSTALL_DIR}/${CMAKE_INSTALL_LIBDIR}/libkim-api${CMAKE_SHARED_LIBRARY_SUFFIX})
list(APPEND LAMMPS_DEPS kim_build)
else()
find_package(KIM-API-V2)
if(NOT KIM-API-V2_FOUND)
message(FATAL_ERROR "KIM-API v2 not found, help CMake to find it by setting PKG_CONFIG_PATH, or set DOWNLOAD_KIM=ON to download it")
endif()
find_package(KIM-API REQUIRED)
endif()
list(APPEND LAMMPS_LINK_LIBS "${KIM-API-V2_LDFLAGS}")
include_directories(${KIM-API-V2_INCLUDE_DIRS})
list(APPEND LAMMPS_LINK_LIBS "${KIM-API_LDFLAGS}")
include_directories(${KIM-API_INCLUDE_DIRS})
endif()
if(PKG_MESSAGE)
@ -710,6 +770,7 @@ if(PKG_MESSAGE)
set_target_properties(cslib PROPERTIES OUTPUT_NAME "csmpi")
else()
target_compile_definitions(cslib PRIVATE -DMPI_NO)
target_include_directories(cslib PRIVATE ${LAMMPS_LIB_SOURCE_DIR}/message/cslib/src/STUBS_MPI)
set_target_properties(cslib PROPERTIES OUTPUT_NAME "csnompi")
endif()
@ -729,7 +790,13 @@ endif()
if(PKG_MSCG)
find_package(GSL REQUIRED)
option(DOWNLOAD_MSCG "Download MSCG library instead of using an already installed one)" OFF)
find_package(MSCG QUIET)
if(MSGC_FOUND)
set(DOWNLOAD_MSCG_DEFAULT OFF)
else()
set(DOWNLOAD_MSCG_DEFAULT ON)
endif()
option(DOWNLOAD_MSCG "Download MSCG library instead of using an already installed one)" ${DOWNLOAD_MSCG_DEFAULT})
if(DOWNLOAD_MSCG)
if (CMAKE_VERSION VERSION_LESS "3.7") # due to SOURCE_SUBDIR
message(FATAL_ERROR "For downlading MSCG you need at least cmake-3.7")
@ -778,7 +845,6 @@ endif()
########################################################################
# Basic system tests (standard libraries, headers, functions, types) #
########################################################################
include(CheckIncludeFileCXX)
foreach(HEADER cmath)
check_include_file_cxx(${HEADER} FOUND_${HEADER})
if(NOT FOUND_${HEADER})
@ -945,7 +1011,7 @@ if(PKG_USER-OMP)
# detects styles which have USER-OMP version
RegisterStylesExt(${USER-OMP_SOURCES_DIR} omp OMP_SOURCES)
RegisterFixStyle("${USER-OMP_SOURCES_DIR}/fix_omp.h")
RegisterFixStyle(${USER-OMP_SOURCES_DIR}/fix_omp.h)
get_property(USER-OMP_SOURCES GLOBAL PROPERTY OMP_SOURCES)
@ -1058,37 +1124,79 @@ if(PKG_OPT)
endif()
if(PKG_USER-INTEL)
find_package(TBB REQUIRED)
find_package(MKL REQUIRED)
if(LAMMPS_SIZES STREQUAL BIGBIG)
message(FATAL_ERROR "The USER-INTEL Package is not compatible with -DLAMMPS_BIGBIG")
endif()
add_definitions(-DLMP_USER_INTEL)
if(NOT CMAKE_CXX_COMPILER_ID STREQUAL "Intel")
message(FATAL_ERROR "USER-INTEL is only useful together with intel compiler")
endif()
set(INTEL_ARCH "cpu" CACHE STRING "Architectures used by USER-INTEL (cpu or knl)")
set(INTEL_ARCH_VALUES cpu knl)
set_property(CACHE INTEL_ARCH PROPERTY STRINGS ${INTEL_ARCH_VALUES})
validate_option(INTEL_ARCH INTEL_ARCH_VALUES)
string(TOUPPER ${INTEL_ARCH} INTEL_ARCH)
if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 16)
message(FATAL_ERROR "USER-INTEL needs at least a 2016 intel compiler, found ${CMAKE_CXX_COMPILER_VERSION}")
endif()
if(NOT BUILD_OMP)
message(FATAL_ERROR "USER-INTEL requires OpenMP")
endif()
if(NOT ${LAMMPS_MEMALIGN} STREQUAL "64")
message(FATAL_ERROR "USER-INTEL is only useful with LAMMPS_MEMALIGN=64")
endif()
set(INTEL_ARCH "cpu" CACHE STRING "Architectures used by USER-INTEL (cpu or knl)")
set(INTEL_ARCH_VALUES cpu knl)
set_property(CACHE INTEL_ARCH PROPERTY STRINGS ${INTEL_ARCH_VALUES})
validate_option(INTEL_ARCH INTEL_ARCH_VALUES)
string(TOUPPER ${INTEL_ARCH} INTEL_ARCH)
if(INTEL_ARCH STREQUAL "KNL")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -xHost -qopenmp -qoffload")
set(MIC_OPTIONS "-qoffload-option,mic,compiler,\"-fp-model fast=2 -mGLOB_default_function_attrs=\\\"gather_scatter_loop_unroll=4\\\"\"")
add_compile_options(-xMIC-AVX512 -qoffload -fno-alias -ansi-alias -restrict -qoverride-limits ${MIC_OPTIONS})
add_definitions(-DLMP_INTEL_OFFLOAD)
find_package(Threads QUIET)
if(Threads_FOUND)
set(INTEL_LRT_MODE "threads" CACHE STRING "Long-range threads mode (none, threads, or c++11)")
else()
set(INTEL_LRT_MODE "none" CACHE STRING "Long-range threads mode (none, threads, or c++11)")
endif()
set(INTEL_LRT_VALUES none threads c++11)
set_property(CACHE INTEL_LRT_MODE PROPERTY STRINGS ${INTEL_LRT_VALUES})
validate_option(INTEL_LRT_MODE INTEL_LRT_VALUES)
string(TOUPPER ${INTEL_LRT_MODE} INTEL_LRT_MODE)
if(INTEL_LRT_MODE STREQUAL "THREADS")
if(Threads_FOUND)
add_definitions(-DLMP_INTEL_USELRT)
list(APPEND LAMMPS_LINK_LIBS ${CMAKE_THREAD_LIBS_INIT})
else()
message(FATAL_ERROR "Must have working threads library for Long-range thread support")
endif()
endif()
if(INTEL_LRT_MODE STREQUAL "C++11")
add_definitions(-DLMP_INTEL_USERLRT -DLMP_INTEL_LRT11)
endif()
if(CMAKE_CXX_COMPILER_ID STREQUAL "Intel")
if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 16)
message(FATAL_ERROR "USER-INTEL needs at least a 2016 Intel compiler, found ${CMAKE_CXX_COMPILER_VERSION}")
endif()
else()
message(WARNING "USER-INTEL gives best performance with Intel compilers")
endif()
find_package(TBB QUIET)
if(TBB_FOUND)
list(APPEND LAMMPS_LINK_LIBS ${TBB_MALLOC_LIBRARIES})
else()
add_definitions(-DLMP_INTEL_NO_TBB)
if(CMAKE_CXX_COMPILER_ID STREQUAL "Intel")
message(WARNING "USER-INTEL with Intel compilers should use TBB malloc libraries")
endif()
endif()
find_package(MKL QUIET)
if(MKL_FOUND)
add_definitions(-DLMP_USE_MKL_RNG)
list(APPEND LAMMPS_LINK_LIBS ${MKL_LIBRARIES})
else()
message(STATUS "Pair style dpd/intel will be faster with MKL libraries")
endif()
if((NOT ${CMAKE_SYSTEM_NAME} STREQUAL "Windows") AND (NOT ${LAMMPS_MEMALIGN} STREQUAL "64") AND (NOT ${LAMMPS_MEMALIGN} STREQUAL "128") AND (NOT ${LAMMPS_MEMALIGN} STREQUAL "256"))
message(FATAL_ERROR "USER-INTEL only supports memory alignment of 64, 128 or 256 on this platform")
endif()
if(INTEL_ARCH STREQUAL "KNL")
if(NOT CMAKE_CXX_COMPILER_ID STREQUAL "Intel")
message(FATAL_ERROR "Must use Intel compiler with USER-INTEL for KNL architecture")
endif()
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -xHost -qopenmp -qoffload")
set(MIC_OPTIONS "-qoffload-option,mic,compiler,\"-fp-model fast=2 -mGLOB_default_function_attrs=\\\"gather_scatter_loop_unroll=4\\\"\"")
add_compile_options(-xMIC-AVX512 -qoffload -fno-alias -ansi-alias -restrict -qoverride-limits ${MIC_OPTIONS})
add_definitions(-DLMP_INTEL_OFFLOAD)
else()
if(CMAKE_CXX_COMPILER_ID STREQUAL "Intel")
if(CMAKE_CXX_COMPILER_VERSION VERSION_EQUAL 17.3 OR CMAKE_CXX_COMPILER_VERSION VERSION_EQUAL 17.4)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -xCOMMON-AVX512")
else()
@ -1101,33 +1209,33 @@ if(PKG_USER-INTEL)
add_compile_options(${_FLAG})
endif()
endforeach()
else()
add_compile_options(-O3 -ffast-math)
endif()
endif()
add_definitions(-DLMP_INTEL_USELRT -DLMP_USE_MKL_RNG)
# collect sources
set(USER-INTEL_SOURCES_DIR ${LAMMPS_SOURCE_DIR}/USER-INTEL)
set(USER-INTEL_SOURCES ${USER-INTEL_SOURCES_DIR}/fix_intel.cpp
${USER-INTEL_SOURCES_DIR}/fix_nh_intel.cpp
${USER-INTEL_SOURCES_DIR}/intel_buffers.cpp
${USER-INTEL_SOURCES_DIR}/nbin_intel.cpp
${USER-INTEL_SOURCES_DIR}/npair_intel.cpp
${USER-INTEL_SOURCES_DIR}/verlet_lrt_intel.cpp)
list(APPEND LAMMPS_LINK_LIBS ${TBB_MALLOC_LIBRARIES} ${MKL_LIBRARIES})
set_property(GLOBAL PROPERTY "USER-INTEL_SOURCES" "${USER-INTEL_SOURCES}")
set(USER-INTEL_SOURCES_DIR ${LAMMPS_SOURCE_DIR}/USER-INTEL)
set(USER-INTEL_SOURCES ${USER-INTEL_SOURCES_DIR}/intel_preprocess.h
${USER-INTEL_SOURCES_DIR}/intel_buffers.h
${USER-INTEL_SOURCES_DIR}/intel_buffers.cpp
${USER-INTEL_SOURCES_DIR}/math_extra_intel.h
${USER-INTEL_SOURCES_DIR}/nbin_intel.h
${USER-INTEL_SOURCES_DIR}/nbin_intel.cpp
${USER-INTEL_SOURCES_DIR}/npair_intel.h
${USER-INTEL_SOURCES_DIR}/npair_intel.cpp
${USER-INTEL_SOURCES_DIR}/intel_simd.h
${USER-INTEL_SOURCES_DIR}/intel_intrinsics.h)
# detect styles which have a USER-INTEL version
RegisterStylesExt(${USER-INTEL_SOURCES_DIR} intel USER-INTEL_SOURCES)
RegisterNBinStyle(${USER-INTEL_SOURCES_DIR}/nbin_intel.h)
RegisterNPairStyle(${USER-INTEL_SOURCES_DIR}/npair_intel.h)
RegisterFixStyle(${USER-INTEL_SOURCES_DIR}/fix_intel.h)
RegisterIntegrateStyle(${USER-INTEL_SOURCES_DIR}/verlet_lrt_intel.h)
set_property(GLOBAL PROPERTY "USER-INTEL_SOURCES" "${USER-INTEL_SOURCES}")
get_property(USER-INTEL_SOURCES GLOBAL PROPERTY USER-INTEL_SOURCES)
# detects styles which have USER-INTEL version
RegisterStylesExt(${USER-INTEL_SOURCES_DIR} opt USER-INTEL_SOURCES)
get_property(USER-INTEL_SOURCES GLOBAL PROPERTY USER-INTEL_SOURCES)
list(APPEND LIB_SOURCES ${USER-INTEL_SOURCES})
include_directories(${USER-INTEL_SOURCES_DIR})
list(APPEND LIB_SOURCES ${USER-INTEL_SOURCES})
include_directories(${USER-INTEL_SOURCES_DIR})
endif()
if(PKG_GPU)
@ -1169,6 +1277,10 @@ if(PKG_GPU)
message(FATAL_ERROR "Could not find bin2c, use -DBIN2C=/path/to/bin2c to help cmake finding it.")
endif()
option(CUDPP_OPT "Enable CUDPP_OPT" ON)
option(CUDA_MPS_SUPPORT "Enable tweaks to support CUDA Multi-process service (MPS)" OFF)
if(CUDA_MPS_SUPPORT)
set(GPU_CUDA_MPS_FLAGS "-DCUDA_PROXY")
endif()
set(GPU_ARCH "sm_30" CACHE STRING "LAMMPS GPU CUDA SM primary architecture (e.g. sm_60)")
@ -1232,7 +1344,7 @@ if(PKG_GPU)
add_library(gpu STATIC ${GPU_LIB_SOURCES} ${GPU_LIB_CUDPP_SOURCES} ${GPU_OBJS})
target_link_libraries(gpu ${CUDA_LIBRARIES} ${CUDA_CUDA_LIBRARY})
target_include_directories(gpu PRIVATE ${LAMMPS_LIB_BINARY_DIR}/gpu ${CUDA_INCLUDE_DIRS})
target_compile_definitions(gpu PRIVATE -D_${GPU_PREC_SETTING} -DMPI_GERYON -DUCL_NO_EXIT)
target_compile_definitions(gpu PRIVATE -D_${GPU_PREC_SETTING} -DMPI_GERYON -DUCL_NO_EXIT ${GPU_CUDA_MPS_FLAGS})
if(CUDPP_OPT)
target_include_directories(gpu PRIVATE ${LAMMPS_LIB_SOURCE_DIR}/gpu/cudpp_mini)
target_compile_definitions(gpu PRIVATE -DUSE_CUDPP)
@ -1258,7 +1370,15 @@ if(PKG_GPU)
set(OCL_COMMON_HEADERS ${LAMMPS_LIB_SOURCE_DIR}/gpu/lal_preprocessor.h ${LAMMPS_LIB_SOURCE_DIR}/gpu/lal_aux_fun1.h)
file(GLOB GPU_LIB_CU ${LAMMPS_LIB_SOURCE_DIR}/gpu/[^.]*.cu)
list(REMOVE_ITEM GPU_LIB_CU ${LAMMPS_LIB_SOURCE_DIR}/gpu/lal_gayberne.cu ${LAMMPS_LIB_SOURCE_DIR}/gpu/lal_gayberne_lj.cu)
list(REMOVE_ITEM GPU_LIB_CU
${LAMMPS_LIB_SOURCE_DIR}/gpu/lal_gayberne.cu
${LAMMPS_LIB_SOURCE_DIR}/gpu/lal_gayberne_lj.cu
${LAMMPS_LIB_SOURCE_DIR}/gpu/lal_re_squared.cu
${LAMMPS_LIB_SOURCE_DIR}/gpu/lal_re_squared_lj.cu
${LAMMPS_LIB_SOURCE_DIR}/gpu/lal_tersoff.cu
${LAMMPS_LIB_SOURCE_DIR}/gpu/lal_tersoff_zbl.cu
${LAMMPS_LIB_SOURCE_DIR}/gpu/lal_tersoff_mod.cu
)
foreach(GPU_KERNEL ${GPU_LIB_CU})
get_filename_component(basename ${GPU_KERNEL} NAME_WE)
@ -1269,7 +1389,21 @@ if(PKG_GPU)
GenerateOpenCLHeader(gayberne ${CMAKE_CURRENT_BINARY_DIR}/gpu/gayberne_cl.h ${OCL_COMMON_HEADERS} ${LAMMPS_LIB_SOURCE_DIR}/gpu/lal_ellipsoid_extra.h ${LAMMPS_LIB_SOURCE_DIR}/gpu/lal_gayberne.cu)
GenerateOpenCLHeader(gayberne_lj ${CMAKE_CURRENT_BINARY_DIR}/gpu/gayberne_lj_cl.h ${OCL_COMMON_HEADERS} ${LAMMPS_LIB_SOURCE_DIR}/gpu/lal_ellipsoid_extra.h ${LAMMPS_LIB_SOURCE_DIR}/gpu/lal_gayberne_lj.cu)
list(APPEND GPU_LIB_SOURCES ${CMAKE_CURRENT_BINARY_DIR}/gpu/gayberne_cl.h ${CMAKE_CURRENT_BINARY_DIR}/gpu/gayberne_lj_cl.h)
GenerateOpenCLHeader(re_squared ${CMAKE_CURRENT_BINARY_DIR}/gpu/re_squared_cl.h ${OCL_COMMON_HEADERS} ${LAMMPS_LIB_SOURCE_DIR}/gpu/lal_ellipsoid_extra.h ${LAMMPS_LIB_SOURCE_DIR}/gpu/lal_re_squared.cu)
GenerateOpenCLHeader(re_squared_lj ${CMAKE_CURRENT_BINARY_DIR}/gpu/re_squared_lj_cl.h ${OCL_COMMON_HEADERS} ${LAMMPS_LIB_SOURCE_DIR}/gpu/lal_ellipsoid_extra.h ${LAMMPS_LIB_SOURCE_DIR}/gpu/lal_re_squared_lj.cu)
GenerateOpenCLHeader(tersoff ${CMAKE_CURRENT_BINARY_DIR}/gpu/tersoff_cl.h ${OCL_COMMON_HEADERS} ${LAMMPS_LIB_SOURCE_DIR}/gpu/lal_tersoff_extra.h ${LAMMPS_LIB_SOURCE_DIR}/gpu/lal_tersoff.cu)
GenerateOpenCLHeader(tersoff_zbl ${CMAKE_CURRENT_BINARY_DIR}/gpu/tersoff_zbl_cl.h ${OCL_COMMON_HEADERS} ${LAMMPS_LIB_SOURCE_DIR}/gpu/lal_tersoff_zbl_extra.h ${LAMMPS_LIB_SOURCE_DIR}/gpu/lal_tersoff_zbl.cu)
GenerateOpenCLHeader(tersoff_mod ${CMAKE_CURRENT_BINARY_DIR}/gpu/tersoff_mod_cl.h ${OCL_COMMON_HEADERS} ${LAMMPS_LIB_SOURCE_DIR}/gpu/lal_tersoff_mod_extra.h ${LAMMPS_LIB_SOURCE_DIR}/gpu/lal_tersoff_mod.cu)
list(APPEND GPU_LIB_SOURCES
${CMAKE_CURRENT_BINARY_DIR}/gpu/gayberne_cl.h
${CMAKE_CURRENT_BINARY_DIR}/gpu/gayberne_lj_cl.h
${CMAKE_CURRENT_BINARY_DIR}/gpu/re_squared_cl.h
${CMAKE_CURRENT_BINARY_DIR}/gpu/re_squared_lj_cl.h
${CMAKE_CURRENT_BINARY_DIR}/gpu/tersoff_cl.h
${CMAKE_CURRENT_BINARY_DIR}/gpu/tersoff_zbl_cl.h
${CMAKE_CURRENT_BINARY_DIR}/gpu/tersoff_mod_cl.h
)
add_library(gpu STATIC ${GPU_LIB_SOURCES})
target_link_libraries(gpu ${OpenCL_LIBRARIES})
@ -1326,6 +1460,18 @@ message(STATUS "Generating lmpinstalledpkgs.h...")
file(WRITE "${LAMMPS_STYLE_HEADERS_DIR}/lmpinstalledpkgs.h.tmp" "${temp}" )
execute_process(COMMAND ${CMAKE_COMMAND} -E copy_if_different "${LAMMPS_STYLE_HEADERS_DIR}/lmpinstalledpkgs.h.tmp" "${LAMMPS_STYLE_HEADERS_DIR}/lmpinstalledpkgs.h")
######################################
# Generate lmpgitversion.h
######################################
add_custom_target(gitversion COMMAND ${CMAKE_COMMAND}
-DCMAKE_CURRENT_SOURCE_DIR="${CMAKE_CURRENT_SOURCE_DIR}"
-DGIT_EXECUTABLE="${GIT_EXECUTABLE}"
-DGIT_FOUND="${GIT_FOUND}"
-DLAMMPS_STYLE_HEADERS_DIR="${LAMMPS_STYLE_HEADERS_DIR}"
-P ${CMAKE_CURRENT_SOURCE_DIR}/Modules/generate_lmpgitversion.cmake)
set_property(DIRECTORY APPEND PROPERTY ADDITIONAL_MAKE_CLEAN_FILES ${LAMMPS_STYLE_HEADERS_DIR}/gitversion.h)
list(APPEND LAMMPS_DEPS gitversion)
###########################################
# Actually add executable and lib to build
############################################
@ -1370,9 +1516,19 @@ if(BUILD_EXE)
if(ENABLE_TESTING)
add_test(ShowHelp ${LAMMPS_BINARY} -help)
endif()
enable_language(C)
get_filename_component(MSI2LMP_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../tools/msi2lmp/src ABSOLUTE)
file(GLOB MSI2LMP_SOURCES ${MSI2LMP_SOURCE_DIR}/[^.]*.c)
add_executable(msi2lmp ${MSI2LMP_SOURCES})
target_link_libraries(msi2lmp m)
install(TARGETS msi2lmp DESTINATION ${CMAKE_INSTALL_BINDIR})
install(FILES ${LAMMPS_DOC_DIR}/msi2lmp.1 DESTINATION ${CMAKE_INSTALL_MANDIR}/man1)
endif()
###############################################################################
# Build documentation
###############################################################################
@ -1434,11 +1590,14 @@ if(BUILD_DOC)
endif()
###############################################################################
# Install potential files in data directory
# Install potential and force field files in data directory
###############################################################################
set(LAMMPS_POTENTIALS_DIR ${CMAKE_INSTALL_FULL_DATADIR}/lammps/potentials)
install(DIRECTORY ${LAMMPS_SOURCE_DIR}/../potentials/ DESTINATION ${LAMMPS_POTENTIALS_DIR})
set(LAMMPS_FRC_FILES_DIR ${CMAKE_INSTALL_FULL_DATADIR}/lammps/frc_files)
install(DIRECTORY ${LAMMPS_SOURCE_DIR}/../tools/msi2lmp/frc_files/ DESTINATION ${LAMMPS_FRC_FILES_DIR})
configure_file(etc/profile.d/lammps.sh.in ${CMAKE_BINARY_DIR}/etc/profile.d/lammps.sh @ONLY)
configure_file(etc/profile.d/lammps.csh.in ${CMAKE_BINARY_DIR}/etc/profile.d/lammps.csh @ONLY)
install(
@ -1447,6 +1606,49 @@ install(
DESTINATION ${CMAKE_INSTALL_SYSCONFDIR}/profile.d
)
###############################################################################
# Install LAMMPS lib and python module into site-packages folder with
# "install-python" target. Behaves exactly like "make install-python" for
# conventional build. Only available, if a shared library is built.
# This is primarily for people that only want to use the Python wrapper.
###############################################################################
if(BUILD_LIB AND BUILD_SHARED_LIBS)
find_package(PythonInterp)
if (PYTHONINTERP_FOUND)
add_custom_target(
install-python
${PYTHON_EXECUTABLE} install.py -v ${LAMMPS_SOURCE_DIR}/version.h
-m ${CMAKE_CURRENT_SOURCE_DIR}/../python/lammps.py
-l ${CMAKE_BINARY_DIR}/liblammps${CMAKE_SHARED_LIBRARY_SUFFIX}
WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/../python
COMMENT "Installing LAMMPS Python module")
else()
add_custom_target(
install-python
${CMAKE_COMMAND} -E echo "Must have Python installed to install the LAMMPS Python module")
endif()
else()
add_custom_target(
install-python
${CMAKE_COMMAND} -E echo "Must build LAMMPS as a shared library to use the Python module")
endif()
###############################################################################
# Add LAMMPS python module to "install" target. This is taylored for building
# LAMMPS for package managers and with different prefix settings.
# This requires either a shared library or that the PYTHON package is included.
###############################################################################
if((BUILD_LIB AND BUILD_SHARED_LIBS) OR (PKG_PYTHON))
find_package(PythonInterp)
if (PYTHONINTERP_FOUND)
execute_process(COMMAND ${PYTHON_EXECUTABLE}
-c "import distutils.sysconfig as cg; print(cg.get_python_lib(1,0,prefix='${CMAKE_INSTALL_PREFIX}'))"
OUTPUT_VARIABLE PYTHON_DEFAULT_INSTDIR OUTPUT_STRIP_TRAILING_WHITESPACE)
set(PYTHON_INSTDIR ${PYTHON_DEFAULT_INSTDIR} CACHE PATH "Installation folder for LAMMPS Python module")
install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/../python/lammps.py DESTINATION ${PYTHON_INSTDIR})
endif()
endif()
###############################################################################
# Testing
#

View File

@ -19,7 +19,7 @@
#
#
# Copyright (c) 2013--2018, Regents of the University of Minnesota.
# Copyright (c) 2013--2019, Regents of the University of Minnesota.
# All rights reserved.
#
# Contributors:
@ -28,23 +28,32 @@
# Ryan S. Elliott
#
# - Find KIM-API-V2
# - Find KIM-API
#
# sets standard pkg_check_modules variables plus:
#
# KIM-API-V2-CMAKE_C_COMPILER
# KIM-API-V2-CMAKE_CXX_COMPILER
# KIM-API-V2-CMAKE_Fortran_COMPILER
# KIM-API-CMAKE_C_COMPILER
# KIM-API-CMAKE_CXX_COMPILER
# KIM-API-CMAKE_Fortran_COMPILER
#
find_package(PkgConfig REQUIRED)
if(KIM-API_FIND_QUIETLY)
set(REQ_OR_QUI "QUIET")
else()
set(REQ_OR_QUI "REQUIRED")
endif()
find_package(PkgConfig ${REQ_OR_QUI})
include(FindPackageHandleStandardArgs)
pkg_check_modules(KIM-API-V2 REQUIRED libkim-api-v2>=2.0)
pkg_check_modules(KIM-API ${REQ_OR_QUI} libkim-api>=2.0)
pkg_get_variable(KIM-API-V2-CMAKE_C_COMPILER libkim-api-v2 CMAKE_C_COMPILER)
pkg_get_variable(KIM-API-V2-CMAKE_CXX_COMPILER libkim-api-v2 CMAKE_CXX_COMPILER)
pkg_get_variable(KIM-API-V2_CMAKE_Fortran_COMPILER libkim-api-v2 CMAKE_Fortran_COMPILER)
if(KIM-API_FOUND)
pkg_get_variable(KIM-API-CMAKE_C_COMPILER libkim-api CMAKE_C_COMPILER)
pkg_get_variable(KIM-API-CMAKE_CXX_COMPILER libkim-api CMAKE_CXX_COMPILER)
pkg_get_variable(KIM-API_CMAKE_Fortran_COMPILER libkim-api CMAKE_Fortran_COMPILER)
endif()
# handle the QUIETLY and REQUIRED arguments and set KIM-API-V2_FOUND to TRUE
# handle the QUIETLY and REQUIRED arguments and set KIM-API_FOUND to TRUE
# if all listed variables are TRUE
find_package_handle_standard_args(KIM-API-V2 REQUIRED_VARS KIM-API-V2_LIBRARIES)
find_package_handle_standard_args(KIM-API REQUIRED_VARS KIM-API_LIBRARIES)

View File

@ -6,7 +6,7 @@ function(GenerateOpenCLHeader varname outfile files)
foreach(IDX RANGE 2 ${ARG_END})
list(GET ARGV ${IDX} filename)
file(READ ${filename} content)
string(REGEX REPLACE "\\s*//[^\n]*\n" "" content "${content}")
string(REGEX REPLACE "\\s*//[^\n]*\n" "\n" content "${content}")
string(REGEX REPLACE "\\\\" "\\\\\\\\" content "${content}")
string(REGEX REPLACE "\"" "\\\\\"" content "${content}")
string(REGEX REPLACE "([^\n]+)\n" "\"\\1\\\\n\"\n" content "${content}")

View File

@ -91,6 +91,10 @@ function(RegisterFixStyle path)
AddStyleHeader(${path} FIX)
endfunction(RegisterFixStyle)
function(RegisterIntegrateStyle path)
AddStyleHeader(${path} INTEGRATE)
endfunction(RegisterIntegrateStyle)
function(RegisterStyles search_path)
FindStyleHeaders(${search_path} ANGLE_CLASS angle_ ANGLE ) # angle ) # force
FindStyleHeaders(${search_path} ATOM_CLASS atom_vec_ ATOM_VEC ) # atom ) # atom atom_vec_hybrid

View File

@ -0,0 +1,30 @@
set(temp "#ifndef LMP_GIT_VERSION_H\n#define LMP_GIT_VERSION_H\n")
set(temp_git_commit "(unknown)")
set(temp_git_branch "(unknown)")
set(temp_git_describe "(unknown)")
set(temp_git_info "false")
if(GIT_FOUND AND EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/../.git)
set(temp_git_info "true")
execute_process(COMMAND ${GIT_EXECUTABLE} -C ${CMAKE_CURRENT_SOURCE_DIR}/.. rev-parse HEAD
OUTPUT_VARIABLE temp_git_commit
ERROR_QUIET
OUTPUT_STRIP_TRAILING_WHITESPACE)
execute_process(COMMAND ${GIT_EXECUTABLE} -C ${CMAKE_CURRENT_SOURCE_DIR}/.. rev-parse --abbrev-ref HEAD
OUTPUT_VARIABLE temp_git_branch
ERROR_QUIET
OUTPUT_STRIP_TRAILING_WHITESPACE)
execute_process(COMMAND ${GIT_EXECUTABLE} -C ${CMAKE_CURRENT_SOURCE_DIR}/.. describe --dirty=-modified
OUTPUT_VARIABLE temp_git_describe
ERROR_QUIET
OUTPUT_STRIP_TRAILING_WHITESPACE)
endif()
set(temp "${temp}const bool LAMMPS_NS::LAMMPS::has_git_info = ${temp_git_info};\n")
set(temp "${temp}const char LAMMPS_NS::LAMMPS::git_commit[] = \"${temp_git_commit}\";\n")
set(temp "${temp}const char LAMMPS_NS::LAMMPS::git_branch[] = \"${temp_git_branch}\";\n")
set(temp "${temp}const char LAMMPS_NS::LAMMPS::git_descriptor[] = \"${temp_git_describe}\";\n")
set(temp "${temp}#endif\n\n")
message(STATUS "Generating lmpgitversion.h...")
file(WRITE "${LAMMPS_STYLE_HEADERS_DIR}/lmpgitversion.h.tmp" "${temp}" )
execute_process(COMMAND ${CMAKE_COMMAND} -E copy_if_different "${LAMMPS_STYLE_HEADERS_DIR}/lmpgitversion.h.tmp" "${LAMMPS_STYLE_HEADERS_DIR}/lmpgitversion.h")

View File

@ -155,11 +155,13 @@ make
The CMake build exposes a lot of different options. In the old build system
some of the package selections were possible by using special make target like
`make yes-std` or `make no-lib`. Achieving the same result with cmake requires
`make yes-std` or `make no-lib`. Achieving a similar result with cmake requires
specifying all options manually. This can quickly become a very long command
line that is hard to handle. While these could be stored in a simple script
file, there is another way of defining "presets" to compile LAMMPS in a certain
way.
way. Since the cmake build process - contrary to the conventional build system -
includes the compilation of the bundled libraries into the standard build process,
the grouping of those presets is somewhat different.
A preset is a regular CMake script file that can use constructs such as
variables, lists and for-loops to manipulate configuration options and create
@ -171,10 +173,10 @@ Such a file can then be passed to cmake via the `-C` flag. Several examples of
presets can be found in the `cmake/presets` folder.
```bash
# build LAMMPS with all "standard" packages which don't use libraries and enable GPU package
# build LAMMPS with all packages enabled which don't use external libraries and enable GPU package
mkdir build
cd build
cmake -C ../cmake/presets/std_nolib.cmake -D PKG_GPU=on ../cmake
cmake -C ../cmake/presets/all_on.cmake -C ../cmake/presets/nolib.cmake -D PKG_GPU=on ../cmake
```
# Reference
@ -209,7 +211,7 @@ cmake -C ../cmake/presets/std_nolib.cmake -D PKG_GPU=on ../cmake
</td>
</tr>
<tr>
<td><code><CMAKE_VERBOSE_MAKEFILE/code></td>
<td><code>CMAKE_VERBOSE_MAKEFILE</code></td>
<td>Enable verbose output from Makefile builds (useful for debugging), the same can be achived by adding `VERBOSE=1` to the `make` call.</td>
<td>
<dl>
@ -1429,6 +1431,17 @@ TODO
</dl>
</td>
</tr>
<tr>
<td><code>INTEL_LRT_MODE</code></td>
<td>How to support Long-range thread mode in Verlet integration</td>
<td>
<dl>
<dt><code>threads</code> (default, if pthreads available)</dt>
<dt><code>none</code> (default, if pthreads not available)</dt>
<dt><code>c++11</code></dt>
</dl>
</td>
</tr>
</tbody>
</table>
@ -1503,6 +1516,16 @@ target API.
</dl>
</td>
</tr>
<tr>
<td><code>CUDA_MPS_SUPPORT</code> (CUDA only)</td>
<td>Enable tweaks for running with Nvidia CUDA Multi-process services daemon</td>
<td>
<dl>
<dt><code>on</code></dt>
<dt><code>off</code> (default)</dt>
</dl>
</td>
</tr>
<tr>
<td><code>BIN2C</code> (CUDA only)</td>
<td>Path to bin2c executable, will automatically pick up the first one in your $PATH.</td>

View File

@ -1,2 +1,4 @@
# set environment for LAMMPS executables to find potential files
# set environment for LAMMPS and msi2lmp executables
# to find potential and force field files
if ( "$?LAMMPS_POTENTIALS" == 0 ) setenv LAMMPS_POTENTIALS @LAMMPS_POTENTIALS_DIR@
if ( "$?MSI2LMP_LIBRARY" == 0 ) setenv MSI2LMP_LIBRARY @LAMMPS_FRC_FILES_DIR@

View File

@ -1,2 +1,5 @@
# set environment for LAMMPS executables to find potential files
export LAMMPS_POTENTIALS=${LAMMPS_POTENTIALS-@LAMMPS_POTENTIALS_DIR@}
# set environment for LAMMPS and msi2lmp executables
# to find potential and force field files
LAMMPS_POTENTIALS=${LAMMPS_POTENTIALS-@LAMMPS_POTENTIALS_DIR@}
MSI2LMP_LIBRARY=${MSI2LMP_LIBRARY-@LAMMPS_FRC_FILES_DIR@}
export LAMMPS_POTENTIALS MSI2LMP_LIBRARY

View File

@ -1,21 +1,17 @@
set(STANDARD_PACKAGES ASPHERE BODY CLASS2 COLLOID COMPRESS CORESHELL DIPOLE GPU
GRANULAR KIM KOKKOS KSPACE LATTE MANYBODY MC MEAM MISC
MOLECULE MPIIO MSCG OPT PERI POEMS
PYTHON QEQ REAX REPLICA RIGID SHOCK SNAP SRD VORONOI)
# preset that turns on all existing packages off. can be used to reset
# an existing package selection without losing any other settings
set(USER_PACKAGES USER-ATC USER-AWPMD USER-BOCS USER-CGDNA USER-CGSDK USER-COLVARS
USER-DIFFRACTION USER-DPD USER-DRUDE USER-EFF USER-FEP USER-H5MD
USER-INTEL USER-LB USER-MANIFOLD USER-MEAMC USER-MESO
USER-MGPT USER-MISC USER-MOFFF USER-MOLFILE
USER-NETCDF USER-OMP USER-PHONON USER-QMMM USER-QTB
USER-QUIP USER-REAXC USER-SDPD USER-SMD USER-SMTBQ USER-SPH USER-TALLY
USER-UEF USER-VTK)
set(PACKAGES_WITH_LIB COMPRESS GPU KIM KOKKOS LATTE MEAM MPIIO MSCG POEMS PYTHON REAX VORONOI
USER-ATC USER-AWPMD USER-COLVARS USER-H5MD USER-LB USER-MOLFILE
USER-NETCDF USER-PLUMED USER-QMMM USER-QUIP USER-SMD USER-VTK)
set(ALL_PACKAGES ${STANDARD_PACKAGES} ${USER_PACKAGES})
set(ALL_PACKAGES ASPHERE BODY CLASS2 COLLOID COMPRESS CORESHELL DIPOLE GPU
GRANULAR KIM KOKKOS KSPACE LATTE MANYBODY MC MISC MESSAGE MOLECULE
MPIIO MSCG OPT PERI POEMS PYTHON QEQ REPLICA RIGID SHOCK SNAP SPIN
SRD VORONOI
USER-ADIOS USER-ATC USER-AWPMD USER-BOCS USER-CGDNA USER-CGSDK
USER-COLVARS USER-DIFFRACTION USER-DPD USER-DRUDE USER-EFF USER-FEP
USER-H5MD USER-INTEL USER-LB USER-MANIFOLD USER-MEAMC USER-MESO
USER-MGPT USER-MISC USER-MOFFF USER-MOLFILE USER-NETCDF USER-OMP
USER-PHONON USER-PLUMED USER-PTM USER-QMMM USER-QTB USER-QUIP
USER-REAXC USER-SCAFACOS USER-SDPD USER-SMD USER-SMTBQ USER-SPH
USER-TALLY USER-UEF USER-VTK USER-YAFF)
foreach(PKG ${ALL_PACKAGES})
set(PKG_${PKG} OFF CACHE BOOL "" FORCE)

View File

@ -1,21 +1,19 @@
set(STANDARD_PACKAGES ASPHERE BODY CLASS2 COLLOID COMPRESS CORESHELL DIPOLE GPU
GRANULAR KIM KOKKOS KSPACE LATTE MANYBODY MC MEAM MISC
MOLECULE MPIIO MSCG OPT PERI POEMS
PYTHON QEQ REAX REPLICA RIGID SHOCK SNAP SRD VORONOI)
# preset that turns on all existing packages. using the combination
# this preset followed by the nolib.cmake preset should configure a
# LAMMPS binary, with as many packages included, that can be compiled
# with just a working C++ compiler and an MPI library.
set(USER_PACKAGES USER-ATC USER-AWPMD USER-BOCS USER-CGDNA USER-CGSDK USER-COLVARS
USER-DIFFRACTION USER-DPD USER-DRUDE USER-EFF USER-FEP USER-H5MD
USER-INTEL USER-LB USER-MANIFOLD USER-MEAMC USER-MESO
USER-MGPT USER-MISC USER-MOFFF USER-MOLFILE
USER-NETCDF USER-OMP USER-PHONON USER-QMMM USER-QTB
USER-QUIP USER-REAXC USER-SDPD USER-SMD USER-SMTBQ USER-SPH USER-TALLY
USER-UEF USER-VTK)
set(PACKAGES_WITH_LIB COMPRESS GPU KIM KOKKOS LATTE MEAM MPIIO MSCG POEMS PYTHON REAX VORONOI
USER-ATC USER-AWPMD USER-COLVARS USER-H5MD USER-LB USER-MOLFILE
USER-NETCDF USER-PLUMED USER-QMMM USER-QUIP USER-SMD USER-VTK)
set(ALL_PACKAGES ${STANDARD_PACKAGES} ${USER_PACKAGES})
set(ALL_PACKAGES ASPHERE BODY CLASS2 COLLOID COMPRESS CORESHELL DIPOLE GPU
GRANULAR KIM KOKKOS KSPACE LATTE MANYBODY MC MISC MESSAGE MOLECULE
MPIIO MSCG OPT PERI POEMS PYTHON QEQ REPLICA RIGID SHOCK SNAP SPIN
SRD VORONOI
USER-ADIOS USER-ATC USER-AWPMD USER-BOCS USER-CGDNA USER-CGSDK
USER-COLVARS USER-DIFFRACTION USER-DPD USER-DRUDE USER-EFF USER-FEP
USER-H5MD USER-INTEL USER-LB USER-MANIFOLD USER-MEAMC USER-MESO
USER-MGPT USER-MISC USER-MOFFF USER-MOLFILE USER-NETCDF USER-OMP
USER-PHONON USER-PLUMED USER-PTM USER-QMMM USER-QTB USER-QUIP
USER-REAXC USER-SCAFACOS USER-SDPD USER-SMD USER-SMTBQ USER-SPH
USER-TALLY USER-UEF USER-VTK USER-YAFF)
foreach(PKG ${ALL_PACKAGES})
set(PKG_${PKG} ON CACHE BOOL "" FORCE)

17
cmake/presets/clang.cmake Normal file
View File

@ -0,0 +1,17 @@
# preset that will enable clang/clang++ with support for MPI and OpenMP (on Linux boxes)
set(CMAKE_CXX_COMPILER "clang++" CACHE STRING "" FORCE)
set(CMAKE_C_COMPILER "clang" CACHE STRING "" FORCE)
set(CMAKE_CXX_FLAGS "-Wall -Wextra -g -O2 -DNDEBG" CACHE STRING "" FORCE)
set(MPI_CXX "clang++" CACHE STRING "" FORCE)
set(MPI_CXX_COMPILER "mpicxx" CACHE STRING "" FORCE)
unset(HAVE_OMP_H_INCLUDE CACHE)
set(OpenMP_C "clang" CACHE STRING "" FORCE)
set(OpenMP_C_FLAGS "-fopenmp" CACHE STRING "" FORCE)
set(OpenMP_C_LIB_NAMES "omp" CACHE STRING "" FORCE)
set(OpenMP_CXX "clang++" CACHE STRING "" FORCE)
set(OpenMP_CXX_FLAGS "-fopenmp" CACHE STRING "" FORCE)
set(OpenMP_CXX_LIB_NAMES "omp" CACHE STRING "" FORCE)
set(OpenMP_omp_LIBRARY "/usr/lib64/libomp.so" CACHE PATH "" FORCE)

View File

@ -1,71 +0,0 @@
set(PKG_ASPHERE OFF CACHE BOOL "" FORCE)
set(PKG_BODY OFF CACHE BOOL "" FORCE)
set(PKG_CLASS2 OFF CACHE BOOL "" FORCE)
set(PKG_COLLOID OFF CACHE BOOL "" FORCE)
set(PKG_COMPRESS OFF CACHE BOOL "" FORCE)
set(PKG_CORESHELL OFF CACHE BOOL "" FORCE)
set(PKG_DIPOLE OFF CACHE BOOL "" FORCE)
set(PKG_GPU OFF CACHE BOOL "" FORCE)
set(PKG_GRANULAR OFF CACHE BOOL "" FORCE)
set(PKG_KIM OFF CACHE BOOL "" FORCE)
set(PKG_KOKKOS OFF CACHE BOOL "" FORCE)
set(PKG_KSPACE OFF CACHE BOOL "" FORCE)
set(PKG_LATTE OFF CACHE BOOL "" FORCE)
set(PKG_LIB OFF CACHE BOOL "" FORCE)
set(PKG_MANYBODY OFF CACHE BOOL "" FORCE)
set(PKG_MC OFF CACHE BOOL "" FORCE)
set(PKG_MEAM OFF CACHE BOOL "" FORCE)
set(PKG_MISC OFF CACHE BOOL "" FORCE)
set(PKG_MOLECULE OFF CACHE BOOL "" FORCE)
set(PKG_MPIIO OFF CACHE BOOL "" FORCE)
set(PKG_MSCG OFF CACHE BOOL "" FORCE)
set(PKG_OPT OFF CACHE BOOL "" FORCE)
set(PKG_PERI OFF CACHE BOOL "" FORCE)
set(PKG_POEMS OFF CACHE BOOL "" FORCE)
set(PKG_PYTHOFF OFF CACHE BOOL "" FORCE)
set(PKG_QEQ OFF CACHE BOOL "" FORCE)
set(PKG_REAX OFF CACHE BOOL "" FORCE)
set(PKG_REPLICA OFF CACHE BOOL "" FORCE)
set(PKG_RIGID OFF CACHE BOOL "" FORCE)
set(PKG_SHOCK OFF CACHE BOOL "" FORCE)
set(PKG_SNAP OFF CACHE BOOL "" FORCE)
set(PKG_SRD OFF CACHE BOOL "" FORCE)
set(PKG_VOROFFOI OFF CACHE BOOL "" FORCE)
set(PKG_USER OFF CACHE BOOL "" FORCE)
set(PKG_USER-ATC OFF CACHE BOOL "" FORCE)
set(PKG_USER-AWPMD OFF CACHE BOOL "" FORCE)
set(PKG_USER-BOCS OFF CACHE BOOL "" FORCE)
set(PKG_USER-CGDNA OFF CACHE BOOL "" FORCE)
set(PKG_USER-CGSDK OFF CACHE BOOL "" FORCE)
set(PKG_USER-COLVARS OFF CACHE BOOL "" FORCE)
set(PKG_USER-DIFFRACTIOFF OFF CACHE BOOL "" FORCE)
set(PKG_USER-DPD OFF CACHE BOOL "" FORCE)
set(PKG_USER-DRUDE OFF CACHE BOOL "" FORCE)
set(PKG_USER-EFF OFF CACHE BOOL "" FORCE)
set(PKG_USER-FEP OFF CACHE BOOL "" FORCE)
set(PKG_USER-H5MD OFF CACHE BOOL "" FORCE)
set(PKG_USER-INTEL OFF CACHE BOOL "" FORCE)
set(PKG_USER-LB OFF CACHE BOOL "" FORCE)
set(PKG_USER-MANIFOLD OFF CACHE BOOL "" FORCE)
set(PKG_USER-MEAMC OFF CACHE BOOL "" FORCE)
set(PKG_USER-MESO OFF CACHE BOOL "" FORCE)
set(PKG_USER-MGPT OFF CACHE BOOL "" FORCE)
set(PKG_USER-MISC OFF CACHE BOOL "" FORCE)
set(PKG_USER-MOFFF OFF CACHE BOOL "" FORCE)
set(PKG_USER-MOLFILE OFF CACHE BOOL "" FORCE)
set(PKG_USER-NETCDF OFF CACHE BOOL "" FORCE)
set(PKG_USER-OMP OFF CACHE BOOL "" FORCE)
set(PKG_USER-PHONON OFF CACHE BOOL "" FORCE)
set(PKG_USER-PLUMED OFF CACHE BOOL "" FORCE)
set(PKG_USER-QMMM OFF CACHE BOOL "" FORCE)
set(PKG_USER-QTB OFF CACHE BOOL "" FORCE)
set(PKG_USER-QUIP OFF CACHE BOOL "" FORCE)
set(PKG_USER-REAXC OFF CACHE BOOL "" FORCE)
set(PKG_USER-SDPD OFF CACHE BOOL "" FORCE)
set(PKG_USER-SMD OFF CACHE BOOL "" FORCE)
set(PKG_USER-SMTBQ OFF CACHE BOOL "" FORCE)
set(PKG_USER-SPH OFF CACHE BOOL "" FORCE)
set(PKG_USER-TALLY OFF CACHE BOOL "" FORCE)
set(PKG_USER-UEF OFF CACHE BOOL "" FORCE)
set(PKG_USER-VTK OFF CACHE BOOL "" FORCE)

View File

@ -0,0 +1,17 @@
set(WIN_PACKAGES ASPHERE BODY CLASS2 COLLOID COMPRESS CORESHELL DIPOLE GPU
GRANULAR KSPACE MANYBODY MC MISC MOLECULE OPT PERI POEMS QEQ
REPLICA RIGID SHOCK SNAP SPIN SRD VORONOI USER-ATC USER-AWPMD
USER-BOCS USER-CGDNA USER-CGSDK USER-COLVARS USER-DIFFRACTION
USER-DPD USER-DRUDE USER-EFF USER-FEP USER-INTEL USER-MANIFOLD
USER-MEAMC USER-MESO USER-MISC USER-MOFFF USER-MOLFILE USER-OMP
USER-PHONON USER-PTM USER-QTB USER-REAXC USER-SDPD USER-SMD
USER-SMTBQ USER-SPH USER-TALLY USER-UEF USER-YAFF)
foreach(PKG ${WIN_PACKAGES})
set(PKG_${PKG} ON CACHE BOOL "" FORCE)
endforeach()
set(DOWNLOAD_VORO ON CACHE BOOL "" FORCE)
set(DOWNLOAD_EIGEN3 ON CACHE BOOL "" FORCE)
set(LAMMPS_MEMALIGN "0" CACHE STRING "" FORCE)
set(INTEL_LRT_MODE "none" CACHE STRING "" FORCE)

View File

@ -0,0 +1,8 @@
# preset that turns on just a few, frequently used packages
# this will be compiled quickly and handle a lot of common inputs.
set(ALL_PACKAGES KSPACE MANYBODY MOLECULE RIGID)
foreach(PKG ${ALL_PACKAGES})
set(PKG_${PKG} ON CACHE BOOL "" FORCE)
endforeach()

15
cmake/presets/most.cmake Normal file
View File

@ -0,0 +1,15 @@
# preset that turns on a wide range of packages, some of which require
# external libraries. Compared to all_on.cmake some more unusual packages
# are removed. The resulting binary should be able to run most inputs.
set(ALL_PACKAGES ASPHERE CLASS2 COLLOID CORESHELL DIPOLE
GRANULAR KSPACE MANYBODY MC MISC MOLECULE OPT PERI
PYTHON QEQ REPLICA RIGID SHOCK SRD VORONOI
USER-CGDNA USER-CGSDK USER-COLVARS USER-DIFFRACTION USER-DPD
USER-DRUDE USER-FEP USER-MEAMC USER-MESO
USER-MISC USER-MOFFF USER-OMP USER-PLUMED USER-PHONON USER-REAXC
USER-SPH USER-SMD USER-UEF USER-YAFF)
foreach(PKG ${ALL_PACKAGES})
set(PKG_${PKG} ON CACHE BOOL "" FORCE)
endforeach()

View File

@ -1,21 +1,10 @@
set(STANDARD_PACKAGES ASPHERE BODY CLASS2 COLLOID COMPRESS CORESHELL DIPOLE GPU
GRANULAR KIM KOKKOS KSPACE LATTE MANYBODY MC MEAM MISC
MOLECULE MPIIO MSCG OPT PERI POEMS
PYTHON QEQ REAX REPLICA RIGID SHOCK SNAP SRD VORONOI)
# preset that turns off all packages that require some form of external
# library or special compiler (fortran or cuda) or equivalent.
set(USER_PACKAGES USER-ATC USER-AWPMD USER-BOCS USER-CGDNA USER-CGSDK USER-COLVARS
USER-DIFFRACTION USER-DPD USER-DRUDE USER-EFF USER-FEP USER-H5MD
USER-INTEL USER-LB USER-MANIFOLD USER-MEAMC USER-MESO
USER-MGPT USER-MISC USER-MOFFF USER-MOLFILE
USER-NETCDF USER-OMP USER-PHONON USER-QMMM USER-QTB
USER-QUIP USER-REAXC USER-SDPD USER-SMD USER-SMTBQ USER-SPH USER-TALLY
USER-UEF USER-VTK)
set(PACKAGES_WITH_LIB COMPRESS GPU KIM KOKKOS LATTE MEAM MPIIO MSCG POEMS PYTHON REAX VORONOI
USER-ATC USER-AWPMD USER-COLVARS USER-H5MD USER-LB USER-MOLFILE
USER-NETCDF USER-PLUMED USER-QMMM USER-QUIP USER-SMD USER-VTK)
set(ALL_PACKAGES ${STANDARD_PACKAGES} ${USER_PACKAGES})
set(PACKAGES_WITH_LIB COMPRESS GPU KIM KOKKOS LATTE MPIIO MSCG PYTHON
VORONOI USER-ADIOS USER-ATC USER-AWPMD USER-H5MD USER-LB
USER-MOLFILE USER-NETCDF USER-PLUMED USER-QMMM USER-QUIP
USER-SCAFACOS USER-SMD USER-VTK)
foreach(PKG ${PACKAGES_WITH_LIB})
set(PKG_${PKG} OFF CACHE BOOL "" FORCE)

View File

@ -1,22 +0,0 @@
set(STANDARD_PACKAGES ASPHERE BODY CLASS2 COLLOID COMPRESS CORESHELL DIPOLE GPU
GRANULAR KIM KOKKOS KSPACE LATTE MANYBODY MC MEAM MISC
MOLECULE MPIIO MSCG OPT PERI POEMS
PYTHON QEQ REAX REPLICA RIGID SHOCK SNAP SRD VORONOI)
set(USER_PACKAGES USER-ATC USER-AWPMD USER-BOCS USER-CGDNA USER-CGSDK USER-COLVARS
USER-DIFFRACTION USER-DPD USER-DRUDE USER-EFF USER-FEP USER-H5MD
USER-INTEL USER-LB USER-MANIFOLD USER-MEAMC USER-MESO
USER-MGPT USER-MISC USER-MOFFF USER-MOLFILE
USER-NETCDF USER-OMP USER-PHONON USER-QMMM USER-QTB
USER-QUIP USER-REAXC USER-SDPD USER-SMD USER-SMTBQ USER-SPH USER-TALLY
USER-UEF USER-VTK)
set(PACKAGES_WITH_LIB COMPRESS GPU KIM KOKKOS LATTE MEAM MPIIO MSCG POEMS PYTHON REAX VORONOI
USER-ATC USER-AWPMD USER-COLVARS USER-H5MD USER-LB USER-MOLFILE
USER-NETCDF USER-QMMM USER-QUIP USER-SMD USER-VTK)
set(ALL_PACKAGES ${STANDARD_PACKAGES} ${USER_PACKAGES})
foreach(PKG ${STANDARD_PACKAGES})
set(PKG_${PKG} ON CACHE BOOL "" FORCE)
endforeach()

View File

@ -1,26 +0,0 @@
set(STANDARD_PACKAGES ASPHERE BODY CLASS2 COLLOID COMPRESS CORESHELL DIPOLE GPU
GRANULAR KIM KOKKOS KSPACE LATTE MANYBODY MC MEAM MISC
MOLECULE MPIIO MSCG OPT PERI POEMS
PYTHON QEQ REAX REPLICA RIGID SHOCK SNAP SRD VORONOI)
set(USER_PACKAGES USER-ATC USER-AWPMD USER-BOCS USER-CGDNA USER-CGSDK USER-COLVARS
USER-DIFFRACTION USER-DPD USER-DRUDE USER-EFF USER-FEP USER-H5MD
USER-INTEL USER-LB USER-MANIFOLD USER-MEAMC USER-MESO
USER-MGPT USER-MISC USER-MOFFF USER-MOLFILE
USER-NETCDF USER-OMP USER-PHONON USER-QMMM USER-QTB
USER-QUIP USER-REAXC USER-SDPD USER-SMD USER-SMTBQ USER-SPH USER-TALLY
USER-UEF USER-VTK)
set(PACKAGES_WITH_LIB COMPRESS GPU KIM KOKKOS LATTE MEAM MPIIO MSCG POEMS PYTHON REAX VORONOI
USER-ATC USER-AWPMD USER-COLVARS USER-H5MD USER-LB USER-MOLFILE
USER-NETCDF USER-QMMM USER-QUIP USER-SMD USER-VTK)
set(ALL_PACKAGES ${STANDARD_PACKAGES} ${USER_PACKAGES})
foreach(PKG ${STANDARD_PACKAGES})
set(PKG_${PKG} ON CACHE BOOL "" FORCE)
endforeach()
foreach(PKG ${PACKAGES_WITH_LIB})
set(PKG_${PKG} OFF CACHE BOOL "" FORCE)
endforeach()

View File

@ -1,22 +0,0 @@
set(STANDARD_PACKAGES ASPHERE BODY CLASS2 COLLOID COMPRESS CORESHELL DIPOLE GPU
GRANULAR KIM KOKKOS KSPACE LATTE MANYBODY MC MEAM MISC
MOLECULE MPIIO MSCG OPT PERI POEMS
PYTHON QEQ REAX REPLICA RIGID SHOCK SNAP SRD VORONOI)
set(USER_PACKAGES USER-ATC USER-AWPMD USER-BOCS USER-CGDNA USER-CGSDK USER-COLVARS
USER-DIFFRACTION USER-DPD USER-DRUDE USER-EFF USER-FEP USER-H5MD
USER-INTEL USER-LB USER-MANIFOLD USER-MEAMC USER-MESO
USER-MGPT USER-MISC USER-MOFFF USER-MOLFILE
USER-NETCDF USER-OMP USER-PHONON USER-QMMM USER-QTB
USER-QUIP USER-REAXC USER-SDPD USER-SMD USER-SMTBQ USER-SPH USER-TALLY
USER-UEF USER-VTK)
set(PACKAGES_WITH_LIB COMPRESS GPU KIM KOKKOS LATTE MEAM MPIIO MSCG POEMS PYTHON REAX VORONOI
USER-ATC USER-AWPMD USER-COLVARS USER-H5MD USER-LB USER-MOLFILE
USER-NETCDF USER-PLUMED USER-QMMM USER-QUIP USER-SMD USER-VTK)
set(ALL_PACKAGES ${STANDARD_PACKAGES} ${USER_PACKAGES})
foreach(PKG ${USER_PACKAGES})
set(PKG_${PKG} ON CACHE BOOL "" FORCE)
endforeach()

View File

@ -116,6 +116,13 @@ mobi: epub
@echo "Conversion finished. The MOBI manual file is created."
pdf: $(OBJECTS) $(ANCHORCHECK)
@(\
cd src/Developer; \
pdflatex developer; \
pdflatex developer; \
mv developer.pdf ../../Developer.pdf; \
cd ../../; \
)
@(\
. $(VENV)/bin/activate ;\
cp -r src/* $(RSTDIR)/ ;\
@ -135,14 +142,7 @@ pdf: $(OBJECTS) $(ANCHORCHECK)
make && \
make && \
mv LAMMPS.pdf ../Manual.pdf && \
cd ../;
@(\
cd src/Developer; \
pdflatex developer; \
pdflatex developer; \
mv developer.pdf ../../Developer.pdf; \
cd ../../; \
)
cd ../;
@rm -rf latex/_sources
@rm -rf latex/PDF
@rm -rf latex/USER
@ -211,7 +211,7 @@ $(VENV):
@( \
$(VIRTUALENV) -p $(PYTHON) $(VENV); \
. $(VENV)/bin/activate; \
pip install Sphinx; \
pip install Sphinx==1.7.6; \
deactivate;\
)

View File

@ -1,40 +1,259 @@
.TH LAMMPS "2018-08-22"
.TH LAMMPS "30 April 2019" "2019-04-30"
.SH NAME
.B LAMMPS
\- Molecular Dynamics Simulator.
.SH SYNOPSIS
.B lmp
-in in.file
.B lmp
\-in <input file> [OPTIONS] ...
or
mpirun \-np 2
.B lmp
-in in.file
mpirun \-np 2
.B lmp
<input file> [OPTIONS] ...
or
.B lmp
\-r2data file.restart file.data
.SH DESCRIPTION
.B LAMMPS
LAMMPS is a classical molecular dynamics code, and an acronym for Large-scale
Atomic/Molecular Massively Parallel Simulator. LAMMPS has potentials for soft
materials (biomolecules, polymers) and solid-state materials (metals,
semiconductors) and coarse-grained or mesoscopic systems. It can be used to
model atoms or, more generically, as a parallel particle simulator at the
.B LAMMPS
is a classical molecular dynamics code, and an acronym for \fBL\fRarge-scale
\fBA\fRtomic/\fBM\fRolecular \fBM\fRassively \fBP\fRarallel \fBS\fRimulator.
.B LAMMPS
has potentials for soft
materials (bio-molecules, polymers) and solid-state materials (metals,
semiconductors) and coarse-grained or mesoscopic systems. It can be used to
model atoms or, more generically, as a parallel particle simulator at the
atomic, meso, or continuum scale.
See http://lammps.sandia.gov/ for documentation.
See https://lammps.sandia.gov/ for more information and documentation.
.SH EXECUTABLE NAME
The
.B LAMMPS
executable can have different names depending on how it was configured,
compiled and installed. It will be either
.B lmp
or
.B lmp_<machine name>.
The <machine name> suffix corresponds to the (machine specific) makefile
used to compile
.B LAMMPS
when using the conventional build process. When building
.B LAMMPS
using
.B CMake
this <machine name> parameter can be chosen arbitrarily at configuration
time, but more common is to just use
.B lmp
without a suffix. In this manpage we will use
.B lmp
to represent any of those names.
.SH OPTIONS
See https://lammps.sandia.gov/doc/Run_options.html for details on
command-line options.
.SH COPYRIGHT
© 2003--2018 Sandia Corporation
.TP
\fB\-h\fR or \fB\-help\fR
Print a brief help summary and a list of settings and options compiled
into this executable. It also explicitly lists all LAMMPS styles
(atom_style, fix, compute, pair_style, bond_style, etc) available in
the specific executable. This can tell you if the command you want to
use was included via the appropriate package at compile time.
LAMMPS will print the info and immediately exit if this switch is used.
.TP
\fB\-e\fR or \fB\-echo\fR
Set the style of command echoing. The style can be
.B none
or
.B screen
or
.B log
or
.B both.
Depending on the style, each command read from the input script will
be echoed to the screen and/or logfile. This can be useful to figure
out which line of your script is causing an input error.
The default value is
.B log.
.TP
\fB\-i <input file>\fR or \fB\-in <input file>\fR
Specify a file to use as an input script. If it is not specified,
LAMMPS reads its script from standard input. This is a required
switch when running LAMMPS in multi-partition mode.
.TP
\fB\-k on/off [keyword value]\fR or \fB\-kokkos on/off [keyword value]\fR
Enable or disable general KOKKOS support, as provided by the KOKKOS
package. Even if LAMMPS is built with this package, this switch must
be set to \fBon\fR to enable running with KOKKOS-enabled styles. More
details on this switch and its optional keyword value pairs are discussed
at: https://lammps.sandia.gov/doc/Run_options.html
.TP
\fB\-l <log file>\fR or \fB\-log <log file>\fR
Specify a log file for LAMMPS to write status information to.
The default value is "log.lammps". If the file name "none" is used,
\fBLAMMPS\fR will not write a log file. In multi-partition mode only
some high-level all-partition information is written to the "<log file>"
file, the remainder is written in a per-partition file "<log file>.N"
with "N" being the respective partition number, unless overridden
by the \-plog flag (see below).
.TP
\fB\-m <number>\fR or \fB\-mpicolor <number>\fR
If used, this must be the first command-line argument after the
.B LAMMPS
executable name. It is only used when
.B LAMMPS
is launched by an mpirun command which also launches one or more
other executable(s) at the same time.
.B LAMMPS
and the other executable(s) perform an MPI_Comm_split(), each with
their own different colors, to split the MPI_COMM_WORLD communicator
for each executable to the subset of processors they are supposed to
be actually running on. Currently, this is only used in
.B LAMMPS
to perform client/server messaging with another application.
.B LAMMPS
can act as either a client or server (or both).
.TP
\fB\-nc\fR or \fB\-nocite\fR
Disable writing the "log.cite" file which is normally written to
list references for specific cite-able features used during a
.B LAMMPS
run.
.TP
\fB\-pk <style> [options]\fR or \fB\-package <style> [options]\fR
Invoke the \fBpackage\R command with <style> and optional arguments.
The syntax is the same as if the command appeared in an input script.
For example "-pk gpu 2" is the same as "package gpu 2" in the input
script. The possible styles and options are discussed in the
.B LAMMPS
manual for the "package" command. This switch can be used multiple
times, e.g. to set options for the USER-INTEL and USER-OMP packages
when used together. Along with the "-sf" or "-suffix" switch, this
is a convenient mechanism for invoking accelerator packages and their
options without having to edit an input script.
.TP
\fB\-p\fR or \fB\-partition\fR
Invoke
.B LAMMPS
in multi-partition mode. Without this,
.B LAMMPS
uses all P processors allocated via MPI to run a single simulation.
If this switch is used, the P processors are split into separate
partitions and each partition runs its own simulation. The arguments
to the switch specify the number of processors in each partition.
Arguments of the form "MxN" mean M partitions, each with N processors.
Arguments of the form "N" mean a single partition with N processors.
The sum of processors in all partitions must be equal P. Thus the
command “-partition 8x2 4 5” has 10 partitions and runs on a total
of 25 processors. Running with multiple partitions is required for
multi-replica simulations, where each replica runs on on one or more
few processors.
.TP
\fB\-pl <basename>\fR or \fB\-plog <basename>\fR
Specify the base name for the per-partition log files in multi-partition
runs, where partition N writes log information to <basename>.N.
If basename is set to "none", then no per-partition log files are created.
This overrides the name specified in the \-log command-line option.
.TP
\fB\-ps <basename>\fR or \fB\-pscreen <basename>\fR
Specify the base name for the per-partition screen files in multi-partition
runs, where partition N writes screen output to <basename>.N.
If basename is set to "none", then no per-partition screen files are created.
The default value is "screen" or whatever is set by the \-screen flag.
.TP
\fB\-r2data <restart file> [remap] <data file>\fR or
\fB\-restart2data <restart file> [remap] <data file>\fR
Convert <restart file> previously written by
.B LAMMPS
into a data file and immediately exit. This option has replaced the
external restart2data executable. Following <restart file>
argument, the optional word "remap" may be used. This has the
same effect like adding it to a "read_restart" command.
The syntax following the <data file> name is identical to the
arguments of the "write_data" command. See the
.B LAMMPS
manual for details on either of the two commands.
.TP
\fB\-r2dump <restart file> [remap] <dump file>\fR or
\fB\-restart2dump <restart file> [remap] <dump file>\fR
Convert <restart file> previously written by
.B LAMMPS
into a dump file and immediately exit. Following <restart file>
argument, the optional word "remap" may be used. This has the
same effect like adding it to a "read_restart" command.
The syntax following the <dump file> name is identical to the
arguments of the "dump" command. See the
.B LAMMPS
manual for details on either of the two commands.
.TP
\fB\-sc <file name>\fR or \fB\-screen <file name>\fR
Specify a file for
.B LAMMPS
to write its screen information to. By default, this will be
the standard output. If <file name> is "none", (most) screen
output will be suppressed. In multi-partition mode only
some high-level all-partition information is written to the
screen or "<file name>" file, the remainder is written in a
per-partition file "screen.N" or "<file name>.N"
with "N" being the respective partition number, and unless
overridden by the \-pscreen flag (see above).
.TP
\fB\-sf <suffix>\fR or \fB\-suffix <suffix>\fR
Use variants of various styles in the input, if they exist. This is
achieved by transparently trying to convert a style named <my/style>
into <my/style/suffix> if that latter style exists, but otherwise
fall back to the former. The most useful suffixes are "gpu",
"intel", "kk", "omp", "opt", or "hybrid". These refer to styles from
optional packages that LAMMPS can be built with. The hybrid suffix is
special, as it enables, having two suffixes tried (e.g. first "intel"
and then "omp") and thus requires two arguments. Along with the
"-package" command-line switch, this is a convenient mechanism for
invoking styles from accelerator packages and setting their options
without having to edit an input script.
See https://lammps.sandia.gov/doc/Run_options.html for additional
details and discussions on command-line options.
.SH LAMMPS BASICS
LAMMPS executes by reading commands from a input script (text file),
one line at a time. When the input script ends, LAMMPS exits. Each
command causes LAMMPS to take some action. It may set or change an
internal, read and parse a file, or run a simulation. Most commands
have default settings, which means you only need to use the command
if you wish to change the default.
The ordering of commands in an input script is usually not very important
unless a command like "run" is encountered, which starts some calculation
using the current internal state. Also, if a "pair_style" or "bond_style"
other similar style command is issued that has a different name from what
was previously active, it will replace the previous style and wipe out
all corresponding "pair_coeff" or "bond_coeff" or equivalent settings.
Some commands are only valid when they follow other commands. For
example you cannot set the temperature of a group of atoms until atoms
have been defined and a group command is used to define which atoms
belong to the group of a given name. Sometimes command B will use values
that can be set by command A. This means command A must precede command
B in the input to have the desired effect. Some commands must be issued
.B before
the simulation box is defined and others can only be issued
.B after.
Many input script errors are detected by
.B LAMMPS
and an ERROR or WARNING message is printed. The documentation for
each command lists restrictions on how the command can be used, and
the chapter on errors in the
.B LAMMPS
manual gives some additional information about error messages, if possible.
.SH COPYRIGHT
© 2003--2019 Sandia Corporation
This package is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
it under the terms of the GNU General Public License version 2 as
published by the Free Software Foundation.
This package is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of

111
doc/msi2lmp.1 Normal file
View File

@ -0,0 +1,111 @@
.TH MSI2LMP "v3.9.9" "2018-11-05"
.SH NAME
.B MSI2LMP
\- Converter for Materials Studio files to LAMMPS
.SH SYNOPSIS
.B msi2lmp
<ROOTNAME> [-class <I|1|II|2|O|0>] [-frc <path to frc file>] [-print #] [-ignore] [-nocenter] [-oldstyle] [-shift <x> <y> <z>]
.SH DESCRIPTION
.PP
.B MSI2LMP
is a tool bundled with LAMMPS to aide in the conversion of simulation
inputs from Biovia's Materials Studio software for use with LAMMPS.
It is a standalone program that generates a LAMMPS data file based on
the information in an MS .car file (atom coordinates), an .mdf file
(molecular topology and atom types) and an .frc (forcefield parameters)
file. The .car and .mdf files are specific to a molecular system while
the .frc file is specific to a forcefield (variant). The only coherency
needed between .frc and .car/.mdf files are the atom types.
.PP
.SH OPTIONS
.TP
\fB\<ROOTNAME>\fR
This has to be the first argument and is a
.B mandatory
argument. It defines the root of the file names; i.e. for a
.B <ROOTNAME>
of benzene, you have to provide the files 'benzene.car' and 'benzene.mdf'
in the current working directory.
.B msi2lmp
will then read and process those files according to its remaining settings.
All other settins are optional and have defaults as listed.
.TP
\fB\-c <I,1,II,2,O,0>\fR, \fB\-class <I,1,II,2,O,0>\fR
The \-c or \-class option selects the force field class, i.e which pair
styles and bond styles and so on are required in the LAMMPS input file.
Class I or class 1 uses similar combination of functional forms as Amber
and Charmm force field and support the force fields
.B cvff
and
.B clayff.
Class II or class 2 corresponds to the more complex force fields
.B COMPASS
and
.B pcff.
Class O or class 0 finally is an experimental and incomplete extension
and supports generating output for
.B OPLS-AA
.TP
\fB\-f <ffname>\fR, \fB\-frc <ffname>\fR
The \-c or \-frc option allows the selection of the force field parameter
file
.B<ffname>.frc.
Valid names for <ffname> with this distribution are: cvff, clayff, cvff_aug,
pcff, compass_published, cff91, and oplsaa. If the argument is a pathname,
i.e. it starts with a '.' or a '/', then this absolute path is used to read
the force field, otherwise
.B msi2lmp
will look in the folder pointed to by the environment variable
$MSI2LMP_LIBRARY. If the variable is not set, then it will look in the current
directory. The extension '.frc' is appended, if missing.
Default is to look for the cvff.frc force field file.
.TP
\fB\-p <loglevel>\fR, \fB\-print <loglevel>\fR,
Selects the amount of information messages about the progress of the
conversion printed to the screen.
.B <loglevel>
can be a number from 0 (silent except for errors) to 3 (very detailed).
.TP
\fB\-i\fR, \fB\-ignore\fR,
Ignore errors about missing parameters and use 0.0 for the respective
force constants making these no-ops. Is correct to be used for a few
molecules and settings, but often an indication, that either the atom
type assignment have errors, or the force field file is missing entries.
.TP
\fB\-n\fR, \fB\-nocenter\fR,
Do not center the box around the (geometrical) center of the atoms,
but around the origin. Default is to recenter.
.TP
\fB\-o\fR, \fB\-oldstyle\fR,
Write out a data file without style hint comments to be compatible
with old LAMMPS versions. Default is to write out those comments.
.TP
\fB-s <x> <y> <z>\fR, \fB-shift <x> <y> <z>\fR,
Shift the entire system (box and coordinates) by a vector
(default: 0.0 0.0 0.0).
.TP
.SH EXAMPLES
msi2lmp benzene -c 2 -p 1 -f ../frc_files/pcff.frc
msi2lmp benzene-class1 -c I
msi2lmp decane -c 0 -f oplsaa
.SH COPYRIGHT
© 2003--2019 Sandia Corporation
This package is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License version 2 as
published by the Free Software Foundation.
This package is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

View File

@ -28,7 +28,7 @@ Makefile(s). Example:
cd lammps # change to the LAMMPS distribution directory
mkdir build; cd build # create a new directory (folder) for build
cmake ../cmake \[options ...\] # configuration with (command-line) cmake
cmake \[options ...\] ../cmake # configuration with (command-line) cmake
make # compilation :pre
The cmake command will detect available features, enable selected
@ -41,7 +41,8 @@ If your machine has multiple CPU cores (most do these days), using a
command like "make -jN" (with N being the number of available local
CPU cores) can be much faster. If you plan to do development on
LAMMPS or need to re-compile LAMMPS repeatedly, installation of the
ccache (= Compiler Cache) software may speed up compilation even more.
ccache (= Compiler Cache) software may speed up repeated compilation
even more.
After compilation, you can optionally copy the LAMMPS executable and
library into your system folders (by default under $HOME/.local) with:
@ -108,7 +109,8 @@ command-line options. Several useful ones are:
-D CMAKE_BUILD_TYPE=type # type = Release or Debug
-G output # style of output CMake generates
-DVARIABLE=value # setting for a LAMMPS feature to enable
-D VARIABLE=value # ditto, but cannot come after CMakeLists.txt dir :pre
-D VARIABLE=value # ditto, but cannot come after CMakeLists.txt dir
-C path/to/preset/file # load some CMake settings before configuring :pre
All the LAMMPS-specific -D variables that a LAMMPS build supports are
described on the pages linked to from the "Build"_Build.html doc page.

View File

@ -82,17 +82,19 @@ which GPU hardware to build for.
[CMake build]:
-D GPU_API=value # value = opencl (default) or cuda
-D GPU_PREC=value # precision setting
# value = double or mixed (default) or single
-D OCL_TUNE=value # hardware choice for GPU_API=opencl
# generic (default) or intel (Intel CPU) or fermi, kepler, cypress (NVIDIA)
-D GPU_ARCH=value # primary GPU hardware choice for GPU_API=cuda
# value = sm_XX, see below
# default is Cuda-compiler dependent, but typically sm_20
-D CUDPP_OPT=value # optimization setting for GPU_API=cuda
# enables CUDA Performance Primitives Optimizations
# yes (default) or no :pre
-D GPU_API=value # value = opencl (default) or cuda
-D GPU_PREC=value # precision setting
# value = double or mixed (default) or single
-D OCL_TUNE=value # hardware choice for GPU_API=opencl
# generic (default) or intel (Intel CPU) or fermi, kepler, cypress (NVIDIA)
-D GPU_ARCH=value # primary GPU hardware choice for GPU_API=cuda
# value = sm_XX, see below
# default is Cuda-compiler dependent, but typically sm_20
-D CUDPP_OPT=value # optimization setting for GPU_API=cuda
# enables CUDA Performance Primitives Optimizations
# value = yes (default) or no
-D CUDA_MPS_SUPPORT=value # enables some tweaks required to run with active nvidia-cuda-mps daemon
# value = yes or no (default) :pre
GPU_ARCH settings for different GPU hardware is as follows:
@ -169,26 +171,24 @@ used to build the GPU library.
KIM package :h4,link(kim)
To build with this package, the KIM library must be downloaded and
built on your system. It must include the KIM models that you want to
use with LAMMPS.
To build with this package, the KIM library with API v2 must be downloaded
and built on your system. It must include the KIM models that you want to
use with LAMMPS. If you want to use the "kim_query"_kim_query.html
command, you also need to have libcurl installed with the matching
development headers and the curl-config tool.
Note that in LAMMPS lingo, a KIM model driver is a pair style
(e.g. EAM or Tersoff). A KIM model is a pair style for a particular
element or alloy and set of parameters, e.g. EAM for Cu with a
specific EAM potential file. Also note that installing the KIM API
library with all its models, may take around 30 min to build. Of
course you only need to do that once.
specific EAM potential file. Also note that downloading and installing
the KIM API library with all its models, may take a long time (10s of
minutes to hours) to build. Of course you only need to do that once.
See the list of KIM model drivers here:
https://openkim.org/kim-items/model-drivers/alphabetical
https://openkim.org/browse/model-drivers/alphabetical
See the list of all KIM models here:
https://openkim.org/kim-items/models/by-model-drivers
See the list of example KIM models included by default here:
https://openkim.org/kim-api on the "What is in the KIM API source
package?" page.
https://openkim.org/browse/models/by-model-drivers
[CMake build]:
@ -197,7 +197,7 @@ package?" page.
If DOWNLOAD_KIM is set, the KIM library will be downloaded and built
inside the CMake build directory. If the KIM library is already on
your system (in a location CMake cannot find it), set the PKG_CONFIG_PATH
environment variable so that libkim-api-v2 can be found.
environment variable so that libkim-api can be found.
[Traditional make]:
@ -859,23 +859,34 @@ file.
USER-INTEL package :h4,link(user-intel)
To build with this package, you must choose which hardware you want to
build for, either Intel CPUs or Intel KNLs. You should also typically
"install the USER-OMP package"_#user-omp, as it can be used in tandem
with the USER-INTEL package to good effect, as explained on the "Speed
intel"_Speed_intel.html doc page.
build for, either x86 CPUs or Intel KNLs in offload mode. You should
also typically "install the USER-OMP package"_#user-omp, as it can be
used in tandem with the USER-INTEL package to good effect, as explained
on the "Speed intel"_Speed_intel.html doc page.
[CMake build]:
-D INTEL_ARCH=value # value = cpu (default) or knl
-D BUILD_OMP=yes # also required to build with the USER-INTEl package :pre
-D INTEL_LRT_MODE=value # value = threads, none, or c++11 :pre
Requires an Intel compiler as well as the Intel TBB and MKL libraries.
In Long-range thread mode (LRT) a modified verlet style is used, that
operates the Kspace calculation in a separate thread concurrently to
other calculations. This has to be enabled in the "package intel"_package.html
command at runtime. With the setting "threads" it used the pthreads
library, while c++11 will use the built-in thread support of C++11
compilers. The option "none" skips compilation of this feature. The
default is to use "threads" if pthreads is available and otherwise "none".
Best performance is achieved with Intel hardware, Intel compilers, as well as
the Intel TBB and MKL libraries. However, the code also compiles, links, and
runs with other compilers and without TBB and MKL.
[Traditional make]:
Choose which hardware to compile for in Makefile.machine via the
following settings. See src/MAKE/OPTIONS/Makefile.intel_cpu* and
Makefile.knl files for examples.
Makefile.knl files for examples. and src/USER-INTEL/README for
additional information.
For CPUs:
@ -897,7 +908,17 @@ USER-MOLFILE package :h4,link(user-molfile)
[CMake build]:
No additional settings are needed besides "-D PKG_USER-MOLFILE=yes".
-D MOLFILE_INCLUDE_DIRS=path # (optional) path where VMD molfile plugin headers are installed
-D PKG_USER-MOLFILE=yes :pre
Using "-D PKG_USER-MOLFILE=yes" enables the package, and setting
"-D MOLFILE_INCLUDE DIRS" allows to provide a custom location for
the molfile plugin header files. These should match the ABI of the
plugin files used, and thus one typically sets them to include
folder of the local VMD installation in use. LAMMPS ships with a
couple of default header files that correspond to a popular VMD
version, usually the latest release.
[Traditional make]:
@ -906,7 +927,11 @@ loading library libdl.a that is typically present on all systems. It
is required for LAMMPS to link with this package. If the setting is
not valid for your system, you will need to edit the Makefile.lammps
file. See lib/molfile/README and lib/molfile/Makefile.lammps for
details.
details. It is also possible to configure a different folder with
the VMD molfile plugin header files. LAMMPS ships with a couple of
default headers, but these are not compatible with all VMD versions,
so it is often best to change this setting to the location of the
same include files of the local VMD installation in use.
:line

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@ -149,26 +149,41 @@ system. Using these files you can enable/disable portions of the
available packages in LAMMPS. If you need a custom preset you can take
one of them as a starting point and customize it to your needs.
cmake -C ../cmake/presets/all_on.cmake \[OPTIONS\] ../cmake | enable all packages
cmake -C ../cmake/presets/all_off.cmake \[OPTIONS\] ../cmake | disable all packages
cmake -C ../cmake/presets/std.cmake \[OPTIONS\] ../cmake | enable standard packages
cmake -C ../cmake/presets/user.cmake \[OPTIONS\] ../cmake | enable user packages
cmake -C ../cmake/presets/std_nolib.cmake \[OPTIONS\] ../cmake | enable standard packages that do not require extra libraries
cmake -C ../cmake/presets/nolib.cmake \[OPTIONS\] ../cmake | disable all packages that do not require extra libraries
cmake -C ../cmake/presets/manual_selection.cmake \[OPTIONS\] ../cmake | example of how to create a manual selection of packages :tb(s=|,a=l)
cmake -C ../cmake/presets/all_on.cmake \[OPTIONS\] ../cmake |
enable all packages |
cmake -C ../cmake/presets/all_off.cmake \[OPTIONS\] ../cmake |
disable all packages |
cmake -C ../cmake/presets/minimal.cmake \[OPTIONS\] ../cmake |
enable just a few core packages |
cmake -C ../cmake/presets/most.cmake \[OPTIONS\] ../cmake |
enable most common packages |
cmake -C ../cmake/presets/nolib.cmake \[OPTIONS\] ../cmake |
disable packages that do require extra libraries or tools |
cmake -C ../cmake/presets/clang.cmake \[OPTIONS\] ../cmake |
change settings to use the Clang compilers by default |
cmake -C ../cmake/presets/mingw.cmake \[OPTIONS\] ../cmake |
enable all packages compatible with MinGW compilers :tb(c=2,s=|,a=l)
NOTE: Running cmake this way manipulates the variable cache in your
current build directory. You can combine presets and options with
multiple cmake runs.
current build directory. You can combine multiple presets and options
in a single cmake run, or change settings incrementally by running
cmake with new flags.
[Example:]
# build LAMMPS with all "standard" packages which don't
# use libraries and enable GPU package
# build LAMMPS with most commonly used packages, but then remove
# those requiring additional library or tools, but still enable
# GPU package and configure it for using CUDA. You can run.
mkdir build
cd build
cmake -C ../cmake/presets/std_nolib.cmake -D PKG_GPU=on ../cmake :pre
cmake -C ../cmake/presets/most.cmake -C ../cmake/presets/nolib.cmake -D PKG_GPU=on -D GPU_API=cuda ../cmake :pre
# to add another package, say BODY to the previous configuration you can run:
cmake -D PKG_BODY=on . :pre
# to reset the package selection from above to the default of no packages
# but leaving all other settings untouched. You can run:
cmake -C ../cmake/presets/no_all.cmake . :pre
:line
[Make shortcuts for installing many packages]:

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@ -57,10 +57,10 @@ FFT_INC = -DFFT_SINGLE # do not specify for double precision
FFT_INC = -DFFT_PACK_ARRAY # or -DFFT_PACK_POINTER or -DFFT_PACK_MEMCPY :pre
# default is FFT_PACK_ARRAY if not specified
FFT_INC = -I/usr/local/include
FFT_INC = -I/usr/local/include
FFT_PATH = -L/usr/local/lib
FFT_LIB = -lfftw3 # FFTW3 double precision
FFT_LIB = -lfftw3 -lfftw3f # FFTW3 single precision
FFT_LIB = -lfftw3 # FFTW3 double precision
FFT_LIB = -lfftw3 -lfftw3f # FFTW3 single precision
FFT_LIB = -lmkl_intel_lp64 -lmkl_sequential -lmkl_core # MKL with Intel compiler
FFT_LIB = -lmkl_gf_lp64 -lmkl_sequential -lmkl_core # MKL with GNU compier :pre
@ -179,8 +179,11 @@ e.g. from 511 to -512, which can cause diagnostics like the
mean-squared displacement, as calculated by the "compute
msd"_compute_msd.html command, to be faulty.
Note that the USER-ATC package is not currently compatible with the
"bigbig" setting.
Note that the USER-ATC package and the USER-INTEL package are currently
not compatible with the "bigbig" setting. Also, there are limitations
when using the library interface. Some functions with known issues
have been replaced by dummy calls printing a corresponding error rather
than crashing randomly or corrupting data.
Also note that the GPU package requires its lib/gpu library to be
compiled with the same size setting, or the link will fail. A CMake

View File

@ -51,11 +51,10 @@ provides a unix/linux interface to low-level Windows functions, so LAMMPS
can be compiled on Windows. The necessary (minor) modifications to LAMMPS
are included, but may not always up-to-date for recently added functionality
and the corresponding new code. A machine makefile for using cygwin for
the old build system is provided. The CMake build system is untested
for this; you will have to request that makefiles are generated and
manually set the compiler.
the old build system is provided. Using CMake for this mode of compilation
is untested and not likely to work.
When compiling for Windows [not] set the -DLAMMPS_MEMALIGN define
When compiling for Windows do [not] set the -DLAMMPS_MEMALIGN define
in the LMP_INC makefile variable and add -lwsock32 -lpsapi to the linker
flags in LIB makefile variable. Try adding -static-libgcc or -static or
both to the linker flags when your resulting LAMMPS Windows executable
@ -79,7 +78,13 @@ probably the currently best tested and supported way to build LAMMPS
executables for Windows. There are makefiles provided for the
traditional build system, but CMake has also been successfully tested
using the mingw32-cmake and mingw64-cmake wrappers that are bundled
with the cross-compiler environment on Fedora machines.
with the cross-compiler environment on Fedora machines. A CMake preset
selecting all packages compatible with this cross-compilation build
is provided. You likely need to disable the GPU package unless you
download and install the contents of the pre-compiled "OpenCL ICD loader
library"_https://download.lammps.org/thirdparty/opencl-win-devel.tar.gz
into your MinGW64 cross-compiler environment. The cross-compilation
currently will only produce non-MPI serial binaries.
Please keep in mind, though, that this only applies to compiling LAMMPS.
Whether the resulting binaries do work correctly is no tested by the

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@ -68,6 +68,7 @@ An alphabetic list of all general LAMMPS commands.
"improper_style"_improper_style.html,
"include"_include.html,
"jump"_jump.html,
"kim_query"_kim_query.html,
"kspace_modify"_kspace_modify.html,
"kspace_style"_kspace_style.html,
"label"_label.html,
@ -78,9 +79,11 @@ An alphabetic list of all general LAMMPS commands.
"minimize"_minimize.html,
"min_modify"_min_modify.html,
"min_style"_min_style.html,
"min_style spin"_min_spin.html,
"molecule"_molecule.html,
"ndx2group"_group2ndx.html,
"neb"_neb.html,
"neb_spin"_neb_spin.html,
"neigh_modify"_neigh_modify.html,
"neighbor"_neighbor.html,
"newton"_newton.html,

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@ -116,6 +116,7 @@ Actions:
"minimize"_minimize.html,
"neb"_neb.html,
"neb_spin"_neb_spin.html,
"prd"_prd.html,
"rerun"_rerun.html,
"run"_run.html,

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@ -61,6 +61,7 @@ OPT.
"edpd/source"_fix_dpd_source.html,
"efield"_fix_efield.html,
"ehex"_fix_ehex.html,
"electron/stopping"_fix_electron_stopping.html,
"enforce2d (k)"_fix_enforce2d.html,
"eos/cv"_fix_eos_cv.html,
"eos/table"_fix_eos_table.html,
@ -106,6 +107,7 @@ OPT.
"mvv/edpd"_fix_mvv_dpd.html,
"mvv/tdpd"_fix_mvv_dpd.html,
"neb"_fix_neb.html,
"neb_spin"_fix_neb_spin.html,
"nph (ko)"_fix_nh.html,
"nph/asphere (o)"_fix_nph_asphere.html,
"nph/body"_fix_nph_body.html,
@ -224,7 +226,7 @@ OPT.
"wall/body/polyhedron"_fix_wall_body_polyhedron.html,
"wall/colloid"_fix_wall.html,
"wall/ees"_fix_wall_ees.html,
"wall/gran (o)"_fix_wall_gran.html,
"wall/gran"_fix_wall_gran.html,
"wall/gran/region"_fix_wall_gran_region.html,
"wall/harmonic"_fix_wall.html,
"wall/lj1043"_fix_wall.html,

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@ -98,6 +98,7 @@ OPT.
"gran/hertz/history (o)"_pair_gran.html,
"gran/hooke (o)"_pair_gran.html,
"gran/hooke/history (ko)"_pair_gran.html,
"granular"_pair_granular.html,
"gw"_pair_gw.html,
"gw/zbl"_pair_gw.html,
"hbond/dreiding/lj (o)"_pair_hbond_dreiding.html,

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@ -0,0 +1,13 @@
\documentclass[preview]{standalone}
\usepackage{varwidth}
\usepackage[utf8x]{inputenc}
\usepackage{amsmath, amssymb, graphics, setspace}
\begin{document}
\begin{varwidth}{50in}
\begin{equation}
\frac{d \vec{s}_{i}}{dt} = \lambda\, \vec{s}_{i} \times\left( \vec{\omega}_{i} \times\vec{s}_{i} \right)
\nonumber
\end{equation}
\end{varwidth}
\end{document}

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@ -0,0 +1,14 @@
\documentclass[preview]{standalone}
\usepackage{varwidth}
\usepackage[utf8x]{inputenc}
\usepackage{amsmath, amssymb, graphics, setspace}
\begin{document}
\begin{varwidth}{50in}
\begin{equation}
{\Delta t}_{\rm max} = \frac{2\pi}{\kappa
\left|\vec{\omega}_{\rm max} \right|}
\nonumber
\end{equation}
\end{varwidth}
\end{document}

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@ -0,0 +1,15 @@
\documentclass[preview]{standalone}
\usepackage{varwidth}
\usepackage[utf8x]{inputenc}
\usepackage{amsmath, amssymb, graphics, setspace}
\begin{document}
\begin{varwidth}{50in}
\begin{equation}
\omega_i^{\nu} =
(\nu - 1) \Delta \omega_i
{\rm ~~and~~} \Delta \omega_i = \frac{\omega_i}{Q-1}
, \nonumber
\end{equation}
\end{varwidth}
\end{document}

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doc/src/Eqs/neb_spin_k.jpg Normal file

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@ -0,0 +1,16 @@
\documentclass[preview]{standalone}
\usepackage{varwidth}
\usepackage[utf8x]{inputenc}
\usepackage{amsmath, amssymb, graphics, setspace}
\begin{document}
\begin{varwidth}{50in}
\begin{equation}
\vec{k}_i =
\frac{\vec{m}_i^I \times \vec{m}_i^F}{\left|\vec{m}_i^I
\times \vec{m}_i^F\right|}
%&{\rm ~if~}& \vec{m}_i^I \times \vec{m}_i^F
, \nonumber
\end{equation}
\end{varwidth}
\end{document}

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@ -0,0 +1,16 @@
\documentclass[preview]{standalone}
\usepackage{varwidth}
\usepackage[utf8x]{inputenc}
\usepackage{amsmath, amssymb, graphics, setspace}
\begin{document}
\begin{varwidth}{50in}
\begin{equation}
\vec{m}_i^{\nu} = \vec{m}_i^{I} \cos(\omega_i^{\nu})
+ (\vec{k}_i \times \vec{m}_i^{I}) \sin(\omega_i^{\nu})
+ (1.0-\cos(\omega_i^{\nu})) \vec{k}_i (\vec{k}_i\cdot
\vec{m}_i^{I})
, \nonumber
\end{equation}
\end{varwidth}
\end{document}

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@ -148,7 +148,7 @@ END_RST -->
<!-- HTML_ONLY -->
"CHARMM, AMBER, and DREIDING force fields"_Howto_bioFF.html
"CHARMM, AMBER, COMPASS, and DREIDING force fields"_Howto_bioFF.html
"TIP3P water model"_Howto_tip3p.html
"TIP4P water model"_Howto_tip4p.html
"SPC water model"_Howto_spc.html :all(b)

View File

@ -7,29 +7,31 @@ Documentation"_ld - "LAMMPS Commands"_lc :c
:line
CHARMM, AMBER, and DREIDING force fields :h3
CHARMM, AMBER, COMPASS, and DREIDING force fields :h3
A force field has 2 parts: the formulas that define it and the
coefficients used for a particular system. Here we only discuss
formulas implemented in LAMMPS that correspond to formulas commonly
used in the CHARMM, AMBER, and DREIDING force fields. Setting
coefficients is done in the input data file via the
"read_data"_read_data.html command or in the input script with
used in the CHARMM, AMBER, COMPASS, and DREIDING force fields. Setting
coefficients is done either from special sections in an input data file
via the "read_data"_read_data.html command or in the input script with
commands like "pair_coeff"_pair_coeff.html or
"bond_coeff"_bond_coeff.html. See the "Tools"_Tools.html doc page for
additional tools that can use CHARMM or AMBER to assign force field
coefficients and convert their output into LAMMPS input.
"bond_coeff"_bond_coeff.html and so on. See the "Tools"_Tools.html doc
page for additional tools that can use CHARMM, AMBER, or Materials
Studio generated files to assign force field coefficients and convert
their output into LAMMPS input.
See "(MacKerell)"_#howto-MacKerell for a description of the CHARMM force
field. See "(Cornell)"_#howto-Cornell for a description of the AMBER force
field.
field. See "(Cornell)"_#howto-Cornell for a description of the AMBER
force field. See "(Sun)"_#howto-Sun for a description of the COMPASS
force field.
:link(charmm,http://www.scripps.edu/brooks)
:link(amber,http://amber.scripps.edu)
These style choices compute force field formulas that are consistent
with common options in CHARMM or AMBER. See each command's
documentation for the formula it computes.
The interaction styles listed below compute force field formulas that
are consistent with common options in CHARMM or AMBER. See each
command's documentation for the formula it computes.
"bond_style"_bond_harmonic.html harmonic
"angle_style"_angle_charmm.html charmm
@ -44,28 +46,54 @@ documentation for the formula it computes.
"special_bonds"_special_bonds.html charmm
"special_bonds"_special_bonds.html amber :ul
NOTE: For CHARMM, newer {charmmfsw} or {charmmfsh} styles were
released in March 2017. We recommend they be used instead of the
older {charmm} styles. See discussion of the differences on the "pair
charmm"_pair_charmm.html and "dihedral charmm"_dihedral_charmm.html
doc pages.
NOTE: For CHARMM, newer {charmmfsw} or {charmmfsh} styles were released
in March 2017. We recommend they be used instead of the older {charmm}
styles. See discussion of the differences on the "pair
charmm"_pair_charmm.html and "dihedral charmm"_dihedral_charmm.html doc
pages.
COMPASS is a general force field for atomistic simulation of common
organic molecules, inorganic small molecules, and polymers which was
developed using ab initio and empirical parameterization techniques.
See the "Tools"_Tools.html doc page for the msi2lmp tool for creating
LAMMPS template input and data files from BIOVIAs Materials Studio
files. Please note that the msi2lmp tool is very old and largely
unmaintained, so it does not support all features of Materials Studio
provided force field files, especially additions during the last decade.
You should watch the output carefully and compare results, where
possible. See "(Sun)"_#howto-Sun for a description of the COMPASS force
field.
These interaction styles listed below compute force field formulas that
are consistent with the COMPASS force field. See each command's
documentation for the formula it computes.
"bond_style"_bond_class2.html class2
"angle_style"_angle_class2.html class2
"dihedral_style"_dihedral_class2.html class2
"improper_style"_improper_class2.html class2 :ul
"pair_style"_pair_class2.html lj/class2
"pair_style"_pair_class2.html lj/class2/coul/cut
"pair_style"_pair_class2.html lj/class2/coul/long :ul
"special_bonds"_special_bonds.html lj/coul 0 0 1 :ul
DREIDING is a generic force field developed by the "Goddard
group"_http://www.wag.caltech.edu at Caltech and is useful for
predicting structures and dynamics of organic, biological and
main-group inorganic molecules. The philosophy in DREIDING is to use
general force constants and geometry parameters based on simple
hybridization considerations, rather than individual force constants
and geometric parameters that depend on the particular combinations of
atoms involved in the bond, angle, or torsion terms. DREIDING has an
"explicit hydrogen bond term"_pair_hbond_dreiding.html to describe
interactions involving a hydrogen atom on very electronegative atoms
(N, O, F).
predicting structures and dynamics of organic, biological and main-group
inorganic molecules. The philosophy in DREIDING is to use general force
constants and geometry parameters based on simple hybridization
considerations, rather than individual force constants and geometric
parameters that depend on the particular combinations of atoms involved
in the bond, angle, or torsion terms. DREIDING has an "explicit hydrogen
bond term"_pair_hbond_dreiding.html to describe interactions involving a
hydrogen atom on very electronegative atoms (N, O, F).
See "(Mayo)"_#howto-Mayo for a description of the DREIDING force field
These style choices compute force field formulas that are consistent
with the DREIDING force field. See each command's
The interaction styles listed below compute force field formulas that
are consistent with the DREIDING force field. See each command's
documentation for the formula it computes.
"bond_style"_bond_harmonic.html harmonic
@ -100,6 +128,9 @@ Fischer, Gao, Guo, Ha, et al, J Phys Chem, 102, 3586 (1998).
[(Cornell)] Cornell, Cieplak, Bayly, Gould, Merz, Ferguson,
Spellmeyer, Fox, Caldwell, Kollman, JACS 117, 5179-5197 (1995).
:link(howto-Sun)
[(Sun)] Sun, J. Phys. Chem. B, 102, 73387364 (1998).
:link(howto-Mayo)
[(Mayo)] Mayo, Olfason, Goddard III, J Phys Chem, 94, 8897-8909
(1990).

View File

@ -166,9 +166,6 @@ void lammps_gather_atoms_subset(void *, char *, int, int, int, int *, void *)
void lammps_scatter_atoms(void *, char *, int, int, void *)
void lammps_scatter_atoms_subset(void *, char *, int, int, int, int *, void *) :pre
void lammps_create_atoms(void *, int, tagint *, int *, double *, double *,
imageint *, int) :pre
The gather functions collect peratom info of the requested type (atom
coords, atom types, forces, etc) from all processors, and returns the
same vector of values to each calling processor. The scatter
@ -176,6 +173,11 @@ functions do the inverse. They distribute a vector of peratom values,
passed by all calling processors, to individual atoms, which may be
owned by different processors.
IMPORTANT NOTE: These functions are not compatible with the
-DLAMMPS_BIGBIG setting when compiling LAMMPS. Dummy functions
that result in an error message and abort will be substituted
instead of resulting in random crashes and memory corruption.
The lammps_gather_atoms() function does this for all N atoms in the
system, ordered by atom ID, from 1 to N. The
lammps_gather_atoms_concat() function does it for all N atoms, but
@ -196,6 +198,9 @@ those values to each atom in the system. The
lammps_scatter_atoms_subset() function takes a subset of IDs as an
argument and only scatters those values to the owning atoms.
void lammps_create_atoms(void *, int, tagint *, int *, double *, double *,
imageint *, int) :pre
The lammps_create_atoms() function takes a list of N atoms as input
with atom types and coords (required), an optionally atom IDs and
velocities and image flags. It uses the coords of each atom to assign

View File

@ -57,6 +57,17 @@ library is then loaded by the Python interface. In this example we enable the
MOLECULE package and compile LAMMPS with C++ exceptions, PNG, JPEG and FFMPEG
output support enabled.
Step 1a: For the CMake based build system, the steps are:
mkdir $LAMMPS_DIR/build-shared
cd $LAMMPS_DIR/build-shared :pre
# MPI, PNG, Jpeg, FFMPEG are auto-detected
cmake ../cmake -DPKG_MOLECULE=yes -DLAMMPS_EXCEPTIONS=yes -DBUILD_LIB=yes -DBUILD_SHARED_LIBS=yes
make :pre
Step 1b: For the legacy, make based build system, the steps are:
cd $LAMMPS_DIR/src :pre
# add packages if necessary
@ -68,10 +79,9 @@ make mpi mode=shlib LMP_INC="-DLAMMPS_PNG -DLAMMPS_JPEG -DLAMMPS_FFMPEG -DLAMMPS
Step 2: Installing the LAMMPS Python package :h6
PyLammps is part of the lammps Python package. To install it simply install
that package into your current Python installation.
that package into your current Python installation with:
cd $LAMMPS_DIR/python
python install.py :pre
make install-python :pre
NOTE: Recompiling the shared library requires re-installing the Python package
@ -94,14 +104,21 @@ apt-get install python-virtualenv :pre
Creating a virtualenv with lammps installed :h6
# create virtualenv name 'testing' :pre
# create virtualenv named 'testing'
virtualenv $HOME/python/testing :pre
# activate 'testing' environment
source testing/bin/activate :pre
source $HOME/python/testing/bin/activate :pre
Now configure and compile the LAMMPS shared library as outlined above.
When using CMake and the shared library has already been build, you
need to re-run CMake to update the location of the python executable
to the location in the virtual environment with:
cmake . -DPYTHON_EXECUTABLE=$(which python) :pre
# install LAMMPS package in virtualenv
(testing) cd $LAMMPS_DIR/python
(testing) python install.py :pre
(testing) make install-python :pre
# install other useful packages
(testing) pip install matplotlib jupyter mpi4py :pre

View File

@ -17,6 +17,7 @@ periodically.
These are the relevant commands:
"neb"_neb.html for nudged elastic band calculations
"neb_spin"_neb_spin.html for magnetic nudged elastic band calculations
"prd"_prd.html for parallel replica dynamics
"tad"_tad.html for temperature accelerated dynamics
"temper"_temper.html for parallel tempering

View File

@ -10,7 +10,7 @@ Documentation"_ld - "LAMMPS Commands"_lc :c
Magnetic spins :h3
The magnetic spin simulations are enabled by the SPIN package, whose
implementation is detailed in "Tranchida"_#Tranchida7.
implementation is detailed in "Tranchida"_#Tranchida.
The model represents the simulation of atomic magnetic spins coupled
to lattice vibrations. The dynamics of those magnetic spins can be used
@ -36,13 +36,28 @@ A Langevin thermostat can be applied to those magnetic spins using
"fix langevin/spin"_fix_langevin_spin.html. Typically, this thermostat
can be coupled to another Langevin thermostat applied to the atoms
using "fix langevin"_fix_langevin.html in order to simulate
thermostatted spin-lattice system.
thermostatted spin-lattice systems.
The magnetic Gilbert damping can also be applied using "fix
langevin/spin"_fix_langevin_spin.html. It allows to either dissipate
the thermal energy of the Langevin thermostat, or to perform a
relaxation of the magnetic configuration toward an equilibrium state.
The command "fix setforce/spin"_fix_setforce.html allows to set the
components of the magnetic precession vectors (while erasing and
replacing the previously computed magnetic precession vectors on
the atom).
This command can be used to freeze the magnetic moment of certain
atoms in the simulation by zeroing their precession vector.
The command "fix nve/spin"_fix_nve_spin.html can be used to
perform a symplectic integration of the combined dynamics of spins
and atomic motions.
The minimization style "min/spin"_min_spin.html can be applied
to the spins to perform a minimization of the spin configuration.
All the computed magnetic properties can be output by two main
commands. The first one is "compute spin"_compute_spin.html, that
enables to evaluate magnetic averaged quantities, such as the total
@ -54,6 +69,6 @@ magnetic spin, or the magnetic force acting on this spin.
:line
:link(Tranchida7)
:link(Tranchida)
[(Tranchida)] Tranchida, Plimpton, Thibaudeau and Thompson,
arXiv preprint arXiv:1801.10233, (2018).
Journal of Computational Physics, 372, 406-425, (2018).

View File

@ -10,7 +10,7 @@ Documentation"_ld - "LAMMPS Commands"_lc :c
TIP3P water model :h3
The TIP3P water model as implemented in CHARMM
"(MacKerell)"_#howto-MacKerell specifies a 3-site rigid water molecule with
"(MacKerell)"_#howto-tip3p specifies a 3-site rigid water molecule with
charges and Lennard-Jones parameters assigned to each of the 3 atoms.
In LAMMPS the "fix shake"_fix_shake.html command can be used to hold
the two O-H bonds and the H-O-H angle rigid. A bond style of
@ -60,6 +60,10 @@ models"_http://en.wikipedia.org/wiki/Water_model.
:line
:link(howto-tip3p)
[(MacKerell)] MacKerell, Bashford, Bellott, Dunbrack, Evanseck, Field,
Fischer, Gao, Guo, Ha, et al, J Phys Chem, 102, 3586 (1998).
:link(Jorgensen1)
[(Jorgensen)] Jorgensen, Chandrasekhar, Madura, Impey, Klein, J Chem
Phys, 79, 926 (1983).

View File

@ -1,7 +1,7 @@
<!-- HTML_ONLY -->
<HEAD>
<TITLE>LAMMPS Users Manual</TITLE>
<META NAME="docnumber" CONTENT="28 Feb 2019 version">
<META NAME="docnumber" CONTENT="30 Apr 2019 version">
<META NAME="author" CONTENT="http://lammps.sandia.gov - Sandia National Laboratories">
<META NAME="copyright" CONTENT="Copyright (2003) Sandia Corporation. This software and manual is distributed under the GNU General Public License.">
</HEAD>
@ -21,7 +21,7 @@
:line
LAMMPS Documentation :c,h1
28 Feb 2019 version :c,h2
30 Apr 2019 version :c,h2
"What is a LAMMPS version?"_Manual_version.html

View File

@ -341,6 +341,8 @@ KIM package :link(PKG-KIM),h4
A "pair_style kim"_pair_kim.html command which is a wrapper on the
Knowledge Base for Interatomic Models (KIM) repository of interatomic
potentials, enabling any of them to be used in LAMMPS simulations.
Also a "kim_query"_kim_query.html command, which allows to query
the OpenKIM database for stored properties.
To use this package you must have the KIM library available on your
system.
@ -916,6 +918,7 @@ src/SPIN: filenames -> commands
"fix nve/spin"_fix_nve_spin.html
"fix precession/spin"_fix_precession_spin.html
"compute spin"_compute_spin.html
"neb/spin"_neb_spin.html
examples/SPIN :ul
:line

View File

@ -12,16 +12,23 @@ Installing LAMMPS in Python :h3
For Python to invoke LAMMPS, there are 2 files it needs to know about:
python/lammps.py
src/liblammps.so :ul
liblammps.so or liblammps.dylib :ul
Lammps.py is the Python wrapper on the LAMMPS library interface.
Liblammps.so is the shared LAMMPS library that Python loads, as
described above.
The python source code in lammps.py is the Python wrapper on the
LAMMPS library interface. The liblammps.so or liblammps.dylib file
is the shared LAMMPS library that Python loads dynamically.
You can insure Python can find these files in one of two ways:
You can achieve that Python can find these files in one of two ways:
set two environment variables
run the python/install.py script :ul
set two environment variables pointing to the location in the source tree
run "make install-python" or run the python/install.py script explicitly :ul
When calling "make install-python" LAMMPS will try to install the
python module and the shared library into the python site-packages folders;
either the system-wide ones, or the local users ones (in case of insufficient
permissions for the global install). Python will then find the module
and shared library file automatically. The exact location of these folders
depends on your python version and your operating system.
If you set the paths to these files as environment variables, you only
have to do it once. For the csh or tcsh shells, add something like
@ -30,42 +37,28 @@ this to your ~/.cshrc file, one line for each of the two files:
setenv PYTHONPATH $\{PYTHONPATH\}:/home/sjplimp/lammps/python
setenv LD_LIBRARY_PATH $\{LD_LIBRARY_PATH\}:/home/sjplimp/lammps/src :pre
If you use the python/install.py script, you need to invoke it every
time you rebuild LAMMPS (as a shared library) or make changes to the
python/lammps.py file.
On MacOSX you may also need to set DYLD_LIBRARY_PATH accordingly.
For Bourne/Korn shells accordingly into the corresponding files using
the "export" shell builtin.
You can invoke install.py from the python directory as
If you use "make install-python" or the python/install.py script, you need
to invoke it every time you rebuild LAMMPS (as a shared library) or
make changes to the python/lammps.py file, so that the site-packages
files are updated with the new version.
% python install.py \[libdir\] \[pydir\] :pre
If the default settings of "make install-python" are not what you want,
you can invoke install.py from the python directory manually as
The optional libdir is where to copy the LAMMPS shared library to; the
default is /usr/local/lib. The optional pydir is where to copy the
lammps.py file to; the default is the site-packages directory of the
version of Python that is running the install script.
% python install.py -m \<python module\> -l <shared library> -v <version.h file> \[-d \<pydir\>\] :pre
Note that libdir must be a location that is in your default
LD_LIBRARY_PATH, like /usr/local/lib or /usr/lib. And pydir must be a
location that Python looks in by default for imported modules, like
its site-packages dir. If you want to copy these files to
non-standard locations, such as within your own user space, you will
need to set your PYTHONPATH and LD_LIBRARY_PATH environment variables
accordingly, as above.
The -m flag points to the lammps.py python module file to be installed,
the -l flag points to the LAMMPS shared library file to be installed,
the -v flag points to the version.h file in the LAMMPS source
and the optional -d flag to a custom (legacy) installation folder :ul
If the install.py script does not allow you to copy files into system
directories, prefix the python command with "sudo". If you do this,
make sure that the Python that root runs is the same as the Python you
run. E.g. you may need to do something like
% sudo /usr/local/bin/python install.py \[libdir\] \[pydir\] :pre
You can also invoke install.py from the make command in the src
directory as
% make install-python :pre
In this mode you cannot append optional arguments. Again, you may
need to prefix this with "sudo". In this mode you cannot control
which Python is invoked by root.
If you use a legacy installation folder, you will need to set your
PYTHONPATH and LD_LIBRARY_PATH (and/or DYLD_LIBRARY_PATH) environment
variables accordingly, as described above.
Note that if you want Python to be able to load different versions of
the LAMMPS shared library (see "this section"_Python_shlib.html), you will

View File

@ -13,11 +13,11 @@ Overview of Python and LAMMPS :h3
LAMMPS can work together with Python in three ways. First, Python can
wrap LAMMPS through the its "library interface"_Howto_library.html, so
that a Python script can create one or more instances of LAMMPS and
launch one or more simulations. In Python lingo, this is "extending"
Python with LAMMPS.
launch one or more simulations. In Python lingo, this is called
"extending" Python with a LAMMPS module.
Second, a lower-level Python interface can be used indirectly through
provided PyLammps and IPyLammps wrapper classes, written in Python.
the provided PyLammps and IPyLammps wrapper classes, written in Python.
These wrappers try to simplify the usage of LAMMPS in Python by
providing an object-based interface to common LAMMPS functionality.
They also reduces the amount of code necessary to parameterize LAMMPS
@ -25,11 +25,12 @@ scripts through Python and make variables and computes directly
accessible.
Third, LAMMPS can use the Python interpreter, so that a LAMMPS
input script can invoke Python code directly, and pass information
back-and-forth between the input script and Python functions you
write. This Python code can also callback to LAMMPS to query or change
its attributes. In Python lingo, this is "embedding" Python in
LAMMPS. When used in this mode, Python can perform operations that
the simple LAMMPS input script syntax cannot.
input script or styles can invoke Python code directly, and pass
information back-and-forth between the input script and Python
functions you write. This Python code can also callback to LAMMPS
to query or change its attributes through the LAMMPS Python module
mentioned above. In Python lingo, this is "embedding" Python in
LAMMPS. When used in this mode, Python can perform script operations
that the simple LAMMPS input script syntax can not.

View File

@ -79,7 +79,7 @@ stdin.
Explicitly enable or disable KOKKOS support, as provided by the KOKKOS
package. Even if LAMMPS is built with this package, as described
in "Speed kokkos"_Speed_kokkos.html, this switch must be set to enable
running with the KOKKOS-enabled styles the package provides. If the
running with KOKKOS-enabled styles the package provides. If the
switch is not set (the default), LAMMPS will operate as if the KOKKOS
package were not installed; i.e. you can run standard LAMMPS or with
the GPU or USER-OMP packages, for testing or benchmarking purposes.
@ -448,7 +448,7 @@ partition screen files file.N.
[-suffix style args] :link(suffix)
Use variants of various styles if they exist. The specified style can
be {cuda}, {gpu}, {intel}, {kk}, {omp}, {opt}, or {hybrid}. These
be {gpu}, {intel}, {kk}, {omp}, {opt}, or {hybrid}. These
refer to optional packages that LAMMPS can be built with, as described
in "Accelerate performance"_Speed.html. The "gpu" style corresponds to the
GPU package, the "intel" style to the USER-INTEL package, the "kk"

View File

@ -24,7 +24,7 @@ LAMMPS to run on the CPU cores and co-processor cores simultaneously.
Angle Styles: charmm, harmonic :ulb,l
Bond Styles: fene, fourier, harmonic :l
Dihedral Styles: charmm, harmonic, opls :l
Dihedral Styles: charmm, fourier, harmonic, opls :l
Fixes: nve, npt, nvt, nvt/sllod, nve/asphere :l
Improper Styles: cvff, harmonic :l
Pair Styles: airebo, airebo/morse, buck/coul/cut, buck/coul/long,
@ -34,6 +34,10 @@ rebo, sw, tersoff :l
K-Space Styles: pppm, pppm/disp :l
:ule
IMPORTANT NOTE: None of the styles in the USER-INTEL package currently
support computing per-atom stress. If any compute or fix in your
input requires it, LAMMPS will abort with an error message.
[Speed-ups to expect:]
The speedups will depend on your simulation, the hardware, which

View File

@ -53,6 +53,7 @@ Commands :h1
include
info
jump
kim_query
kspace_modify
kspace_style
label
@ -61,10 +62,12 @@ Commands :h1
mass
message
min_modify
min_spin
min_style
minimize
molecule
neb
neb_spin
neigh_modify
neighbor
newton

View File

@ -54,9 +54,10 @@ local quantities have the word "local" in their style,
e.g. {bond/local}. Styles with neither "atom" or "local" in their
style produce global quantities.
Note that a single compute produces either global or per-atom or local
quantities, but never more than one of these (with only a few
exceptions, as documented by individual compute commands).
Note that a single compute can produce either global or per-atom or
local quantities, but not both global and per-atom. It can produce
local quantities in tandem with global or per-atom quantities. The
compute doc page will explain.
Global, per-atom, and local quantities each come in three kinds: a
single scalar value, a vector of values, or a 2d array of values. The

View File

@ -83,8 +83,10 @@ not in the specified fix group. Local quantities are calculated by
each processor based on the atoms it owns, but there may be zero or
more per atoms.
Note that a single fix may produces either global or per-atom or local
quantities (or none at all), but never more than one of these.
Note that a single fix can produce either global or per-atom or local
quantities (or none at all), but not both global and per-atom. It can
produce local quantities in tandem with global or per-atom quantities.
The fix doc page will explain.
Global, per-atom, and local quantities each come in three kinds: a
single scalar value, a vector of values, or a 2d array of values. The
@ -199,6 +201,7 @@ accelerated styles exist.
"edpd/source"_fix_dpd_source.html -
"efield"_fix_efield.html - impose electric field on system
"ehex"_fix_ehex.html - enhanced heat exchange algorithm
"electron/stopping"_fix_electron_stopping.html - electronic stopping power as a friction force
"enforce2d"_fix_enforce2d.html - zero out z-dimension velocity and force
"eos/cv"_fix_eos_cv.html -
"eos/table"_fix_eos_table.html -

View File

@ -35,6 +35,7 @@ keyword = {mode} or {file} or {ave} or {start} or {beyond} or {overwrite} or {ti
{mode} arg = {scalar} or {vector}
scalar = all input values are scalars
vector = all input values are vectors
{kind} arg = {global} or {peratom} or {local}
{file} arg = filename
filename = name of file to output histogram(s) to
{ave} args = {one} or {running} or {window}
@ -92,7 +93,8 @@ either all global, all per-atom, or all local quantities. Inputs of
different kinds (e.g. global and per-atom) cannot be mixed. Atom
attributes are per-atom vector values. See the doc page for
individual "compute" and "fix" commands to see what kinds of
quantities they generate.
quantities they generate. See the optional {kind} keyword below for
how to force the fix ave/histo command to disambiguate if necessary.
Note that the output of this command is a single histogram for all
input values combined together, not one histogram per input value.
@ -231,6 +233,14 @@ keyword is set to {vector}, then all input values must be global or
per-atom or local vectors, or columns of global or per-atom or local
arrays.
The {kind} keyword only needs to be set if a compute or fix produces
more than one kind of output (global, per-atom, local). If this is
not the case, then LAMMPS will determine what kind of input is
provided and whether all the input arguments are consistent. If a
compute or fix produces more than one kind of output, the {kind}
keyword should be used to specify which output will be used. The
remaining input arguments must still be consistent.
The {beyond} keyword determines how input values that fall outside the
{lo} to {hi} bounds are treated. Values such that {lo} <= value <=
{hi} are assigned to one bin. Values on a bin boundary are assigned
@ -240,7 +250,7 @@ If {beyond} is set to {end} then values < {lo} are counted in the
first bin and values > {hi} are counted in the last bin. If {beyond}
is set to {extend} then two extra bins are created, so that there are
Nbins+2 total bins. Values < {lo} are counted in the first bin and
values > {hi} are counted in the last bin (Nbins+1). Values between
values > {hi} are counted in the last bin (Nbins+2). Values between
{lo} and {hi} (inclusive) are counted in bins 2 through Nbins+1. The
"coordinate" stored and printed for these two extra bins is {lo} and
{hi}.
@ -354,5 +364,6 @@ ave/chunk"_fix_ave_chunk.html, "fix ave/time"_fix_ave_time.html,
[Default:] none
The option defaults are mode = scalar, ave = one, start = 0, no file
output, beyond = ignore, and title 1,2,3 = strings as described above.
The option defaults are mode = scalar, kind = figured out from input
arguments, ave = one, start = 0, no file output, beyond = ignore, and
title 1,2,3 = strings as described above.

View File

@ -385,6 +385,10 @@ No parameter of this fix can be used with the {start/stop} keywords of
the "run"_run.html command. This fix is not invoked during "energy
minimization"_minimize.html.
When fix bond/react is 'unfixed,' all internally-created groups are
deleted. Therefore, fix bond/react can only be unfixed after unfixing
all other fixes that use any group created by fix bond/react.
[Restrictions:]
This fix is part of the USER-MISC package. It is only enabled if

View File

@ -0,0 +1,165 @@
"LAMMPS WWW Site"_lws - "LAMMPS Documentation"_ld - "LAMMPS Commands"_lc :c
:link(lws,http://lammps.sandia.gov)
:link(ld,Manual.html)
:link(lc,Commands_all.html)
:line
fix electron/stopping command :h3
[Syntax:]
fix ID group-ID electron/stopping Ecut file keyword value ... :pre
ID, group-ID are documented in "fix"_fix.html command :ulb,l
electron/stopping = style name of this fix command :l
Ecut = minimum kinetic energy for electronic stopping (energy units) :l
file = name of the file containing the electronic stopping power table :l
zero or more keyword/value pairs may be appended to args :l
keyword = {region} or {minneigh} :l
{region} value = region-ID
region-ID = region, whose atoms will be affected by this fix
{minneigh} value = minneigh
minneigh = minimum number of neighbors an atom to have stopping applied :pre
:ule
[Examples:]
fix el all electron/stopping 10.0 elstop-table.txt
fix el all electron/stopping 10.0 elstop-table.txt minneigh 3
fix el mygroup electron/stopping 1.0 elstop-table.txt region bulk :pre
[Description:]
This fix implements inelastic energy loss for fast projectiles in solids. It
applies a friction force to fast moving atoms to slow them down due to
"electronic stopping"_#elstopping (energy lost via electronic collisions per
unit of distance). This fix should be used for simulation of irradiation
damage or ion implantation, where the ions can lose noticeable amounts of
energy from electron excitations. If the electronic stopping power is not
considered, the simulated range of the ions can be severely overestimated
("Nordlund98"_#Nordlund98, "Nordlund95"_#Nordlund95).
The electronic stopping is implemented by applying a friction force
to each atom as:
\begin\{equation\}
\vec\{F\}_i = \vec\{F\}^0_i - \frac\{\vec\{v\}_i\}\{\|\vec\{v\}_i\|\} \cdot S_e
\end\{equation\}
where \(\vec\{F\}_i\) is the resulting total force on the atom.
\(\vec\{F\}^0_i\) is the original force applied to the atom, \(\vec\{v\}_i\) is
its velocity and \(S_e\) is the stopping power of the ion.
NOTE: In addition to electronic stopping, atomic cascades and irradiation
simulations require the use of an adaptive timestep (see
"fix dt/reset"_fix_dt_reset.html) and the repulsive ZBL potential (see
"ZBL"_pair_zbl.html potential) or similar. Without these settings the
interaction between the ion and the target atoms will be faulty. It is also
common to use in such simulations a thermostat ("fix_nvt"_fix_nh.html) in
the borders of the simulation cell.
NOTE: This fix removes energy from fast projectiles without depositing it as a
heat to the simulation cell. Such implementation might lead to the unphysical
results when the amount of energy deposited to the electronic system is large,
e.g. simulations of Swift Heavy Ions (energy per nucleon of 100 keV/amu or
higher) or multiple projectiles. You could compensate energy loss by coupling
bulk atoms with some thermostat or control heat transfer between electronic and
atomic subsystems with the two-temperature model ("fix_ttm"_fix_ttm.html).
At low velocities the electronic stopping is negligible. The electronic
friction is not applied to atoms whose kinetic energy is smaller than {Ecut},
or smaller than the lowest energy value given in the table in {file}.
Electronic stopping should be applied only when a projectile reaches bulk
material. This fix scans neighbor list and excludes atoms with fewer than
{minneigh} neighbors (by default one). If the pair potential cutoff is large,
minneigh should be increased, though not above the number of nearest neighbors
in bulk material. An alternative is to disable the check for neighbors by
setting {minneigh} to zero and using the {region} keyword. This is necessary
when running simulations of cluster bombardment.
If the {region} keyword is used, the atom must also be in the specified
geometric "region"_region.html in order to have electronic stopping applied to
it. This is useful if the position of the bulk material is fixed. By default
the electronic stopping is applied everywhere in the simulation cell.
:line
The energy ranges and stopping powers are read from the file {file}.
Lines starting with {#} and empty lines are ignored. Otherwise each
line must contain exactly [N+1] numbers, where [N] is the number of atom
types in the simulation.
The first column is the energy for which the stopping powers on that
line apply. The energies must be sorted from the smallest to the largest.
The other columns are the stopping powers \(S_e\) for each atom type,
in ascending order, in force "units"_units.html. The stopping powers for
intermediate energy values are calculated with linear interpolation between
2 nearest points.
For example:
# This is a comment
# atom-1 atom-2
# eV eV/Ang eV/Ang # units metal
10 0 0
250 60 80
750 100 150 :pre
If an atom which would have electronic stopping applied to it has a
kinetic energy higher than the largest energy given in {file}, LAMMPS
will exit with an error message.
The stopping power depends on the energy of the ion and the target
material. The electronic stopping table can be obtained from
scientific publications, experimental databases or by using
"SRIM"_#SRIM software. Other programs such as "CasP"_#CasP or
"PASS"_#PASS can calculate the energy deposited as a function
of the impact parameter of the ion; these results can be used
to derive the stopping power.
[Restart, fix_modify, output, run start/stop, minimize info:]
No information about this fix is written to "binary restart
files"_restart.html.
The "fix_modify"_fix_modify.html options are not supported.
This fix computes a global scalar, which can be accessed by various
"output commands"_Howto_output.html. The scalar is the total energy
loss from electronic stopping applied by this fix since the start of
the latest run. It is considered "intensive".
The {start/stop} keywords of the "run"_run.html command have no effect
on this fix.
[Restrictions:]
This pair style is part of the USER-MISC package. It is only enabled if
LAMMPS was built with that package. See the "Build package"_Build_package.html
doc page for more info.
[Default:]
The default is no limitation by region, and minneigh = 1.
:line
:link(elstopping)
[(electronic stopping)] Wikipedia - Electronic Stopping Power: https://en.wikipedia.org/wiki/Stopping_power_%28particle_radiation%29
:link(Nordlund98)
[(Nordlund98)] Nordlund, Kai, et al. Physical Review B 57.13 (1998): 7556.
:link(Nordlund95)
[(Nordlund95)] Nordlund, Kai. Computational materials science 3.4 (1995): 448-456.
:link(SRIM)
[(SRIM)] SRIM webpage: http://www.srim.org/
:link(CasP)
[(CasP)] CasP webpage: https://www.helmholtz-berlin.de/people/gregor-schiwietz/casp_en.html
:link(PASS)
[(PASS)] PASS webpage: https://www.sdu.dk/en/DPASS

View File

@ -102,7 +102,7 @@ Bi = exp(beta * Vij(max)) :pre
where beta = 1/kTequil, and {Tequil} is the temperature of the system
and an argument to this fix. Note that Bi >= 1 at every step.
NOTE: To run GHD, the input script must also use the "fix
NOTE: To run a GHD simulation, the input script must also use the "fix
langevin"_fix_langevin.html command to thermostat the atoms at the
same {Tequil} as specified by this fix, so that the system is running
constant-temperature (NVT) dynamics. LAMMPS does not check that this
@ -166,9 +166,9 @@ correctly. There will just be fewer events because the hyper time
NOTE: If you have no physical intuition as to the smallest barrier
height in your system, a reasonable strategy to determine the largest
{Vmax} you can use for an LHD model, is to run a sequence of
{Vmax} you can use for a GHD model, is to run a sequence of
simulations with smaller and smaller {Vmax} values, until the event
rate does not change.
rate does not change (as a function of hyper time).
The {Tequil} argument is the temperature at which the system is
simulated; see the comment above about the "fix
@ -177,7 +177,8 @@ beta term in the exponential factor that determines how much boost is
achieved as a function of the bias potential.
In general, the lower the value of {Tequil} and the higher the value
of {Vmax}, the more boost will be achievable by the GHD algorithm.
of {Vmax}, the more time boost will be achievable by the GHD
algorithm.
:line
@ -190,41 +191,43 @@ The "fix_modify"_fix_modify.html {energy} option is supported by this
fix to add the energy of the bias potential to the the system's
potential energy as part of "thermodynamic output"_thermo_style.html.
This fix computes a global scalar and global vector of length 11, which
This fix computes a global scalar and global vector of length 12, which
can be accessed by various "output commands"_Howto_output.html. The
scalar is the magnitude of the bias potential (energy units) applied on
the current timestep. The vector stores the following quantities:
1 = boost factor on this step (unitless)
2 = max strain Eij of any bond on this step (unitless)
2 = max strain Eij of any bond on this step (absolute value, unitless)
3 = ID of first atom in the max-strain bond
4 = ID of second atom in the max-strain bond
5 = average # of bonds/atom on this step :ul
6 = fraction of timesteps with bias = 0.0 during this run
7 = max drift distance of any atom during this run (distance units)
8 = max bond length during this run (distance units) :ul
6 = fraction of timesteps where the biased bond has bias = 0.0 during this run
7 = fraction of timesteps where the biased bond has negative strain during this run
8 = max drift distance of any atom during this run (distance units)
9 = max bond length during this run (distance units) :ul
9 = cumulative hyper time since fix was defined (time units)
10 = cumulative count of event timesteps since fix was defined
11 = cumulative count of atoms in events since fix was defined :ul
10 = cumulative hyper time since fix was defined (time units)
11 = cumulative count of event timesteps since fix was defined
12 = cumulative count of atoms in events since fix was defined :ul
The first 5 quantities are for the current timestep. Quantities 6-8
are for the current hyper run. Quantities 9-11 are cumulative across
multiple runs (since the fix was defined in the input script).
The first 5 quantities are for the current timestep. Quantities 6-9
are for the current hyper run. They are reset each time a new hyper
run is performed. Quantities 19-12 are cumulative across multiple
runs (since the point in the input script the fix was defined).
For value 7, drift is the distance an atom moves between timesteps
when the bond list is reset, i.e. between events. Atoms involved in
an event will typically move the greatest distance since others are
typically oscillating around their lattice site.
For value 8, drift is the distance an atom moves between two quenched
states when the second quench determines an event has occurred. Atoms
involved in an event will typically move the greatest distance since
others typically remain near their original quenched position.
For value 10, events are checked for by the "hyper"_hyper.html command
For value 11, events are checked for by the "hyper"_hyper.html command
once every {Nevent} timesteps. This value is the count of those
timesteps on which one (or more) events was detected. It is NOT the
number of distinct events, since more than one event may occur in the
same {Nevent} time window.
For value 11, each time the "hyper"_hyper.html command checks for an
For value 12, each time the "hyper"_hyper.html command checks for an
event, it invokes a compute to flag zero or more atoms as
participating in one or more events. E.g. atoms that have displaced
more than some distance from the previous quench state. Value 11 is

View File

@ -22,10 +22,9 @@ Dcut = minimum distance between boosted bonds (distance units) :l
alpha = boostostat relaxation time (time units) :l
Btarget = desired time boost factor (unitless) :l
zero or more keyword/value pairs may be appended :l
keyword = {lost} or {check/bias} or {check/coeff}
{lostbond} value = error/warn/ignore
{check/bias} values = Nevery error/warn/ignore
{check/coeff} values = Nevery error/warn/ignore :pre
keyword = {check/ghost} or {check/bias} :l
{check/ghost} values = none
{check/bias} values = Nevery error/warn/ignore :pre
:ule
[Examples:]
@ -65,8 +64,8 @@ To understand this description, you should first read the description
of the GHD algorithm on the "fix hyper/global"_fix_hyper_global.html
doc page. This description of LHD builds on the GHD description.
The definition of bonds, Eij, and Emax are the same for GHD and LHD.
The formulas for Vij(max) and Fij(max) are also the same except for a
The definition of bonds and Eij are the same for GHD and LHD. The
formulas for Vij(max) and Fij(max) are also the same except for a
pre-factor Cij, explained below.
The bias energy Vij applied to a bond IJ with maximum strain is
@ -117,11 +116,11 @@ where Vkl(max) is the bias energy of the maxstrain bond KL within bond
IJ's neighborhood, beta = 1/kTequil, and {Tequil} is the temperature
of the system and an argument to this fix.
NOTE: To run LHD, the input script must also use the "fix
langevin"_fix_langevin.html command to thermostat the atoms at the
same {Tequil} as specified by this fix, so that the system is running
constant-temperature (NVT) dynamics. LAMMPS does not check that this
is done.
NOTE: To run an LHD simulation, the input script must also use the
"fix langevin"_fix_langevin.html command to thermostat the atoms at
the same {Tequil} as specified by this fix, so that the system is
running constant-temperature (NVT) dynamics. LAMMPS does not check
that this is done.
Note that if IJ = KL, then bond IJ is a biased bond on that timestep,
otherwise it is not. But regardless, the boost factor Bij can be
@ -216,20 +215,20 @@ each pair. E.g. something like 2x the cutoff of the interatomic
potential. In practice a {Dcut} value of ~10 Angstroms seems to work
well for many solid-state systems.
NOTE: You must also insure that ghost atom communication is performed
for a distance of at least {Dcut} + {cutevent} where {cutevent} = the
distance one or more atoms move (between quenched states) to be
considered an "event". It is an argument to the "compute
event/displace" command used to detect events. By default the ghost
communication distance is set by the pair_style cutoff, which will
typically be < {Dcut}. The "comm_modify cutoff"_comm_modify.html
command can be used to set the ghost cutoff explicitly, e.g.
NOTE: You should insure that ghost atom communication is performed for
a distance of at least {Dcut} + {cutevent} = the distance one or more
atoms move (between quenched states) to be considered an "event". It
is an argument to the "compute event/displace" command used to detect
events. By default the ghost communication distance is set by the
pair_style cutoff, which will typically be < {Dcut}. The "comm_modify
cutoff"_comm_modify.html command should be used to override the ghost
cutoff explicitly, e.g.
comm_modify cutoff 12.0 :pre
This fix does not know the {cutevent} parameter, but uses half the
bond length as an estimate to warn if the ghost cutoff is not long
enough.
Note that this fix does not know the {cutevent} parameter, but uses
half the {cutbond} parameter as an estimate to warn if the ghost
cutoff is not long enough.
As described above the {alpha} argument is a pre-factor in the
boostostat update equation for each bond's Cij prefactor. {Alpha} is
@ -269,7 +268,30 @@ NOTE: If you have no physical intuition as to the smallest barrier
height in your system, a reasonable strategy to determine the largest
{Btarget} you can use for an LHD model, is to run a sequence of
simulations with smaller and smaller {Btarget} values, until the event
rate does not change.
rate does not change (as a function of hyper time).
:line
Here is additional information on the optional keywords for this fix.
The {check/ghost} keyword turns on extra computation each timestep to
compute statistics about ghost atoms used to determine which bonds to
bias. The output of these stats are the vector values 14 and 15,
described below. If this keyword is not enabled, the output
of the stats will be zero.
The {check/bias} keyword turns on extra computation and communication
to check if any biased bonds are closer than {Dcut} to each other,
which should not be the case if LHD is operating correctly. Thus it
is a debugging check. The {Nevery} setting determines how often the
check is made. The {error}, {warn}, or {ignore} setting determines
what is done if the count of too-close bonds is not zero. Either the
code will exit, or issue a warning, or silently tally the count. The
count can be output as vector value 17, as described below. If this
keyword is not enabled, the output of that statistic will be 0.
Note that both of these computations are costly, hence they are only
enabled by these keywords.
:line
@ -282,95 +304,120 @@ The "fix_modify"_fix_modify.html {energy} option is supported by this
fix to add the energy of the bias potential to the the system's
potential energy as part of "thermodynamic output"_thermo_style.html.
This fix computes a global scalar and global vector of length 23,
which can be accessed by various "output
commands"_Howto_output.html. The scalar is the magnitude of
the bias potential (energy units) applied on the current timestep,
summed over all biased bonds. The vector stores the following
quantities:
This fix computes a global scalar and global vector of length 21,
which can be accessed by various "output commands"_Howto_output.html.
The scalar is the magnitude of the bias potential (energy units)
applied on the current timestep, summed over all biased bonds. The
vector stores the following quantities:
1 = # of biased bonds on this step
2 = max strain Eij of any bond on this step (unitless)
3 = average bias potential for all biased bonds on this step (energy units)
2 = max strain Eij of any bond on this step (absolute value, unitless)
3 = average bias coeff for all bonds on this step (unitless)
4 = average # of bonds/atom on this step
5 = average neighbor bonds/bond on this step within {Dcut} :ul
6 = fraction of steps and bonds with no bias during this run
7 = max drift distance of any atom during this run (distance units)
8 = max bond length during this run (distance units)
9 = average # of biased bonds/step during this run
10 = average bias potential for all biased bonds during this run (energy units)
11 = max bias potential for any biased bond during this run (energy units)
12 = min bias potential for any biased bond during this run (energy units)
13 = max distance from my sub-box of any ghost atom with maxstrain < qfactor during this run (distance units)
14 = max distance outside my box of any ghost atom with any maxstrain during this run (distance units)
15 = count of ghost neighbor atoms not found on reneighbor steps during this run
16 = count of lost bond partners during this run
17 = average bias coeff for lost bond partners during this run
18 = count of bias overlaps found during this run
19 = count of non-matching bias coefficients found during this run :ul
6 = max bond length during this run (distance units)
7 = average # of biased bonds/step during this run
8 = fraction of biased bonds with no bias during this run
9 = fraction of biased bonds with negative strain during this run
10 = average bias coeff for all bonds during this run (unitless)
11 = min bias coeff for any bond during this run (unitless)
12 = max bias coeff for any bond during this run (unitless)
20 = cumulative hyper time since fix created (time units)
21 = cumulative count of event timesteps since fix created
22 = cumulative count of atoms in events since fix created
23 = cumulative # of new bonds since fix created :ul
13 = max drift distance of any bond atom during this run (distance units)
14 = max distance from proc subbox of any ghost atom with maxstrain < qfactor during this run (distance units)
15 = max distance outside my box of any ghost atom with any maxstrain during this run (distance units)
16 = count of ghost atoms that could not be found on reneighbor steps during this run
17 = count of bias overlaps (< Dcut) found during this run
18 = cumulative hyper time since fix created (time units)
19 = cumulative count of event timesteps since fix created
20 = cumulative count of atoms in events since fix created
21 = cumulative # of new bonds formed since fix created :ul
The first quantities (1-5) are for the current timestep. Quantities
6-19 are for the current hyper run. They are reset each time a new
hyper run is performed. Quantities 20-23 are cumulative across
multiple runs (since the fix was defined in the input script).
6-17 are for the current hyper run. They are reset each time a new
hyper run is performed. Quantities 18-21 are cumulative across
multiple runs (since the point in the input script the fix was
defined).
For value 6, the numerator is a count of all biased bonds on every
For value 8, the numerator is a count of all biased bonds on each
timestep whose bias energy = 0.0 due to Eij >= {qfactor}. The
denominator is the count of all biased bonds on all timesteps.
For value 7, drift is the distance an atom moves between timesteps
when the bond list is reset, i.e. between events. Atoms involved in
an event will typically move the greatest distance since others are
typically oscillating around their lattice site.
For value 9, the numerator is a count of all biased bonds on each
timestep with negative strain. The denominator is the count of all
biased bonds on all timesteps.
For values 13 and 14, the maxstrain of a ghost atom is the maxstrain
of any bond it is part of, and it is checked for ghost atoms within
the bond neighbor cutoff.
Values 13-17 are mostly useful for debugging and diagnostic purposes.
Values 15-19 are mostly useful for debugging and diagnostic purposes.
For value 13, drift is the distance an atom moves between two quenched
states when the second quench determines an event has occurred. Atoms
involved in an event will typically move the greatest distance since
others typically remain near their original quenched position.
For values 15-17, it is possible that a ghost atom owned by another
processor will move far enough (e.g. as part of an event-in-progress)
that it will no longer be within the communication cutoff distance for
acquiring ghost atoms. Likewise it may be a ghost atom bond partner
that cannot be found because it has moved too far. These values count
those occurrences. Because they typically involve atoms that are part
of events, they do not usually indicate bad dynamics. Value 16 is the
average bias coefficient for bonds where a partner atom was lost.
For values 14-16, neighbor atoms in the full neighbor list with cutoff
{Dcut} may be ghost atoms outside a processor's sub-box. Before the
next event occurs they may move further than {Dcut} away from the
sub-box boundary. Value 14 is the furthest (from the sub-box) any
ghost atom in the neighbor list with maxstrain < {qfactor} was
accessed during the run. Value 15 is the same except that the ghost
atom's maxstrain may be >= {qfactor}, which may mean it is about to
participate in an event. Value 16 is a count of how many ghost atoms
could not be found on reneighbor steps, presumably because they moved
too far away due to their participation in an event (which will likely
be detected at the next quench).
For value 18, no two bonds should be biased if they are within a
Typical values for 14 and 15 should be slightly larger than {Dcut},
which accounts for ghost atoms initially at a {Dcut} distance moving
thermally before the next event takes place.
Note that for values 14 and 15 to be computed, the optional keyword
{check/ghost} must be specified. Otherwise these values will be zero.
This is because computing them incurs overhead, so the values are only
computed if requested.
Value 16 should be zero or small. As explained above a small count
likely means some ghost atoms were participating in their own events
and moved a longer distance. If the value is large, it likely means
the communication cutoff for ghosts is too close to {Dcut} leading to
many not-found ghost atoms before the next event. This may lead to a
reduced number of bonds being selected for biasing, since the code
assumes those atoms are part of highly strained bonds. As explained
above, the "comm_modify cutoff"_comm_modify.html command can be used
to set a longer cutoff.
For value 17, no two bonds should be biased if they are within a
{Dcut} distance of each other. This value should be zero, indicating
that no pair of bonds "overlap", meaning they are closer than {Dcut}
from each other.
that no pair of biased bonds are closer than {Dcut} from each other.
For value 19, the same bias coefficient is stored by both atoms in an
IJ bond. This value should be zero, indicating that for all bonds,
each atom in the bond stores the a bias coefficient with the same
value.
Note that for values 17 to be computed, the optional keyword
{check/bias} must be specified and it determines how often this check
is performed. This is because performing the check incurs overhead,
so if only computed as often as requested.
Value 20 is simply the specified {boost} factor times the number of
timestep times the timestep size.
The result at the end of the run is the cumulative total from every
timestep the check was made. Note that the value is a count of atoms
in bonds which found other atoms in bonds too close, so it is almost
always an over-count of the number of too-close bonds.
For value 21, events are checked for by the "hyper"_hyper.html command
Value 18 is simply the specified {boost} factor times the number of
timesteps times the timestep size.
For value 19, events are checked for by the "hyper"_hyper.html command
once every {Nevent} timesteps. This value is the count of those
timesteps on which one (or more) events was detected. It is NOT the
number of distinct events, since more than one event may occur in the
same {Nevent} time window.
For value 22, each time the "hyper"_hyper.html command checks for an
For value 20, each time the "hyper"_hyper.html command checks for an
event, it invokes a compute to flag zero or more atoms as
participating in one or more events. E.g. atoms that have displaced
more than some distance from the previous quench state. Value 22 is
more than some distance from the previous quench state. Value 20 is
the cumulative count of the number of atoms participating in any of
the events that were found.
Value 23 tallies the number of new bonds created by the bond reset
Value 21 tallies the number of new bonds created by the bond reset
operation. Bonds between a specific I,J pair of atoms may persist for
the entire hyperdynamics simulation if neither I or J are involved in
an event.
@ -378,6 +425,16 @@ an event.
The scalar and vector values calculated by this fix are all
"intensive".
This fix also computes a local vector of length the number of bonds
currently in the system. The value for each bond is its Cij prefactor
(bias coefficient). These values can be can be accessed by various
"output commands"_Howto_output.html. A particularly useful one is the
"fix ave/histo"_fix_ave_histo.html command which can be used to
histogram the Cij values to see if they are distributed reasonably
close to 1.0, which indicates a good choice of {Vmax}.
The local values calculated by this fix are unitless.
No parameter of this fix can be used with the {start/stop} keywords of
the "run"_run.html command. This fix is not invoked during "energy
minimization"_minimize.html.
@ -392,7 +449,9 @@ doc page for more info.
"hyper"_hyper.html, "fix hyper/global"_fix_hyper_global.html
[Default:] None
[Default:]
The check/ghost and check/bias keywords are not enabled by default.
:line

View File

@ -99,4 +99,4 @@ integration fix (e.g. {fix nve/spin}).
:link(Tranchida2)
[(Tranchida)] Tranchida, Plimpton, Thibaudeau and Thompson,
Journal of Computational Physics, (2018).
Journal of Computational Physics, 372, 406-425, (2018).

View File

@ -97,7 +97,7 @@ Note that in this case the specified {Kspring} is in force/distance
units.
With a value of {ideal}, the spring force is computed as suggested in
"(WeinenE)"_#WeinenE :
"(WeinanE)"_#WeinanE :
Fnudge_parallel = -{Kspring} * (RD-RDideal) / (2 * meanDist) :pre
@ -224,8 +224,8 @@ specified (no inter-replica force on the end replicas).
[(Henkelman2)] Henkelman, Uberuaga, Jonsson, J Chem Phys, 113,
9901-9904 (2000).
:link(WeinenE)
[(WeinenE)] E, Ren, Vanden-Eijnden, Phys Rev B, 66, 052301 (2002).
:link(WeinanE)
[(WeinanE)] E, Ren, Vanden-Eijnden, Phys Rev B, 66, 052301 (2002).
:link(Jonsson)
[(Jonsson)] Jonsson, Mills and Jacobsen, in Classical and Quantum

76
doc/src/fix_neb_spin.txt Normal file
View File

@ -0,0 +1,76 @@
"LAMMPS WWW Site"_lws - "LAMMPS Documentation"_ld - "LAMMPS Commands"_lc :c
:link(lws,http://lammps.sandia.gov)
:link(ld,Manual.html)
:link(lc,Commands_all.html)
:line
fix neb/spin command :h3
[Syntax:]
fix ID group-ID neb/spin Kspring :pre
ID, group-ID are documented in "fix"_fix.html command :ulb,l
neb/spin = style name of this fix command :l
Kspring = spring constant for parallel nudging force
(force/distance units or force units, see parallel keyword) :pre,ule
[Examples:]
fix 1 active neb/spin 1.0
[Description:]
Add nudging forces to spins in the group for a multi-replica
simulation run via the "neb/spin"_neb_spin.html command to perform a
geodesic nudged elastic band (GNEB) calculation for finding the
transition state.
Hi-level explanations of GNEB are given with the
"neb/spin"_neb_spin.html command and on the
"Howto replica"_Howto_replica.html doc page.
The fix neb/spin command must be used with the "neb/spin" command and
defines how inter-replica nudging forces are computed. A GNEB
calculation is divided in two stages. In the first stage n replicas
are relaxed toward a MEP until convergence. In the second stage, the
climbing image scheme is enabled, so that the replica having the highest
energy relaxes toward the saddle point (i.e. the point of highest energy
along the MEP), and a second relaxation is performed.
The nudging forces are calculated as explained in
"(BessarabB)"_#BessarabB).
See this reference for more explanation about their expression.
[Restart, fix_modify, output, run start/stop, minimize info:]
No information about this fix is written to "binary restart
files"_restart.html. None of the "fix_modify"_fix_modify.html options
are relevant to this fix. No global or per-atom quantities are stored
by this fix for access by various "output commands"_Howto_output.html.
No parameter of this fix can be used with the {start/stop} keywords of
the "run"_run.html command.
The forces due to this fix are imposed during an energy minimization,
as invoked by the "minimize"_minimize.html command via the
"neb/spin"_neb_spin.html command.
[Restrictions:]
This command can only be used if LAMMPS was built with the SPIN
package. See the "Build package"_Build_package.html doc
page for more info.
[Related commands:]
"neb_spin"_neb_spin.html
[Default:]
none
:line
:link(BessarabB)
[(BessarabB)] Bessarab, Uzdin, Jonsson, Comp Phys Comm, 196,
335-347 (2015).

View File

@ -73,4 +73,4 @@ instead of "array" is also valid.
:link(Tranchida1)
[(Tranchida)] Tranchida, Plimpton, Thibaudeau and Thompson,
Journal of Computational Physics, (2018).
Journal of Computational Physics, 372, 406-425, (2018).

View File

@ -31,7 +31,7 @@ fix 1 all precession/spin zeeman 0.1 0.0 0.0 1.0 anisotropy 0.001 0.0 0.0 1.0 :p
[Description:]
Impose a force torque to each magnetic spin in the group.
This fix applies a precession torque to each magnetic spin in the group.
Style {zeeman} is used for the simulation of the interaction
between the magnetic spins in the defined group and an external

View File

@ -8,6 +8,7 @@
fix setforce command :h3
fix setforce/kk command :h3
fix setforce/spin command :h3
[Syntax:]
@ -27,6 +28,7 @@ keyword = {region} :l
fix freeze indenter setforce 0.0 0.0 0.0
fix 2 edge setforce NULL 0.0 0.0
fix 1 edge setforce/spin 0.0 0.0 0.0
fix 2 edge setforce NULL 0.0 v_oscillate :pre
[Description:]
@ -65,6 +67,19 @@ to it.
:line
Style {spin} suffix sets the components of the magnetic precession
vectors instead of the mechanical forces. This also erases all
previously computed magnetic precession vectors on the atom, though
additional magnetic fixes could add new forces.
This command can be used to freeze the magnetic moment of certain
atoms in the simulation by zeroing their precession vector.
All options defined above remain valid, they just apply to the magnetic
precession vectors instead of the forces.
:line
Styles with a {gpu}, {intel}, {kk}, {omp}, or {opt} suffix are
functionally the same as the corresponding style without the suffix.
They have been optimized to run faster, depending on your available
@ -117,7 +132,10 @@ forces to any value besides zero when performing a minimization. Use
the "fix addforce"_fix_addforce.html command if you want to apply a
non-zero force to atoms during a minimization.
[Restrictions:] none
[Restrictions:]
The fix {setforce/spin} only makes sense when LAMMPS was built with the
SPIN package.
[Related commands:]

View File

@ -7,22 +7,24 @@
:line
fix wall/gran command :h3
fix wall/gran/omp command :h3
[Syntax:]
fix ID group-ID wall/gran fstyle Kn Kt gamma_n gamma_t xmu dampflag wallstyle args keyword values ... :pre
fix ID group-ID wall/gran fstyle fstyle_params wallstyle args keyword values ... :pre
ID, group-ID are documented in "fix"_fix.html command :ulb,l
wall/gran = style name of this fix command :l
fstyle = style of force interactions between particles and wall :l
possible choices: hooke, hooke/history, hertz/history :pre
Kn = elastic constant for normal particle repulsion (force/distance units or pressure units - see discussion below) :l
Kt = elastic constant for tangential contact (force/distance units or pressure units - see discussion below) :l
gamma_n = damping coefficient for collisions in normal direction (1/time units or 1/time-distance units - see discussion below) :l
gamma_t = damping coefficient for collisions in tangential direction (1/time units or 1/time-distance units - see discussion below) :l
xmu = static yield criterion (unitless value between 0.0 and 1.0e4) :l
dampflag = 0 or 1 if tangential damping force is excluded or included :l
possible choices: hooke, hooke/history, hertz/history, granular :pre
fstyle_params = parameters associated with force interaction style :l
For {hooke}, {hooke/history}, and {hertz/history}, {fstyle_params} are:
Kn = elastic constant for normal particle repulsion (force/distance units or pressure units - see discussion below)
Kt = elastic constant for tangential contact (force/distance units or pressure units - see discussion below)
gamma_n = damping coefficient for collisions in normal direction (1/time units or 1/time-distance units - see discussion below)
gamma_t = damping coefficient for collisions in tangential direction (1/time units or 1/time-distance units - see discussion below)
xmu = static yield criterion (unitless value between 0.0 and 1.0e4)
dampflag = 0 or 1 if tangential damping force is excluded or included :pre
For {granular}, {fstyle_params} are set using the same syntax as for the {pair_coeff} command of "pair_style granular"_pair_granular.html :pre
wallstyle = {xplane} or {yplane} or {zplane} or {zcylinder} :l
args = list of arguments for a particular style :l
{xplane} or {yplane} or {zplane} args = lo hi
@ -44,7 +46,10 @@ keyword = {wiggle} or {shear} :l
fix 1 all wall/gran hooke 200000.0 NULL 50.0 NULL 0.5 0 xplane -10.0 10.0
fix 1 all wall/gran hooke/history 200000.0 NULL 50.0 NULL 0.5 0 zplane 0.0 NULL
fix 2 all wall/gran hooke 100000.0 20000.0 50.0 30.0 0.5 1 zcylinder 15.0 wiggle z 3.0 2.0 :pre
fix 2 all wall/gran hooke 100000.0 20000.0 50.0 30.0 0.5 1 zcylinder 15.0 wiggle z 3.0 2.0
fix 3 all wall/gran/region granular hooke 1000.0 50.0 tangential linear_nohistory 1.0 0.4 damping velocity region myBox
fix 4 all wall/gran/region granular jkr 1e5 1500.0 0.3 10.0 tangential mindlin NULL 1.0 0.5 rolling sds 500.0 200.0 0.5 twisting marshall region myCone
fix 5 all wall/gran/region granular dmt 1e5 0.2 0.3 10.0 tangential mindlin NULL 1.0 0.5 rolling sds 500.0 200.0 0.5 twisting marshall damping tsuji region myCone :pre
[Description:]
@ -54,31 +59,40 @@ close enough to touch it.
The nature of the wall/particle interactions are determined by the
{fstyle} setting. It can be any of the styles defined by the
"pair_style granular"_pair_gran.html commands. Currently this is
{hooke}, {hooke/history}, or {hertz/history}. The equation for the
force between the wall and particles touching it is the same as the
corresponding equation on the "pair_style granular"_pair_gran.html doc
page, in the limit of one of the two particles going to infinite
radius and mass (flat wall). Specifically, delta = radius - r =
overlap of particle with wall, m_eff = mass of particle, and the
effective radius of contact = RiRj/Ri+Rj is just the radius of the
particle.
"pair_style gran/*"_pair_gran.html or the more general "pair_style
granular"_pair_granular.html" commands. Currently the options are
{hooke}, {hooke/history}, or {hertz/history} for the former, and
{granular} with all the possible options of the associated
{pair_coeff} command for the latter. The equation for the force
between the wall and particles touching it is the same as the
corresponding equation on the "pair_style gran/*"_pair_gran.html and
"pair_style_granular"_pair_granular.html doc pages, in the limit of
one of the two particles going to infinite radius and mass (flat
wall). Specifically, delta = radius - r = overlap of particle with
wall, m_eff = mass of particle, and the effective radius of contact =
RiRj/Ri+Rj is set to the radius of the particle.
The parameters {Kn}, {Kt}, {gamma_n}, {gamma_t}, {xmu} and {dampflag}
have the same meaning and units as those specified with the
"pair_style granular"_pair_gran.html commands. This means a NULL can
be used for either {Kt} or {gamma_t} as described on that page. If a
"pair_style gran/*"_pair_gran.html commands. This means a NULL can be
used for either {Kt} or {gamma_t} as described on that page. If a
NULL is used for {Kt}, then a default value is used where {Kt} = 2/7
{Kn}. If a NULL is used for {gamma_t}, then a default value is used
where {gamma_t} = 1/2 {gamma_n}.
All the model choices for cohesion, tangential friction, rolling
friction and twisting friction supported by the "pair_style
granular"_pair_granular.html through its {pair_coeff} command are also
supported for walls. These are discussed in greater detail on the doc
page for "pair_style granular"_pair_granular.html.
Note that you can choose a different force styles and/or different
values for the 6 wall/particle coefficients than for particle/particle
values for the wall/particle coefficients than for particle/particle
interactions. E.g. if you wish to model the wall as a different
material.
NOTE: As discussed on the doc page for "pair_style
granular"_pair_gran.html, versions of LAMMPS before 9Jan09 used a
gran/*"_pair_gran.html, versions of LAMMPS before 9Jan09 used a
different equation for Hertzian interactions. This means Hertizian
wall/particle interactions have also changed. They now include a
sqrt(radius) term which was not present before. Also the previous
@ -108,14 +122,14 @@ Optionally, the wall can be moving, if the {wiggle} or {shear}
keywords are appended. Both keywords cannot be used together.
For the {wiggle} keyword, the wall oscillates sinusoidally, similar to
the oscillations of particles which can be specified by the
"fix move"_fix_move.html command. This is useful in packing
simulations of granular particles. The arguments to the {wiggle}
keyword specify a dimension for the motion, as well as it's
{amplitude} and {period}. Note that if the dimension is in the plane
of the wall, this is effectively a shearing motion. If the dimension
is perpendicular to the wall, it is more of a shaking motion. A
{zcylinder} wall can only be wiggled in the z dimension.
the oscillations of particles which can be specified by the "fix
move"_fix_move.html command. This is useful in packing simulations of
granular particles. The arguments to the {wiggle} keyword specify a
dimension for the motion, as well as it's {amplitude} and {period}.
Note that if the dimension is in the plane of the wall, this is
effectively a shearing motion. If the dimension is perpendicular to
the wall, it is more of a shaking motion. A {zcylinder} wall can only
be wiggled in the z dimension.
Each timestep, the position of a wiggled wall in the appropriate {dim}
is set according to this equation:
@ -137,28 +151,6 @@ the clockwise direction for {vshear} > 0 or counter-clockwise for
{vshear} < 0. In this case, {vshear} is the tangential velocity of
the wall at whatever {radius} has been defined.
:line
Styles with a {gpu}, {intel}, {kk}, {omp}, or {opt} suffix are
functionally the same as the corresponding style without the suffix.
They have been optimized to run faster, depending on your available
hardware, as discussed on the "Speed packages"_Speed_packages.html doc
page. The accelerated styles take the same arguments and should
produce the same results, except for round-off and precision issues.
These accelerated styles are part of the GPU, USER-INTEL, KOKKOS,
USER-OMP and OPT packages, respectively. They are only enabled if
LAMMPS was built with those packages. See the "Build
package"_Build_package.html doc page for more info.
You can specify the accelerated styles explicitly in your input script
by including their suffix, or you can use the "-suffix command-line
switch"_Run_options.html when you invoke LAMMPS, or you can use the
"suffix"_suffix.html command in your input script.
See the "Speed packages"_Speed_packages.html doc page for more
instructions on how to use the accelerated styles effectively.
[Restart, fix_modify, output, run start/stop, minimize info:]
This fix writes the shear friction state of atoms interacting with the
@ -188,6 +180,7 @@ Any dimension (xyz) that has a granular wall must be non-periodic.
"fix move"_fix_move.html,
"fix wall/gran/region"_fix_wall_gran_region.html,
"pair_style granular"_pair_gran.html
"pair_style gran/*"_pair_gran.html
"pair_style granular"_pair_granular.html
[Default:] none

View File

@ -10,24 +10,30 @@ fix wall/gran/region command :h3
[Syntax:]
fix ID group-ID wall/gran/region fstyle Kn Kt gamma_n gamma_t xmu dampflag wallstyle regionID :pre
fix ID group-ID wall/gran/region fstyle fstyle_params wallstyle regionID :pre
ID, group-ID are documented in "fix"_fix.html command :ulb,l
wall/region = style name of this fix command :l
fstyle = style of force interactions between particles and wall :l
possible choices: hooke, hooke/history, hertz/history :pre
Kn = elastic constant for normal particle repulsion (force/distance units or pressure units - see discussion below) :l
Kt = elastic constant for tangential contact (force/distance units or pressure units - see discussion below) :l
gamma_n = damping coefficient for collisions in normal direction (1/time units or 1/time-distance units - see discussion below) :l
gamma_t = damping coefficient for collisions in tangential direction (1/time units or 1/time-distance units - see discussion below) :l
xmu = static yield criterion (unitless value between 0.0 and 1.0e4) :l
dampflag = 0 or 1 if tangential damping force is excluded or included :l
possible choices: hooke, hooke/history, hertz/history, granular :pre
fstyle_params = parameters associated with force interaction style :l
For {hooke}, {hooke/history}, and {hertz/history}, {fstyle_params} are:
Kn = elastic constant for normal particle repulsion (force/distance units or pressure units - see discussion below)
Kt = elastic constant for tangential contact (force/distance units or pressure units - see discussion below)
gamma_n = damping coefficient for collisions in normal direction (1/time units or 1/time-distance units - see discussion below)
gamma_t = damping coefficient for collisions in tangential direction (1/time units or 1/time-distance units - see discussion below)
xmu = static yield criterion (unitless value between 0.0 and 1.0e4)
dampflag = 0 or 1 if tangential damping force is excluded or included :pre
For {granular}, {fstyle_params} are set using the same syntax as for the {pair_coeff} command of "pair_style granular"_pair_granular.html :pre
wallstyle = region (see "fix wall/gran"_fix_wall_gran.html for options for other kinds of walls) :l
region-ID = region whose boundary will act as wall :l,ule
[Examples:]
fix wall all wall/gran/region hooke/history 1000.0 200.0 200.0 100.0 0.5 1 region myCone :pre
fix wall all wall/gran/region hooke/history 1000.0 200.0 200.0 100.0 0.5 1 region myCone
fix 3 all wall/gran/region granular hooke 1000.0 50.0 tangential linear_nohistory 1.0 0.4 damping velocity region myBox
fix 4 all wall/gran/region granular jkr 1e5 1500.0 0.3 10.0 tangential mindlin NULL 1.0 0.5 rolling sds 500.0 200.0 0.5 twisting marshall region myCone
fix 5 all wall/gran/region granular dmt 1e5 0.2 0.3 10.0 tangential mindlin NULL 1.0 0.5 rolling sds 500.0 200.0 0.5 twisting marshall damping tsuji region myCone :pre
[Description:]
@ -42,8 +48,8 @@ Here are snapshots of example models using this command.
Corresponding input scripts can be found in examples/granregion.
Click on the images to see a bigger picture. Movies of these
simulations are "here on the Movies
page"_http://lammps.sandia.gov/movies.html#granregion of the
LAMMPS web site.
page"_http://lammps.sandia.gov/movies.html#granregion of the LAMMPS
web site.
:image(JPG/gran_funnel_small.jpg,JPG/gran_funnel.png)
:image(JPG/gran_mixer_small.jpg,JPG/gran_mixer.png)
@ -123,12 +129,16 @@ to make the two faces differ by epsilon in their position.
The nature of the wall/particle interactions are determined by the
{fstyle} setting. It can be any of the styles defined by the
"pair_style granular"_pair_gran.html commands. Currently this is
{hooke}, {hooke/history}, or {hertz/history}. The equation for the
force between the wall and particles touching it is the same as the
corresponding equation on the "pair_style granular"_pair_gran.html doc
page, but the effective radius is calculated using the radius of the
particle and the radius of curvature of the wall at the contact point.
"pair_style gran/*"_pair_gran.html or the more general "pair_style
granular"_pair_granular.html" commands. Currently the options are
{hooke}, {hooke/history}, or {hertz/history} for the former, and
{granular} with all the possible options of the associated
{pair_coeff} command for the latter. The equation for the force
between the wall and particles touching it is the same as the
corresponding equation on the "pair_style gran/*"_pair_gran.html and
"pair_style_granular"_pair_granular.html doc pages, but the effective
radius is calculated using the radius of the particle and the radius
of curvature of the wall at the contact point.
Specifically, delta = radius - r = overlap of particle with wall,
m_eff = mass of particle, and RiRj/Ri+Rj is the effective radius, with
@ -141,12 +151,18 @@ particle.
The parameters {Kn}, {Kt}, {gamma_n}, {gamma_t}, {xmu} and {dampflag}
have the same meaning and units as those specified with the
"pair_style granular"_pair_gran.html commands. This means a NULL can
be used for either {Kt} or {gamma_t} as described on that page. If a
"pair_style gran/*"_pair_gran.html commands. This means a NULL can be
used for either {Kt} or {gamma_t} as described on that page. If a
NULL is used for {Kt}, then a default value is used where {Kt} = 2/7
{Kn}. If a NULL is used for {gamma_t}, then a default value is used
where {gamma_t} = 1/2 {gamma_n}.
All the model choices for cohesion, tangential friction, rolling
friction and twisting friction supported by the "pair_style
granular"_pair_granular.html through its {pair_coeff} command are also
supported for walls. These are discussed in greater detail on the doc
page for "pair_style granular"_pair_granular.html.
Note that you can choose a different force styles and/or different
values for the 6 wall/particle coefficients than for particle/particle
interactions. E.g. if you wish to model the wall as a different
@ -154,9 +170,9 @@ material.
[Restart, fix_modify, output, run start/stop, minimize info:]
Similar to "fix wall/gran"_fix_wall_gran.html command, this fix
writes the shear friction state of atoms interacting with the wall to
"binary restart files"_restart.html, so that a simulation can continue
Similar to "fix wall/gran"_fix_wall_gran.html command, this fix writes
the shear friction state of atoms interacting with the wall to "binary
restart files"_restart.html, so that a simulation can continue
correctly if granular potentials with shear "history" effects are
being used. This fix also includes info about a moving region in the
restart file. See the "read_restart"_read_restart.html command for
@ -170,14 +186,14 @@ So you must re-define your region and if it is a moving region, define
its motion attributes in a way that is consistent with the simulation
that wrote the restart file. In particular, if you want to change the
region motion attributes (e.g. its velocity), then you should ensure
the position/orientation of the region at the initial restart
timestep is the same as it was on the timestep the restart file was
written. If this is not possible, you may need to ignore info in the
restart file by defining a new fix wall/gran/region command in your
restart script, e.g. with a different fix ID. Or if you want to keep
the shear history info but discard the region motion information, you
can use the same fix ID for fix wall/gran/region, but assign it a
region with a different region ID.
the position/orientation of the region at the initial restart timestep
is the same as it was on the timestep the restart file was written.
If this is not possible, you may need to ignore info in the restart
file by defining a new fix wall/gran/region command in your restart
script, e.g. with a different fix ID. Or if you want to keep the
shear history info but discard the region motion information, you can
use the same fix ID for fix wall/gran/region, but assign it a region
with a different region ID.
None of the "fix_modify"_fix_modify.html options are relevant to this
fix. No global or per-atom quantities are stored by this fix for

View File

@ -40,6 +40,7 @@ Fixes :h1
fix_dt_reset
fix_efield
fix_ehex
fix_electron_stopping
fix_enforce2d
fix_eos_cv
fix_eos_table
@ -83,6 +84,7 @@ Fixes :h1
fix_msst
fix_mvv_dpd
fix_neb
fix_neb_spin
fix_nh
fix_nh_eff
fix_nh_uef

46
doc/src/kim_query.txt Normal file
View File

@ -0,0 +1,46 @@
"LAMMPS WWW Site"_lws - "LAMMPS Documentation"_ld - "LAMMPS Commands"_lc :c
:link(lws,http://lammps.sandia.gov)
:link(ld,Manual.html)
:link(lc,Commands_all.html)
:line
kim_query command :h3
[Syntax:]
kim_query variable query_function web_query_flags :pre
variable = name of a (string style) variable where the result of the query is stored
query_function = name of the OpenKIM web API query function to be used
web_query_flags = a series of keyword=value pairs that represent the web query; supported keywords depend on query function :ul
[Examples:]
kim_query latconst get_test_result test=TE_156715955670 model=MO_800509458712 &
prop=structure-cubic-crystal-npt species=\["Al"\] keys=\["a"\] units=\["angstrom"\] :pre
[Description:]
The kim_query command allows to retrieve properties from the OpenKIM
through a web query. The result is stored in a string style
"variable"_variable.html, the name of which must be given as the first
argument of the kim_query command. The second required argument is the
name of the actual query function (e.g. {get_test_result}). All following
arguments are parameters handed over to the web query in the format
{keyword=value}. The list of supported keywords and the type of how
the value has to be encoded depends on the query function used. This
mirrors the functionality available on the OpenKIM webpage at
"https://query.openkim.org"_https://query.openkim.org/
[Restrictions:]
This command is part of the KIM package. It is only enabled if
LAMMPS was built with that package. Furthermore, its correct
functioning depends on compiling LAMMPS with libcurl support.
See the "Build package"_Build_package.html doc page for more info.
[Related commands:]
"pair_style kim"_pair_kim.html, "variable"_variable.html

View File

@ -167,6 +167,7 @@ if.html
include.html
info.html
jump.html
kim_query.html
label.html
lattice.html
log.html
@ -174,9 +175,11 @@ mass.html
message.html
min_modify.html
min_style.html
min_spin.html
minimize.html
molecule.html
neb.html
neb_spin.html
neigh_modify.html
neighbor.html
newton.html
@ -263,6 +266,7 @@ fix_drude_transform.html
fix_dt_reset.html
fix_efield.html
fix_ehex.html
fix_electron_stopping.html
fix_enforce2d.html
fix_eos_cv.html
fix_eos_table.html
@ -306,6 +310,7 @@ fix_mscg.html
fix_msst.html
fix_mvv_dpd.html
fix_neb.html
fix_neb_spin.html
fix_nh.html
fix_nh_eff.html
fix_nph_asphere.html
@ -578,6 +583,7 @@ pair_extep.html
pair_gauss.html
pair_gayberne.html
pair_gran.html
pair_granular.html
pair_gromacs.html
pair_gw.html
pair_ilp_graphene_hbn.html

View File

@ -13,11 +13,15 @@ min_modify command :h3
min_modify keyword values ... :pre
one or more keyword/value pairs may be listed :ulb,l
keyword = {dmax} or {line}
keyword = {dmax} or {line} or {alpha_damp} or {discrete_factor}
{dmax} value = max
max = maximum distance for line search to move (distance units)
{line} value = {backtrack} or {quadratic} or {forcezero}
backtrack,quadratic,forcezero = style of linesearch to use :pre
backtrack,quadratic,forcezero = style of linesearch to use
{alpha_damp} value = damping
damping = fictitious Gilbert damping for spin minimization (adim)
{discrete_factor} value = factor
factor = discretization factor for adaptive spin timestep (adim) :pre
:ule
[Examples:]
@ -65,6 +69,17 @@ difference of two large values (energy before and energy after) and
that difference may be smaller than machine epsilon even if atoms
could move in the gradient direction to reduce forces further.
Keywords {alpha_damp} and {discrete_factor} only make sense when
a "min_spin"_min_spin.html command is declared.
Keyword {alpha_damp} defines an analog of a magnetic Gilbert
damping. It defines a relaxation rate toward an equilibrium for
a given magnetic system.
Keyword {discrete_factor} defines a discretization factor for the
adaptive timestep used in the {spin} minimization.
See "min_spin"_min_spin.html for more information about those
quantities.
Default values are {alpha_damp} = 1.0 and {discrete_factor} = 10.0.
[Restrictions:] none
[Related commands:]

65
doc/src/min_spin.txt Normal file
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@ -0,0 +1,65 @@
"LAMMPS WWW Page"_lws - "LAMMPS Documentation"_ld - "LAMMPS Commands"_lc :c
:link(lws,http://lammps.sandia.gov)
:link(ld,Manual.html)
:link(lc,Commands_all.html)
:line
min_style spin command :h3
[Syntax:]
min_style spin :pre
[Examples:]
min_style spin :pre
[Description:]
Apply a minimization algorithm to use when a "minimize"_minimize.html
command is performed.
Style {spin} defines a damped spin dynamics with an adaptive
timestep, according to:
:c,image(Eqs/min_spin_damping.jpg)
with lambda a damping coefficient (similar to a Gilbert
damping).
Lambda can be defined by setting the {alpha_damp} keyword with the
"min_modify"_min_modify.html command.
The minimization procedure solves this equation using an
adaptive timestep. The value of this timestep is defined
by the largest precession frequency that has to be solved in the
system:
:c,image(Eqs/min_spin_timestep.jpg)
with {|omega|_{max}} the norm of the largest precession frequency
in the system (across all processes, and across all replicas if a
spin/neb calculation is performed).
Kappa defines a discretization factor {discrete_factor} for the
definition of this timestep.
{discrete_factor} can be defined with the "min_modify"_min_modify.html
command.
NOTE: The {spin} style replaces the force tolerance by a torque
tolerance. See "minimize"_minimize.html for more explanation.
[Restrictions:]
This minimization procedure is only applied to spin degrees of
freedom for a frozen lattice configuration.
[Related commands:]
"min_style"_min_style.html, "minimize"_minimize.html,
"min_modify"_min_modify.html
[Default:]
The option defaults are {alpha_damp} = 1.0 and {discrete_factor} =
10.0.

View File

@ -11,11 +11,12 @@ min_style command :h3
min_style style :pre
style = {cg} or {hftn} or {sd} or {quickmin} or {fire} :ul
style = {cg} or {hftn} or {sd} or {quickmin} or {fire} or {spin} :ul
[Examples:]
min_style cg
min_style spin
min_style fire :pre
[Description:]
@ -61,6 +62,10 @@ the velocity non-parallel to the current force vector. The velocity
of each atom is initialized to 0.0 by this style, at the beginning of
a minimization.
Style {spin} is a damped spin dynamics with an adaptive
timestep.
See the "min/spin"_min_spin.html doc page for more information.
Either the {quickmin} and {fire} styles are useful in the context of
nudged elastic band (NEB) calculations via the "neb"_neb.html command.

View File

@ -103,6 +103,13 @@ the line search fails because the step distance backtracks to 0.0
the number of outer iterations or timesteps exceeds {maxiter}
the number of total force evaluations exceeds {maxeval} :ul
NOTE: the "minimization style"_min_style.html {spin} replaces
the force tolerance {ftol} by a torque tolerance.
The minimization procedure stops if the 2-norm (length) of the
global torque vector (defined as the cross product between the
spins and their precession vectors omega) is less than {ftol},
or if any of the other criteria are met.
NOTE: You can also use the "fix halt"_fix_halt.html command to specify
a general criterion for exiting a minimization, that is a calculation
performed on the state of the current system, as defined by an

375
doc/src/neb_spin.txt Normal file
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@ -0,0 +1,375 @@
"LAMMPS WWW Site"_lws - "LAMMPS Documentation"_ld - "LAMMPS Commands"_lc :c
:link(lws,http://lammps.sandia.gov)
:link(ld,Manual.html)
:link(lc,Commands_all.html)
:line
neb command :h3
[Syntax:]
neb/spin etol ttol N1 N2 Nevery file-style arg keyword :pre
etol = stopping tolerance for energy (energy units) :ulb,l
ttol = stopping tolerance for torque ( units) :l
N1 = max # of iterations (timesteps) to run initial NEB :l
N2 = max # of iterations (timesteps) to run barrier-climbing NEB :l
Nevery = print replica energies and reaction coordinates every this many timesteps :l
file-style = {final} or {each} or {none} :l
{final} arg = filename
filename = file with initial coords for final replica
coords for intermediate replicas are linearly interpolated
between first and last replica
{each} arg = filename
filename = unique filename for each replica (except first)
with its initial coords
{none} arg = no argument all replicas assumed to already have
their initial coords :pre
keyword = {verbose}
:ule
[Examples:]
neb/spin 0.1 0.0 1000 500 50 final coords.final
neb/spin 0.0 0.001 1000 500 50 each coords.initial.$i
neb/spin 0.0 0.001 1000 500 50 none verbose :pre
[Description:]
Perform a geodesic nudged elastic band (GNEB) calculation using multiple
replicas of a system. Two or more replicas must be used; the first
and last are the end points of the transition path.
GNEB is a method for finding both the spin configurations and height
of the energy barrier associated with a transition state, e.g.
spins to perform a collective rotation from one energy basin to
another.
The implementation in LAMMPS follows the discussion in the
following paper: "(BessarabA)"_#BessarabA.
Each replica runs on a partition of one or more processors. Processor
partitions are defined at run-time using the "-partition command-line
switch"_Run_options.html. Note that if you have MPI installed, you
can run a multi-replica simulation with more replicas (partitions)
than you have physical processors, e.g you can run a 10-replica
simulation on just one or two processors. You will simply not get the
performance speed-up you would see with one or more physical
processors per replica. See the "Howto replica"_Howto_replica.html
doc page for further discussion.
NOTE: As explained below, a GNEB calculation performs a damped dynamics
minimization across all the replicas. The "spin"_min_spin.html
style minimizer has to be defined in your input script.
When a GNEB calculation is performed, it is assumed that each replica
is running the same system, though LAMMPS does not check for this.
I.e. the simulation domain, the number of magnetic atoms, the
interaction potentials, and the starting configuration when the neb
command is issued should be the same for every replica.
In a GNEB calculation each replica is connected to other replicas by
inter-replica nudging forces. These forces are imposed by the "fix
neb/spin"_fix_neb_spin.html command, which must be used in conjunction
with the neb command.
The group used to define the fix neb/spin command defines the
GNEB magnetic atoms which are the only ones that inter-replica springs
are applied to.
If the group does not include all magnetic atoms, then non-GNEB
magnetic atoms have no inter-replica springs and the torques they feel
and their precession motion is computed in the usual way due only
to other magnetic atoms within their replica.
Conceptually, the non-GNEB atoms provide a background force field for
the GNEB atoms.
Their magnetic spins can be allowed to evolve during the GNEB
minimization procedure.
The initial spin configuration for each of the replicas can be
specified in different manners via the {file-style} setting, as
discussed below. Only atomic spins whose initial coordinates should
differ from the current configuration need to be specified.
Conceptually, the initial and final configurations for the first
replica should be states on either side of an energy barrier.
As explained below, the initial configurations of intermediate
replicas can be spin coordinates interpolated in a linear fashion
between the first and last replicas. This is often adequate for
simple transitions. For more complex transitions, it may lead to slow
convergence or even bad results if the minimum energy path (MEP, see
below) of states over the barrier cannot be correctly converged to
from such an initial path. In this case, you will want to generate
initial states for the intermediate replicas that are geometrically
closer to the MEP and read them in.
:line
For a {file-style} setting of {final}, a filename is specified which
contains atomic and spin coordinates for zero or more atoms, in the
format described below.
For each atom that appears in the file, the new coordinates are
assigned to that atom in the final replica. Each intermediate replica
also assigns a new spin to that atom in an interpolated manner.
This is done by using the current direction of the spin at the starting
point and the read-in direction as the final point.
The "angular distance" between them is calculated, and the new direction
is assigned to be a fraction of the angular distance.
NOTE: The "angular distance" between the starting and final point is
evaluated in the geodesic sense, as described in
"(BessarabA)"_#BessarabA.
NOTE: The angular interpolation between the starting and final point
is achieved using Rodrigues formula:
:c,image(Eqs/neb_spin_rodrigues_formula.jpg)
where m_i^I is the initial spin configuration for the spin i,
omega_i^nu is a rotation angle defined as:
:c,image(Eqs/neb_spin_angle.jpg)
with nu the image number, Q the total number of images, and
omega_i the total rotation between the initial and final spins.
k_i defines a rotation axis such as:
:c,image(Eqs/neb_spin_k.jpg)
if the initial and final spins are not aligned.
If the initial and final spins are aligned, then their cross
product is null, and the expression above does not apply.
If they point toward the same direction, the intermediate images
conserve the same orientation.
If the initial and final spins are aligned, but point toward
opposite directions, an arbitrary rotation vector belonging to
the plane perpendicular to initial and final spins is chosen.
In this case, a warning message is displayed.
For a {file-style} setting of {each}, a filename is specified which is
assumed to be unique to each replica.
See the "neb"_neb.html documentation page for more information about this
option.
For a {file-style} setting of {none}, no filename is specified. Each
replica is assumed to already be in its initial configuration at the
time the neb command is issued. This allows each replica to define
its own configuration by reading a replica-specific data or restart or
dump file, via the "read_data"_read_data.html,
"read_restart"_read_restart.html, or "read_dump"_read_dump.html
commands. The replica-specific names of these files can be specified
as in the discussion above for the {each} file-style. Also see the
section below for how a NEB calculation can produce restart files, so
that a long calculation can be restarted if needed.
NOTE: None of the {file-style} settings change the initial
configuration of any atom in the first replica. The first replica
must thus be in the correct initial configuration at the time the neb
command is issued.
:line
A NEB calculation proceeds in two stages, each of which is a
minimization procedure, performed via damped dynamics. To enable
this, you must first define a damped spin dynamics
"min_style"_min_style.html, using the {spin} style (see
"min_spin"_min_spin.html for more information).
The other styles cannot be used, since they relax the lattice
degrees of freedom instead of the spins.
The minimizer tolerances for energy and force are set by {etol} and
{ttol}, the same as for the "minimize"_minimize.html command.
A non-zero {etol} means that the GNEB calculation will terminate if the
energy criterion is met by every replica. The energies being compared
to {etol} do not include any contribution from the inter-replica
nudging forces, since these are non-conservative. A non-zero {ttol}
means that the GNEB calculation will terminate if the torque criterion
is met by every replica. The torques being compared to {ttol} include
the inter-replica nudging forces.
The maximum number of iterations in each stage is set by {N1} and
{N2}. These are effectively timestep counts since each iteration of
damped dynamics is like a single timestep in a dynamics
"run"_run.html. During both stages, the potential energy of each
replica and its normalized distance along the reaction path (reaction
coordinate RD) will be printed to the screen and log file every
{Nevery} timesteps. The RD is 0 and 1 for the first and last replica.
For intermediate replicas, it is the cumulative angular distance
(normalized by the total cumulative angular distance) between adjacent
replicas, where "distance" is defined as the length of the 3N-vector of
the geodesic distances in spin coordinates, with N the number of
GNEB spins involved (see equation (13) in "(BessarabA)"_#BessarabA).
These outputs allow you to monitor NEB's progress in
finding a good energy barrier. {N1} and {N2} must both be multiples
of {Nevery}.
In the first stage of GNEB, the set of replicas should converge toward
a minimum energy path (MEP) of conformational states that transition
over a barrier. The MEP for a transition is defined as a sequence of
3N-dimensional spin states, each of which has a potential energy
gradient parallel to the MEP itself.
The configuration of highest energy along a MEP corresponds to a saddle
point. The replica states will also be roughly equally spaced along
the MEP due to the inter-replica nudging force added by the
"fix neb"_fix_neb.html command.
In the second stage of GNEB, the replica with the highest energy is
selected and the inter-replica forces on it are converted to a force
that drives its spin coordinates to the top or saddle point of the
barrier, via the barrier-climbing calculation described in
"(BessarabA)"_#BessarabA. As before, the other replicas rearrange
themselves along the MEP so as to be roughly equally spaced.
When both stages are complete, if the GNEB calculation was successful,
the configurations of the replicas should be along (close to) the MEP
and the replica with the highest energy should be a spin
configuration at (close to) the saddle point of the transition. The
potential energies for the set of replicas represents the energy
profile of the transition along the MEP.
:line
An atom map must be defined which it is not by default for "atom_style
atomic"_atom_style.html problems. The "atom_modify
map"_atom_modify.html command can be used to do this.
An initial value can be defined for the timestep. Although, the {spin}
minimization algorithm is an adaptive timestep methodology, so that
this timestep is likely to evolve during the calculation.
The minimizers in LAMMPS operate on all spins in your system, even
non-GNEB atoms, as defined above.
:line
Each file read by the neb/spin command containing spin coordinates used
to initialize one or more replicas must be formatted as follows.
The file can be ASCII text or a gzipped text file (detected by a .gz
suffix). The file can contain initial blank lines or comment lines
starting with "#" which are ignored. The first non-blank, non-comment
line should list N = the number of lines to follow. The N successive
lines contain the following information:
ID1 g1 x1 y1 z1 sx1 sy1 sz1
ID2 g2 x2 y2 z2 sx2 sy2 sz2
...
IDN gN yN zN sxN syN szN :pre
The fields are the atom ID, the norm of the associated magnetic spin,
followed by the {x,y,z} coordinates and the {sx,sy,sz} spin coordinates.
The lines can be listed in any order. Additional trailing information on
the line is OK, such as a comment.
Note that for a typical GNEB calculation you do not need to specify
initial spin coordinates for very many atoms to produce differing starting
and final replicas whose intermediate replicas will converge to the
energy barrier. Typically only new spin coordinates for atoms
geometrically near the barrier need be specified.
Also note there is no requirement that the atoms in the file
correspond to the GNEB atoms in the group defined by the "fix
neb"_fix_neb.html command. Not every GNEB atom need be in the file,
and non-GNEB atoms can be listed in the file.
:line
Four kinds of output can be generated during a GNEB calculation: energy
barrier statistics, thermodynamic output by each replica, dump files,
and restart files.
When running with multiple partitions (each of which is a replica in
this case), the print-out to the screen and master log.lammps file
contains a line of output, printed once every {Nevery} timesteps. It
contains the timestep, the maximum torque per replica, the maximum
torque per atom (in any replica), potential gradients in the initial,
final, and climbing replicas, the forward and backward energy
barriers, the total reaction coordinate (RDT), and the normalized
reaction coordinate and potential energy of each replica.
The "maximum torque per replica" is the two-norm of the
3N-length vector given by the cross product of a spin by its
precession vector omega, in each replica, maximized across replicas,
which is what the {ttol} setting is checking against. In this case, N is
all the atoms in each replica. The "maximum torque per atom" is the
maximum torque component of any atom in any replica. The potential
gradients are the two-norm of the 3N-length magnetic precession vector
solely due to the interaction potential i.e. without adding in
inter-replica forces, and projected along the path tangent (as detailed
in Appendix D of "(BessarabA)"_#BessarabA).
The "reaction coordinate" (RD) for each replica is the two-norm of the
3N-length vector of geodesic distances between its spins and the preceding
replica's spins (see equation (13) of "(BessarabA)"_#BessarabA), added to
the RD of the preceding replica. The RD of the first replica RD1 = 0.0;
the RD of the final replica RDN = RDT, the total reaction coordinate.
The normalized RDs are divided by RDT, so that they form a monotonically
increasing sequence from zero to one. When computing RD, N only includes
the spins being operated on by the fix neb/spin command.
The forward (reverse) energy barrier is the potential energy of the
highest replica minus the energy of the first (last) replica.
Supplementary information for all replicas can be printed out to the
screen and master log.lammps file by adding the verbose keyword. This
information include the following.
The "GradVidottan" are the projections of the potential gradient for
the replica i on its tangent vector (as detailed in Appendix D of
"(BessarabA)"_#BessarabA).
The "DNi" are the non normalized geodesic distances (see equation (13)
of "(BessarabA)"_#BessarabA), between a replica i and the next replica
i+1. For the last replica, this distance is not defined and a "NAN"
value is the corresponding output.
When a NEB calculation does not converge properly, the supplementary
information can help understanding what is going wrong.
When running on multiple partitions, LAMMPS produces additional log
files for each partition, e.g. log.lammps.0, log.lammps.1, etc. For a
GNEB calculation, these contain the thermodynamic output for each
replica.
If "dump"_dump.html commands in the input script define a filename
that includes a {universe} or {uloop} style "variable"_variable.html,
then one dump file (per dump command) will be created for each
replica. At the end of the GNEB calculation, the final snapshot in
each file will contain the sequence of snapshots that transition the
system over the energy barrier. Earlier snapshots will show the
convergence of the replicas to the MEP.
Likewise, "restart"_restart.html filenames can be specified with a
{universe} or {uloop} style "variable"_variable.html, to generate
restart files for each replica. These may be useful if the GNEB
calculation fails to converge properly to the MEP, and you wish to
restart the calculation from an intermediate point with altered
parameters.
A c file script in provided in the tool/spin/interpolate_gneb
directory, that interpolates the MEP given the information provided
by the verbose output option (as detailed in Appendix D of
"(BessarabA)"_#BessarabA).
:line
[Restrictions:]
This command can only be used if LAMMPS was built with the SPIN
package. See the "Build package"_Build_package.html doc
page for more info.
:line
[Related commands:]
"min/spin"_min_spin.html, "fix neb/spin"_fix_neb_spin.html
[Default:]
none
:line
:link(BessarabA)
[(BessarabA)] Bessarab, Uzdin, Jonsson, Comp Phys Comm, 196,
335-347 (2015).

793
doc/src/pair_granular.txt Normal file
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<script type="text/javascript"
src="https://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML">
</script>
<script type="text/x-mathjax-config">
MathJax.Hub.Config({ TeX: { equationNumbers: {autoNumber: "AMS"} } });
</script>
"LAMMPS WWW Site"_lws - "LAMMPS Documentation"_ld - "LAMMPS Commands"_lc :c
:link(lws,http://lammps.sandia.gov)
:link(ld,Manual.html)
:link(lc,Commands_all.html)
:line
pair_style granular command :h3
[Syntax:]
pair_style granular cutoff :pre
cutoff = global cutoff (optional). See discussion below. :ul
[Examples:]
pair_style granular
pair_coeff * * hooke 1000.0 50.0 tangential linear_nohistory 1.0 0.4 damping mass_velocity :pre
pair_style granular
pair_coeff * * hooke 1000.0 50.0 tangential linear_history 500.0 1.0 0.4 damping mass_velocity :pre
pair_style granular
pair_coeff * * hertz 1000.0 50.0 tangential mindlin 1000.0 1.0 0.4 :pre
pair_style granular
pair_coeff * * hertz/material 1e8 0.3 0.3 tangential mindlin_rescale NULL 1.0 0.4 damping tsuji :pre
pair_style granular
pair_coeff 1 * jkr 1000.0 500.0 0.3 10 tangential mindlin 800.0 1.0 0.5 rolling sds 500.0 200.0 0.5 twisting marshall
pair_coeff 2 2 hertz 200.0 100.0 tangential linear_history 300.0 1.0 0.1 rolling sds 200.0 100.0 0.1 twisting marshall :pre
pair_style granular
pair_coeff 1 1 dmt 1000.0 50.0 0.3 0.0 tangential mindlin NULL 0.5 0.5 rolling sds 500.0 200.0 0.5 twisting marshall
pair_coeff 2 2 dmt 1000.0 50.0 0.3 10.0 tangential mindlin NULL 0.5 0.1 rolling sds 500.0 200.0 0.1 twisting marshall :pre
[Description:]
The {granular} styles support a variety of options for the normal,
tangential, rolling and twisting forces resulting from contact between
two granular particles. This expands on the options offered by the
"pair gran/*"_pair_gran.html pair styles. The total computed forces
and torques are the sum of various models selected for the normal,
tangential, rolling and twisting modes of motion.
All model choices and parameters are entered in the
"pair_coeff"_pair_coeff.html command, as described below. Unlike
e.g. "pair gran/hooke"_pair_gran.html, coefficient values are not
global, but can be set to different values for different combinations
of particle types, as determined by the "pair_coeff"_pair_coeff.html
command. If the contact model choice is the same for two particle
types, the mixing for the cross-coefficients can be carried out
automatically. This is shown in the last example, where model
choices are the same for type 1 - type 1 as for type 2 - type2
interactions, but coefficients are different. In this case, the
mixed coefficients for type 1 - type 2 interactions can be determined from
mixing rules discussed below. For additional flexibility,
coefficients as well as model forms can vary between particle types,
as shown in the fourth example: type 1 - type 1 interactions are based
on a Johnson-Kendall-Roberts normal contact model and 2-2 interactions
are based on a DMT cohesive model (see below). In that example, 1-1
and 2-2 interactions have different model forms, in which case mixing of
coefficients cannot be determined, so 1-2 interactions must be
explicitly defined via the {pair_coeff 1 *} command, otherwise an
error would result.
:line
The first required keyword for the {pair_coeff} command is the normal
contact model. Currently supported options for normal contact models
and their required arguments are:
{hooke} : \(k_n\), \(\eta_\{n0\}\) (or \(e\))
{hertz} : \(k_n\), \(\eta_\{n0\}\) (or \(e\))
{hertz/material} : E, \(\eta_\{n0\}\) (or \(e\)), \(\nu\)
{dmt} : E, \(\eta_\{n0\}\) (or \(e\)), \(\nu\), \(\gamma\)
{jkr} : E, \(\eta_\{n0\}\) (or \(e\)), \(\nu\), \(\gamma\) :ol
Here, \(k_n\) is spring stiffness (with units that depend on model
choice, see below); \(\eta_\{n0\}\) is a damping prefactor (or, in its
place a coefficient of restitution \(e\), depending on the choice of
damping mode, see below); E is Young's modulus in units of
{force}/{length}^2, i.e. {pressure}; \(\nu\) is Poisson's ratio and
\(\gamma\) is a surface energy density, in units of
{energy}/{length}^2.
For the {hooke} model, the normal, elastic component of force acting
on particle {i} due to contact with particle {j} is given by:
\begin\{equation\}
\mathbf\{F\}_\{ne, Hooke\} = k_N \delta_\{ij\} \mathbf\{n\}
\end\{equation\}
Where \(\delta = R_i + R_j - \|\mathbf\{r\}_\{ij\}\|\) is the particle
overlap, \(R_i, R_j\) are the particle radii, \(\mathbf\{r\}_\{ij\} =
\mathbf\{r\}_i - \mathbf\{r\}_j\) is the vector separating the two
particle centers (note the i-j ordering so that \(F_\{ne\}\) is
positive for repulsion), and \(\mathbf\{n\} =
\frac\{\mathbf\{r\}_\{ij\}\}\{\|\mathbf\{r\}_\{ij\}\|\}\). Therefore,
for {hooke}, the units of the spring constant \(k_n\) are
{force}/{distance}, or equivalently {mass}/{time^2}.
For the {hertz} model, the normal component of force is given by:
\begin\{equation\}
\mathbf\{F\}_\{ne, Hertz\} = k_N R_\{eff\}^\{1/2\}\delta_\{ij\}^\{3/2\} \mathbf\{n\}
\end\{equation\}
Here, \(R_\{eff\} = \frac\{R_i R_j\}\{R_i + R_j\}\) is the effective
radius, denoted for simplicity as {R} from here on. For {hertz}, the
units of the spring constant \(k_n\) are {force}/{length}^2, or
equivalently {pressure}.
For the {hertz/material} model, the force is given by:
\begin\{equation\}
\mathbf\{F\}_\{ne, Hertz/material\} = \frac\{4\}\{3\} E_\{eff\} R_\{eff\}^\{1/2\}\delta_\{ij\}^\{3/2\} \mathbf\{n\}
\end\{equation\}
Here, \(E_\{eff\} = E = \left(\frac\{1-\nu_i^2\}\{E_i\} +
\frac\{1-\nu_j^2\}\{E_j\}\right)^\{-1\}\) is the effective Young's
modulus, with \(\nu_i, \nu_j \) the Poisson ratios of the particles of
types {i} and {j}. Note that if the elastic modulus and the shear
modulus of the two particles are the same, the {hertz/material} model
is equivalent to the {hertz} model with \(k_N = 4/3 E_\{eff\}\)
The {dmt} model corresponds to the
"(Derjaguin-Muller-Toporov)"_#DMT1975 cohesive model, where the force
is simply Hertz with an additional attractive cohesion term:
\begin\{equation\}
\mathbf\{F\}_\{ne, dmt\} = \left(\frac\{4\}\{3\} E R^\{1/2\}\delta_\{ij\}^\{3/2\} - 4\pi\gamma R\right)\mathbf\{n\}
\end\{equation\}
The {jkr} model is the "(Johnson-Kendall-Roberts)"_#JKR1971 model,
where the force is computed as:
\begin\{equation\}
\label\{eq:force_jkr\}
\mathbf\{F\}_\{ne, jkr\} = \left(\frac\{4Ea^3\}\{3R\} - 2\pi a^2\sqrt\{\frac\{4\gamma E\}\{\pi a\}\}\right)\mathbf\{n\}
\end\{equation\}
Here, {a} is the radius of the contact zone, related to the overlap
\(\delta\) according to:
\begin\{equation\}
\delta = a^2/R - 2\sqrt\{\pi \gamma a/E\}
\end\{equation\}
LAMMPS internally inverts the equation above to solve for {a} in terms
of \(\delta\), then solves for the force in the previous
equation. Additionally, note that the JKR model allows for a tensile
force beyond contact (i.e. for \(\delta < 0\)), up to a maximum of
\(3\pi\gamma R\) (also known as the 'pull-off' force). Note that this
is a hysteretic effect, where particles that are not contacting
initially will not experience force until they come into contact
\(\delta \geq 0\); as they move apart and (\(\delta < 0\)), they
experience a tensile force up to \(3\pi\gamma R\), at which point they
lose contact.
:line
In addition, the normal force is augmented by a damping term of the
following general form:
\begin\{equation\}
\mathbf\{F\}_\{n,damp\} = -\eta_n \mathbf\{v\}_\{n,rel\}
\end\{equation\}
Here, \(\mathbf\{v\}_\{n,rel\} = (\mathbf\{v\}_j - \mathbf\{v\}_i)
\cdot \mathbf\{n\}\) is the component of relative velocity along
\(\mathbf\{n\}\).
The optional {damping} keyword to the {pair_coeff} command followed by
a keyword determines the model form of the damping factor \(\eta_n\),
and the interpretation of the \(\eta_\{n0\}\) or \(e\) coefficients
specified as part of the normal contact model settings. The {damping}
keyword and corresponding model form selection may be appended
anywhere in the {pair coeff} command. Note that the choice of damping
model affects both the normal and tangential damping (and depending on
other settings, potentially also the twisting damping). The options
for the damping model currently supported are:
{velocity}
{mass_velocity}
{viscoelastic}
{tsuji} :ol
If the {damping} keyword is not specified, the {viscoelastic} model is
used by default.
For {damping velocity}, the normal damping is simply equal to the
user-specified damping coefficient in the {normal} model:
\begin\{equation\}
\eta_n = \eta_\{n0\}
\end\{equation\}
Here, \(\eta_\{n0\}\) is the damping coefficient specified for the normal
contact model, in units of {mass}/{time}.
For {damping mass_velocity}, the normal damping is given by:
\begin\{equation\}
\eta_n = \eta_\{n0\} m_\{eff\}
\end\{equation\}
Here, \(\eta_\{n0\}\) is the damping coefficient specified for the normal
contact model, in units of {mass}/{time} and
\(m_\{eff\} = m_i m_j/(m_i + m_j)\) is the effective mass.
Use {damping mass_velocity} to reproduce the damping behavior of
{pair gran/hooke/*}.
The {damping viscoelastic} model is based on the viscoelastic
treatment of "(Brilliantov et al)"_#Brill1996, where the normal
damping is given by:
\begin\{equation\}
\eta_n = \eta_\{n0\}\ a m_\{eff\}
\end\{equation\}
Here, {a} is the contact radius, given by \(a =\sqrt\{R\delta\}\)
for all models except {jkr}, for which it is given implicitly according
to \(\delta = a^2/R - 2\sqrt\{\pi \gamma a/E\}\). For {damping viscoelastic},
\(\eta_\{n0\}\) is in units of 1/({time}*{distance}).
The {tsuji} model is based on the work of "(Tsuji et
al)"_#Tsuji1992. Here, the damping coefficient specified as part of
the normal model is interpreted as a restitution coefficient
\(e\). The damping constant \(\eta_n\) is given by:
\begin\{equation\}
\eta_n = \alpha (m_\{eff\}k_n)^\{1/2\}
\end\{equation\}
For normal contact models based on material parameters, \(k_n =
4/3Ea\). The parameter \(\alpha\) is related to the restitution
coefficient {e} according to:
\begin\{equation\}
\alpha = 1.2728-4.2783e+11.087e^2-22.348e^3+27.467e^4-18.022e^5+4.8218e^6
\end\{equation\}
The dimensionless coefficient of restitution \(e\) specified as part
of the normal contact model parameters should be between 0 and 1, but
no error check is performed on this.
The total normal force is computed as the sum of the elastic and
damping components:
\begin\{equation\}
\mathbf\{F\}_n = \mathbf\{F\}_\{ne\} + \mathbf\{F\}_\{n,damp\}
\end\{equation\}
:line
The {pair_coeff} command also requires specification of the tangential
contact model. The required keyword {tangential} is expected, followed
by the model choice and associated parameters. Currently supported
tangential model choices and their expected parameters are as follows:
{linear_nohistory} : \(x_\{\gamma,t\}\), \(\mu_s\)
{linear_history} : \(k_t\), \(x_\{\gamma,t\}\), \(\mu_s\)
{mindlin} : \(k_t\) or NULL, \(x_\{\gamma,t\}\), \(\mu_s\)
{mindlin_rescale} : \(k_t\) or NULL, \(x_\{\gamma,t\}\), \(\mu_s\) :ol
Here, \(x_\{\gamma,t\}\) is a dimensionless multiplier for the normal
damping \(\eta_n\) that determines the magnitude of the tangential
damping, \(\mu_t\) is the tangential (or sliding) friction
coefficient, and \(k_t\) is the tangential stiffness coefficient.
For {tangential linear_nohistory}, a simple velocity-dependent Coulomb
friction criterion is used, which mimics the behavior of the {pair
gran/hooke} style. The tangential force (\mathbf\{F\}_t\) is given by:
\begin\{equation\}
\mathbf\{F\}_t = -min(\mu_t F_\{n0\}, \|\mathbf\{F\}_\mathrm\{t,damp\}\|) \mathbf\{t\}
\end\{equation\}
The tangential damping force \(\mathbf\{F\}_\mathrm\{t,damp\}\) is given by:
\begin\{equation\}
\mathbf\{F\}_\mathrm\{t,damp\} = -\eta_t \mathbf\{v\}_\{t,rel\}
\end\{equation\}
The tangential damping prefactor \(\eta_t\) is calculated by scaling
the normal damping \(\eta_n\) (see above):
\begin\{equation\}
\eta_t = -x_\{\gamma,t\} \eta_n
\end\{equation\}
The normal damping prefactor \(\eta_n\) is determined by the choice of
the {damping} keyword, as discussed above. Thus, the {damping}
keyword also affects the tangential damping. The parameter
\(x_\{\gamma,t\}\) is a scaling coefficient. Several works in the
literature use \(x_\{\gamma,t\} = 1\) ("Marshall"_#Marshall2009,
"Tsuji et al"_#Tsuji1992, "Silbert et al"_#Silbert2001). The relative
tangential velocity at the point of contact is given by
\(\mathbf\{v\}_\{t, rel\} = \mathbf\{v\}_\{t\} - (R_i\Omega_i +
R_j\Omega_j) \times \mathbf\{n\}\), where \(\mathbf\{v\}_\{t\} =
\mathbf\{v\}_r - \mathbf\{v\}_r\cdot\mathbf\{n\}\), \(\mathbf\{v\}_r =
\mathbf\{v\}_j - \mathbf\{v\}_i\). The direction of the applied force
is \(\mathbf\{t\} =
\mathbf\{v_\{t,rel\}\}/\|\mathbf\{v_\{t,rel\}\}\|\).
The normal force value \(F_\{n0\}\) used to compute the critical force
depends on the form of the contact model. For non-cohesive models
({hertz}, {hertz/material}, {hooke}), it is given by the magnitude of
the normal force:
\begin\{equation\}
F_\{n0\} = \|\mathbf\{F\}_n\|
\end\{equation\}
For cohesive models such as {jkr} and {dmt}, the critical force is
adjusted so that the critical tangential force approaches \(\mu_t
F_\{pulloff\}\), see "Marshall"_#Marshall2009, equation 43, and
"Thornton"_#Thornton1991. For both models, \(F_\{n0\}\) takes the
form:
\begin\{equation\}
F_\{n0\} = \|\mathbf\{F\}_ne + 2 F_\{pulloff\}\|
\end\{equation\}
Where \(F_\{pulloff\} = 3\pi \gamma R \) for {jkr}, and
\(F_\{pulloff\} = 4\pi \gamma R \) for {dmt}.
The remaining tangential options all use accumulated tangential
displacement (i.e. contact history). This is discussed below in the
context of the {linear_history} option, but the same treatment of the
accumulated displacement applies to the other options as well.
For {tangential linear_history}, the tangential force is given by:
\begin\{equation\}
\mathbf\{F\}_t = -min(\mu_t F_\{n0\}, \|-k_t\mathbf\{\xi\} + \mathbf\{F\}_\mathrm\{t,damp\}\|) \mathbf\{t\}
\end\{equation\}
Here, \(\mathbf\{\xi\}\) is the tangential displacement accumulated
during the entire duration of the contact:
\begin\{equation\}
\mathbf\{\xi\} = \int_\{t0\}^t \mathbf\{v\}_\{t,rel\}(\tau) \mathrm\{d\}\tau
\end\{equation\}
This accumulated tangential displacement must be adjusted to account
for changes in the frame of reference of the contacting pair of
particles during contact. This occurs due to the overall motion of the
contacting particles in a rigid-body-like fashion during the duration
of the contact. There are two modes of motion that are relevant: the
'tumbling' rotation of the contacting pair, which changes the
orientation of the plane in which tangential displacement occurs; and
'spinning' rotation of the contacting pair about the vector connecting
their centers of mass (\(\mathbf\{n\}\)). Corrections due to the
former mode of motion are made by rotating the accumulated
displacement into the plane that is tangential to the contact vector
at each step, or equivalently removing any component of the tangential
displacement that lies along \(\mathbf\{n\}\), and rescaling to
preserve the magnitude. This follows the discussion in
"Luding"_#Luding2008, see equation 17 and relevant discussion in that
work:
\begin\{equation\}
\mathbf\{\xi\} = \left(\mathbf\{\xi'\} - (\mathbf\{n\} \cdot \mathbf\{\xi'\})\mathbf\{n\}\right) \frac\{\|\mathbf\{\xi'\}\|\}\{\|\mathbf\{\xi'\}\| - \mathbf\{n\}\cdot\mathbf\{\xi'\}\}
\label\{eq:rotate_displacements\}
\end\{equation\}
Here, \(\mathbf\{\xi'\}\) is the accumulated displacement prior to the
current time step and \(\mathbf\{\xi\}\) is the corrected
displacement. Corrections to the displacement due to the second mode
of motion described above (rotations about \(\mathbf\{n\}\)) are not
currently implemented, but are expected to be minor for most
simulations.
Furthermore, when the tangential force exceeds the critical force, the
tangential displacement is re-scaled to match the value for the
critical force (see "Luding"_#Luding2008, equation 20 and related
discussion):
\begin\{equation\}
\mathbf\{\xi\} = -\frac\{1\}\{k_t\}\left(\mu_t F_\{n0\}\mathbf\{t\} + \mathbf\{F\}_\{t,damp\}\right)
\end\{equation\}
The tangential force is added to the total normal force (elastic plus
damping) to produce the total force on the particle. The tangential
force also acts at the contact point (defined as the center of the
overlap region) to induce a torque on each particle according to:
\begin\{equation\}
\mathbf\{\tau\}_i = -(R_i - 0.5 \delta) \mathbf\{n\} \times \mathbf\{F\}_t
\end\{equation\}
\begin\{equation\}
\mathbf\{\tau\}_j = -(R_j - 0.5 \delta) \mathbf\{n\} \times \mathbf\{F\}_t
\end\{equation\}
For {tangential mindlin}, the "Mindlin"_#Mindlin1949 no-slip solution is used, which differs from the {linear_history}
option by an additional factor of {a}, the radius of the contact region. The tangential force is given by:
\begin\{equation\}
\mathbf\{F\}_t = -min(\mu_t F_\{n0\}, \|-k_t a \mathbf\{\xi\} + \mathbf\{F\}_\mathrm\{t,damp\}\|) \mathbf\{t\}
\end\{equation\}
Here, {a} is the radius of the contact region, given by \(a = \delta
R\) for all normal contact models, except for {jkr}, where it is given
implicitly by \(\delta = a^2/R - 2\sqrt\{\pi \gamma a/E\}\), see
discussion above. To match the Mindlin solution, one should set \(k_t
= 8G\), where \(G\) is the shear modulus, related to Young's modulus
\(E\) by \(G = E/(2(1+\nu))\), where \(\nu\) is Poisson's ratio. This
can also be achieved by specifying {NULL} for \(k_t\), in which case a
normal contact model that specifies material parameters \(E\) and
\(\nu\) is required (e.g. {hertz/material}, {dmt} or {jkr}). In this
case, mixing of the shear modulus for different particle types {i} and
{j} is done according to:
\begin\{equation\}
1/G = 2(2-\nu_i)(1+\nu_i)/E_i + 2(2-\nu_j)(1+\nu_j)/E_j
\end\{equation\}
The {mindlin_rescale} option uses the same form as {mindlin}, but the
magnitude of the tangential displacement is re-scaled as the contact
unloads, i.e. if \(a < a_\{t_\{n-1\}\}\):
\begin\{equation\}
\mathbf\{\xi\} = \mathbf\{\xi_\{t_\{n-1\}\}\} \frac\{a\}\{a_\{t_\{n-1\}\}\}
\end\{equation\}
Here, \(t_\{n-1\}\) indicates the value at the previous time
step. This rescaling accounts for the fact that a decrease in the
contact area upon unloading leads to the contact being unable to
support the previous tangential loading, and spurious energy is
created without the rescaling above ("Walton"_#WaltonPC ). See also
discussion in "Thornton et al, 2013"_#Thornton2013 , particularly
equation 18(b) of that work and associated discussion.
:line
The optional {rolling} keyword enables rolling friction, which resists
pure rolling motion of particles. The options currently supported are:
{none}
{sds} : \(k_\{roll\}\), \(\gamma_\{roll\}\), \(\mu_\{roll\}\) :ol
If the {rolling} keyword is not specified, the model defaults to {none}.
For {rolling sds}, rolling friction is computed via a
spring-dashpot-slider, using a 'pseudo-force' formulation, as detailed
by "Luding"_#Luding2008. Unlike the formulation in
"Marshall"_#Marshall2009, this allows for the required adjustment of
rolling displacement due to changes in the frame of reference of the
contacting pair. The rolling pseudo-force is computed analogously to
the tangential force:
\begin\{equation\}
\mathbf\{F\}_\{roll,0\} = k_\{roll\} \mathbf\{\xi\}_\{roll\} - \gamma_\{roll\} \mathbf\{v\}_\{roll\}
\end\{equation\}
Here, \(\mathbf\{v\}_\{roll\} = -R(\mathbf\{\Omega\}_i -
\mathbf\{\Omega\}_j) \times \mathbf\{n\}\) is the relative rolling
velocity, as given in "Wang et al"_#Wang2015 and
"Luding"_#Luding2008. This differs from the expressions given by "Kuhn
and Bagi"_#Kuhn2004 and used in "Marshall"_#Marshall2009; see "Wang et
al"_#Wang2015 for details. The rolling displacement is given by:
\begin\{equation\}
\mathbf\{\xi\}_\{roll\} = \int_\{t_0\}^t \mathbf\{v\}_\{roll\} (\tau) \mathrm\{d\} \tau
\end\{equation\}
A Coulomb friction criterion truncates the rolling pseudo-force if it
exceeds a critical value:
\begin\{equation\}
\mathbf\{F\}_\{roll\} = min(\mu_\{roll\} F_\{n,0\}, \|\mathbf\{F\}_\{roll,0\}\|)\mathbf\{k\}
\end\{equation\}
Here, \(\mathbf\{k\} =
\mathbf\{v\}_\{roll\}/\|\mathbf\{v\}_\{roll\}\|\) is the direction of
the pseudo-force. As with tangential displacement, the rolling
displacement is rescaled when the critical force is exceeded, so that
the spring length corresponds the critical force. Additionally, the
displacement is adjusted to account for rotations of the frame of
reference of the two contacting particles in a manner analogous to the
tangential displacement.
The rolling pseudo-force does not contribute to the total force on
either particle (hence 'pseudo'), but acts only to induce an equal and
opposite torque on each particle, according to:
\begin\{equation\}
\tau_\{roll,i\} = R_\{eff\} \mathbf\{n\} \times \mathbf\{F\}_\{roll\}
\end\{equation\}
\begin\{equation\}
\tau_\{roll,j\} = -\tau_\{roll,i\}
\end\{equation\}
:line
The optional {twisting} keyword enables twisting friction, which
resists rotation of two contacting particles about the vector
\(\mathbf\{n\}\) that connects their centers. The options currently
supported are:
{none}
{sds} : \(k_\{twist\}\), \(\gamma_\{twist\}\), \(\mu_\{twist\}\)
{marshall} :ol
If the {twisting} keyword is not specified, the model defaults to {none}.
For both {twisting sds} and {twisting marshall}, a history-dependent
spring-dashpot-slider is used to compute the twisting torque. Because
twisting displacement is a scalar, there is no need to adjust for
changes in the frame of reference due to rotations of the particle
pair. The formulation in "Marshall"_#Marshall2009 therefore provides
the most straightforward treatment:
\begin\{equation\}
\tau_\{twist,0\} = -k_\{twist\}\xi_\{twist\} - \gamma_\{twist\}\Omega_\{twist\}
\end\{equation\}
Here \(\xi_\{twist\} = \int_\{t_0\}^t \Omega_\{twist\} (\tau)
\mathrm\{d\}\tau\) is the twisting angular displacement, and
\(\Omega_\{twist\} = (\mathbf\{\Omega\}_i - \mathbf\{\Omega\}_j) \cdot
\mathbf\{n\}\) is the relative twisting angular velocity. The torque
is then truncated according to:
\begin\{equation\}
\tau_\{twist\} = min(\mu_\{twist\} F_\{n,0\}, \tau_\{twist,0\})
\end\{equation\}
Similar to the sliding and rolling displacement, the angular
displacement is rescaled so that it corresponds to the critical value
if the twisting torque exceeds this critical value:
\begin\{equation\}
\xi_\{twist\} = \frac\{1\}\{k_\{twist\}\} (\mu_\{twist\} F_\{n,0\}sgn(\Omega_\{twist\}) - \gamma_\{twist\}\Omega_\{twist\})
\end\{equation\}
For {twisting sds}, the coefficients \(k_\{twist\}, \gamma_\{twist\}\)
and \(\mu_\{twist\}\) are simply the user input parameters that follow
the {twisting sds} keywords in the {pair_coeff} command.
For {twisting_marshall}, the coefficients are expressed in terms of
sliding friction coefficients, as discussed in
"Marshall"_#Marshall2009 (see equations 32 and 33 of that work):
\begin\{equation\}
k_\{twist\} = 0.5k_ta^2
\end\{equation\}
\begin\{equation\}
\eta_\{twist\} = 0.5\eta_ta^2
\end\{equation\}
\begin\{equation\}
\mu_\{twist\} = \frac\{2\}\{3\}a\mu_t
\end\{equation\}
Finally, the twisting torque on each particle is given by:
\begin\{equation\}
\mathbf\{\tau\}_\{twist,i\} = \tau_\{twist\}\mathbf\{n\}
\end\{equation\}
\begin\{equation\}
\mathbf\{\tau\}_\{twist,j\} = -\mathbf\{\tau\}_\{twist,i\}
\end\{equation\}
:line
The {granular} pair style can reproduce the behavior of the
{pair gran/*} styles with the appropriate settings (some very
minor differences can be expected due to corrections in
displacement history frame-of-reference, and the application
of the torque at the center of the contact rather than
at each particle). The first example above
is equivalent to {pair gran/hooke 1000.0 NULL 50.0 50.0 0.4 1}.
The second example is equivalent to
{pair gran/hooke/history 1000.0 500.0 50.0 50.0 0.4 1}.
The third example is equivalent to
{pair gran/hertz/history 1000.0 500.0 50.0 50.0 0.4 1}.
:line
LAMMPS automatically sets pairwise cutoff values for {pair_style
granular} based on particle radii (and in the case of {jkr} pull-off
distances). In the vast majority of situations, this is adequate.
However, a cutoff value can optionally be appended to the {pair_style
granular} command to specify a global cutoff (i.e. a cutoff for all
atom types). Additionally, the optional {cutoff} keyword can be passed
to the {pair_coeff} command, followed by a cutoff value. This will
set a pairwise cutoff for the atom types in the {pair_coeff} command.
These options may be useful in some rare cases where the automatic
cutoff determination is not sufficient, e.g. if particle diameters
are being modified via the {fix adapt} command. In that case, the
global cutoff specified as part of the {pair_style granular} command
is applied to all atom types, unless it is overridden for a given atom
type combination by the {cutoff} value specified in the {pair coeff}
command. If {cutoff} is only specified in the {pair coeff} command
and no global cutoff is appended to the {pair_style granular} command,
then LAMMPS will use that cutoff for the specified atom type
combination, and automatically set pairwise cutoffs for the remaining
atom types.
:line
Styles with a {gpu}, {intel}, {kk}, {omp}, or {opt} suffix are
functionally the same as the corresponding style without the suffix.
They have been optimized to run faster, depending on your available
hardware, as discussed on the "Speed packages"_Speed_packages.html doc
page. The accelerated styles take the same arguments and should
produce the same results, except for round-off and precision issues.
These accelerated styles are part of the GPU, USER-INTEL, KOKKOS,
USER-OMP and OPT packages, respectively. They are only enabled if
LAMMPS was built with those packages. See the "Build
package"_Build_package.html doc page for more info.
You can specify the accelerated styles explicitly in your input script
by including their suffix, or you can use the "-suffix command-line
switch"_Run_options.html when you invoke LAMMPS, or you can use the
"suffix"_suffix.html command in your input script.
See the "Speed packages"_Speed_packages.html doc page for more
instructions on how to use the accelerated styles effectively.
:line
[Mixing, shift, table, tail correction, restart, rRESPA info]:
The "pair_modify"_pair_modify.html mix, shift, table, and tail options
are not relevant for granular pair styles.
Mixing of coefficients is carried out using geometric averaging for
most quantities, e.g. if friction coefficient for type 1-type 1
interactions is set to \(\mu_1\), and friction coefficient for type
2-type 2 interactions is set to \(\mu_2\), the friction coefficient
for type1-type2 interactions is computed as \(\sqrt\{\mu_1\mu_2\}\)
(unless explicitly specified to a different value by a {pair_coeff 1 2
...} command). The exception to this is elastic modulus, only
applicable to {hertz/material}, {dmt} and {jkr} normal contact
models. In that case, the effective elastic modulus is computed as:
\begin\{equation\}
E_\{eff,ij\} = \left(\frac\{1-\nu_i^2\}\{E_i\} + \frac\{1-\nu_j^2\}\{E_j\}\right)^\{-1\}
\end\{equation\}
If the {i-j} coefficients \(E_\{ij\}\) and \(\nu_\{ij\}\) are
explicitly specified, the effective modulus is computed as:
\begin\{equation\}
E_\{eff,ij\} = \left(\frac\{1-\nu_\{ij\}^2\}\{E_\{ij\}\} + \frac\{1-\nu_\{ij\}^2\}\{E_\{ij\}\}\right)^\{-1\}
\end\{equation\}
or
\begin\{equation\}
E_\{eff,ij\} = \frac\{E_\{ij\}\}\{2(1-\nu_\{ij\})\}
\end\{equation\}
These pair styles write their information to "binary restart
files"_restart.html, so a pair_style command does not need to be
specified in an input script that reads a restart file.
These pair styles can only be used via the {pair} keyword of the
"run_style respa"_run_style.html command. They do not support the
{inner}, {middle}, {outer} keywords.
The single() function of these pair styles returns 0.0 for the energy
of a pairwise interaction, since energy is not conserved in these
dissipative potentials. It also returns only the normal component of
the pairwise interaction force. However, the single() function also
calculates 10 extra pairwise quantities. The first 3 are the
components of the tangential force between particles I and J, acting
on particle I. The 4th is the magnitude of this tangential force.
The next 3 (5-7) are the components of the rolling torque acting on
particle I. The next entry (8) is the magnitude of the rolling torque.
The next entry (9) is the magnitude of the twisting torque acting
about the vector connecting the two particle centers.
The last 3 (10-12) are the components of the vector connecting
the centers of the two particles (x_I - x_J).
These extra quantities can be accessed by the "compute
pair/local"_compute_pair_local.html command, as {p1}, {p2}, ...,
{p12}.
:line
[Restrictions:]
All the granular pair styles are part of the GRANULAR package. It is
only enabled if LAMMPS was built with that package. See the "Build
package"_Build_package.html doc page for more info.
These pair styles require that atoms store torque and angular velocity
(omega) as defined by the "atom_style"_atom_style.html. They also
require a per-particle radius is stored. The {sphere} atom style does
all of this.
This pair style requires you to use the "comm_modify vel
yes"_comm_modify.html command so that velocities are stored by ghost
atoms.
These pair styles will not restart exactly when using the
"read_restart"_read_restart.html command, though they should provide
statistically similar results. This is because the forces they
compute depend on atom velocities. See the
"read_restart"_read_restart.html command for more details.
[Related commands:]
"pair_coeff"_pair_coeff.html
"pair gran/*"_pair_gran.html
[Default:]
For the {pair_coeff} settings: {damping viscoelastic}, {rolling none},
{twisting none}.
[References:]
:link(Brill1996)
[(Brilliantov et al, 1996)] Brilliantov, N. V., Spahn, F., Hertzsch,
J. M., & Poschel, T. (1996). Model for collisions in granular
gases. Physical review E, 53(5), 5382.
:link(Tsuji1992)
[(Tsuji et al, 1992)] Tsuji, Y., Tanaka, T., & Ishida,
T. (1992). Lagrangian numerical simulation of plug flow of
cohesionless particles in a horizontal pipe. Powder technology, 71(3),
239-250.
:link(JKR1971)
[(Johnson et al, 1971)] Johnson, K. L., Kendall, K., & Roberts,
A. D. (1971). Surface energy and the contact of elastic
solids. Proc. R. Soc. Lond. A, 324(1558), 301-313.
:link(DMT1975)
[Derjaguin et al, 1975)] Derjaguin, B. V., Muller, V. M., & Toporov,
Y. P. (1975). Effect of contact deformations on the adhesion of
particles. Journal of Colloid and interface science, 53(2), 314-326.
:link(Luding2008)
[(Luding, 2008)] Luding, S. (2008). Cohesive, frictional powders:
contact models for tension. Granular matter, 10(4), 235.
:link(Marshall2009)
[(Marshall, 2009)] Marshall, J. S. (2009). Discrete-element modeling
of particulate aerosol flows. Journal of Computational Physics,
228(5), 1541-1561.
:link(Silbert2001)
[(Silbert, 2001)] Silbert, L. E., Ertas, D., Grest, G. S., Halsey,
T. C., Levine, D., & Plimpton, S. J. (2001). Granular flow down an
inclined plane: Bagnold scaling and rheology. Physical Review E,
64(5), 051302.
:link(Kuhn2004)
[(Kuhn and Bagi, 2005)] Kuhn, M. R., & Bagi, K. (2004). Contact
rolling and deformation in granular media. International journal of
solids and structures, 41(21), 5793-5820.
:link(Wang2015)
[(Wang et al, 2015)] Wang, Y., Alonso-Marroquin, F., & Guo,
W. W. (2015). Rolling and sliding in 3-D discrete element
models. Particuology, 23, 49-55.
:link(Thornton1991)
[(Thornton, 1991)] Thornton, C. (1991). Interparticle sliding in the
presence of adhesion. J. Phys. D: Appl. Phys. 24 1942
:link(Mindlin1949)
[(Mindlin, 1949)] Mindlin, R. D. (1949). Compliance of elastic bodies
in contact. J. Appl. Mech., ASME 16, 259-268.
:link(Thornton2013)
[(Thornton et al, 2013)] Thornton, C., Cummins, S. J., & Cleary,
P. W. (2013). An investigation of the comparative behaviour of
alternative contact force models during inelastic collisions. Powder
Technology, 233, 30-46.
:link(WaltonPC)
[(Otis R. Walton)] Walton, O.R., Personal Communication

View File

@ -47,11 +47,16 @@ equation can be found in "(Leven1)"_#Leven1 and "(Maaravi)"_#Maaravi2.
It is important to include all the pairs to build the neighbor list for
calculating the normals.
NOTE: This potential is intended for interactions between two different
layers of graphene or hexagonal boron nitride. Therefore, to avoid
interaction within the same layers, each layer should have a separate
molecule id and is recommended to use "full" atom style in the data
file.
NOTE: This potential (ILP) is intended for interlayer interactions between two
different layers of graphene, hexagonal boron nitride (h-BN) and their hetero-junction.
To perform a realistic simulation, this potential must be used in combination with
intra-layer potential, such as "AIREBO"_pair_airebo.html or "Tersoff"_pair_tersoff.html potential.
To keep the intra-layer properties unaffected, the interlayer interaction
within the same layers should be avoided. Hence, each atom has to have a layer
identifier such that atoms residing on the same layer interact via the
appropriate intra-layer potential and atoms residing on different layers
interact via the ILP. Here, the molecule id is chosen as the layer identifier,
thus a data file with the "full" atom style is required to use this potential.
The parameter file (e.g. BNCH.ILP), is intended for use with {metal}
"units"_units.html, with energies in meV. Two additional parameters,
@ -62,6 +67,10 @@ list for calculating the normals for each atom pair.
NOTE: The parameters presented in the parameter file (e.g. BNCH.ILP),
are fitted with taper function by setting the cutoff equal to 16.0
Angstrom. Using different cutoff or taper function should be careful.
The parameters for atoms pairs between Boron and Nitrogen are fitted with
a screened Coulomb interaction "coul/shield"_pair_coul_shield.html. Therefore,
to simulated the properties of h-BN correctly, this potential must be used in
combination with the pair style "coul/shield"_pair_coul_shield.html.
NOTE: Two new sets of parameters of ILP for two-dimensional hexagonal
Materials are presented in "(Ouyang)"_#Ouyang. These parameters provide

View File

@ -31,14 +31,10 @@ element or alloy and set of parameters, e.g. EAM for Cu with a
specific EAM potential file.
See the current list of "KIM model
drivers"_https://openkim.org/kim-items/model-drivers/alphabetical.
drivers"_https://openkim.org/browse/model-drivers/alphabetical.
See the current list of all "KIM
models"_https://openkim.org/kim-items/models/by-model-drivers
See the list of "example KIM models"_https://openkim.org/kim-api which
are included in the KIM library by default, in the "What is in the KIM
API source package?" section.
models"_https://openkim.org/browse/models/by-model-drivers
To use this pair style, you must first download and install the KIM
API library from the "OpenKIM website"_https://openkim.org. The KIM
@ -46,12 +42,9 @@ section of the "Packages details"_Packages_details.html doc page has
instructions on how to do this with a simple make command, when
building LAMMPS.
See the examples/kim dir for an input script that uses a KIM model (potential)
for Lennard-Jones. Note, for this example input script, the example models
shipped with with kim-api package must be installed. See the "Build
package"_Build_package.html section and the ./lib/kim/README for details
on how to build LAMMSPS with the kim-api and how to install the example models.
See the examples/kim dir for an input script that uses a KIM model
(potential) for Lennard-Jones.
:line
The argument {model} is the name of the KIM model for a specific

View File

@ -42,10 +42,16 @@ the last term in the equation for {Vij} above. This is essential only
when the tapper function is turned off. The formula of taper function
can be found in pair style "ilp/graphene/hbn"_pair_ilp_graphene_hbn.html.
NOTE: This potential is intended for interactions between two different
graphene layers. Therefore, to avoid interaction within the same layers,
each layer should have a separate molecule id and is recommended to use
"full" atom style in the data file.
NOTE: This potential (ILP) is intended for interlayer interactions between two
different layers of graphene. To perform a realistic simulation, this potential
must be used in combination with intra-layer potential, such as
"AIREBO"_pair_airebo.html or "Tersoff"_pair_tersoff.html potential.
To keep the intra-layer properties unaffected, the interlayer interaction
within the same layers should be avoided. Hence, each atom has to have a layer
identifier such that atoms residing on the same layer interact via the
appropriate intra-layer potential and atoms residing on different layers
interact via the ILP. Here, the molecule id is chosen as the layer identifier,
thus a data file with the "full" atom style is required to use this potential.
The parameter file (e.g. CH.KC), is intended for use with {metal}
"units"_units.html, with energies in meV. Two additional parameters, {S},

View File

@ -357,6 +357,13 @@ The {meam/c} style is provided in the USER-MEAMC package. It is
only enabled if LAMMPS was built with that package.
See the "Build package"_Build_package.html doc page for more info.
The maximum number of elements, that can be read from the MEAM
library file, is determined at compile time. The default is 5.
If you need support for more elements, you have to change the
define for the constant 'maxelt' at the beginning of the file
src/USER-MEAMC/meam.h and update/recompile LAMMPS. There is no
limit on the number of atoms types.
[Related commands:]
"pair_coeff"_pair_coeff.html, "pair_style eam"_pair_eam.html,

View File

@ -88,4 +88,4 @@ package"_Build_package.html doc page for more info.
Physical Review B, 88(18), 184422. (2013).
:link(Tranchida5)
[(Tranchida)] Tranchida, Plimpton, Thibaudeau and Thompson,
Journal of Computational Physics, (2018).
Journal of Computational Physics, 372, 406-425, (2018).

View File

@ -95,4 +95,4 @@ package"_Build_package.html doc page for more info.
:link(Tranchida3)
[(Tranchida)] Tranchida, Plimpton, Thibaudeau and Thompson,
Journal of Computational Physics, (2018).
Journal of Computational Physics, 372, 406-425, (2018).

View File

@ -70,4 +70,4 @@ package"_Build_package.html doc page for more info.
:link(Tranchida4)
[(Tranchida)] Tranchida, Plimpton, Thibaudeau, and Thompson,
Journal of Computational Physics, (2018).
Journal of Computational Physics, 372, 406-425, (2018).

View File

@ -80,4 +80,4 @@ package"_Build_package.html doc page for more info.
:link(Tranchida6)
[(Tranchida)] Tranchida, Plimpton, Thibaudeau and Thompson,
Journal of Computational Physics, (2018).
Journal of Computational Physics, 372, 406-425, (2018).

View File

@ -42,6 +42,7 @@ Pair Styles :h1
pair_gauss
pair_gayberne
pair_gran
pair_granular
pair_gromacs
pair_gw
pair_hbond_dreiding

View File

@ -134,7 +134,7 @@ The {mom} and {rot} keywords are used by {create}. If mom = yes, the
linear momentum of the newly created ensemble of velocities is zeroed;
if rot = yes, the angular momentum is zeroed.
*line
:line
If specified, the {temp} keyword is used by {create} and {scale} to
specify a "compute"_compute.html that calculates temperature in a

View File

@ -156,6 +156,8 @@ ba
Babadi
backcolor
Baczewski
Bagi
Bagnold
Bal
balancer
Balankura
@ -198,6 +200,7 @@ Berkowitz
berlin
Berne
Bertotti
Bessarab
Beutler
bgq
Bh
@ -250,6 +253,7 @@ Boresch
Botero
Botu
Bouguet
Bourne
boxcolor
bp
bpls
@ -286,6 +290,7 @@ Cao
Capolungo
Caro
cartesian
CasP
Caswell
Cates
Cavium
@ -345,7 +350,9 @@ Cii
Cij
cis
civ
Clang
clearstore
Cleary
Clebsch
clemson
Clermont
@ -372,6 +379,7 @@ Coeff
CoefficientN
coeffs
Coeffs
cohesionless
Coker
Colberg
coleman
@ -449,6 +457,7 @@ cuda
Cuda
CUDA
CuH
Cummins
Curk
customIDs
cutbond
@ -492,6 +501,7 @@ darkturquoise
darkviolet
Das
Dasgupta
dashpot
dat
datafile
datums
@ -529,6 +539,7 @@ Dequidt
der
derekt
Derjagin
Derjaguin
Derlet
Deserno
Destree
@ -582,6 +593,7 @@ Dmax
dmg
dmi
dnf
DNi
Dobson
Dodds
dodgerblue
@ -627,6 +639,7 @@ dVx
dW
dx
dy
dylib
dyn
dyne
dynes
@ -647,6 +660,7 @@ ec
Ec
ecoul
ecp
Ecut
edgeIDs
edihed
edim
@ -951,6 +965,8 @@ gmail
gmake
gmask
Gmask
gneb
GNEB
googlemail
Gordan
GPa
@ -1079,6 +1095,7 @@ Hyoungki
hyperdynamics
hyperradius
hyperspherical
hysteretic
Ibanez
ibar
ibm
@ -1124,6 +1141,7 @@ infty
inhomogeneities
inhomogeneous
init
initio
initializations
InP
inregion
@ -1138,6 +1156,7 @@ interconvert
interial
interlayer
intermolecular
Interparticle
interstitials
Intr
intra
@ -1156,6 +1175,7 @@ IPython
Isele
isenthalpic
ish
Ishida
iso
isodemic
isoenergetic
@ -1243,6 +1263,7 @@ Jy
Jz
jzimmer
Kadiri
Kai
Kalia
Kamberaj
Kapfer
@ -1265,6 +1286,7 @@ kcl
Kd
KDevelop
ke
kepler
KE
Keblinski
keflag
@ -1272,6 +1294,7 @@ Keir
Kelchner
Kelkar
Kemper
keV
Keyes
Khersonskii
Khrapak
@ -1298,6 +1321,7 @@ Kondor
konglt
Koning
Kooser
Korn
Koskinen
Koster
Kosztin
@ -1382,6 +1406,7 @@ libAtoms
libawpmd
libch
libcolvars
libcurl
libdir
libdl
libfftw
@ -1449,6 +1474,7 @@ logfile
logfreq
logicals
Lomdahl
Lond
lookups
Lookups
LoopVar
@ -1464,6 +1490,7 @@ lsfftw
ltbbmalloc
lubricateU
lucy
Luding
Lussetti
Lustig
lwsock
@ -1502,6 +1529,7 @@ manybody
MANYBODY
Maras
Marrink
Marroquin
Marsaglia
Marseille
Martyna
@ -1513,12 +1541,14 @@ masstotal
Masuhiro
Matchett
Materias
mathbf
matlab
matplotlib
Mattox
Mattson
maxangle
maxbond
maxelt
maxeval
maxfiles
Maxfoo
@ -1601,12 +1631,14 @@ Mie
Mikami
Militzer
Minary
Mindlin
mincap
mingw
minima
minimizations
minimizer
minimizers
minneigh
minorder
minSteps
mintcream
@ -1671,6 +1703,7 @@ mpiexec
mpiio
mpirun
mplayer
mps
Mryglod
mscg
MSCG
@ -1954,6 +1987,7 @@ oneway
onn
ons
OO
opencl
openKIM
OpenMP
openmp
@ -2286,6 +2320,7 @@ rg
Rg
Rhaphson
rheological
rheology
rhodo
Rhodo
rhodopsin
@ -2337,6 +2372,7 @@ rNEMD
ro
Rochus
Rockett
Rodrigues
Rohart
Ronchetti
Rosati
@ -2602,6 +2638,7 @@ Tait
taitwater
Tajkhorshid
Tamaskovics
Tanaka
tanh
Tartakovsky
taskset
@ -2689,6 +2726,7 @@ tokyo
tol
toolchain
topologies
Toporov
Torder
torsions
Tosi
@ -2733,11 +2771,13 @@ Tsrd
Tstart
tstat
Tstop
Tsuji
Tsuzuki
tt
Tt
TThis
ttm
ttol
tu
Tuckerman
tue
@ -2783,6 +2823,7 @@ unimodal
unitless
Universite
unix
unmaintained
unoptimized
unpadded
unphysical
@ -2809,6 +2850,7 @@ utsa
Uttormark
uvm
uwo
Uzdin
vacf
valent
Valeriu
@ -2908,7 +2950,7 @@ wB
Wbody
webpage
Weckner
WeinenE
WeinanE
Wennberg
Westview
wget
@ -2918,6 +2960,7 @@ Wi
Wicaksono
wih
Wijk
Wikipedia
wildcard
Wildcard
Wirnsberger

13
examples/SPIN/gneb/README Normal file
View File

@ -0,0 +1,13 @@
Perform geodesic NEB calculations for spin configurations.
The two examples are:
- the magnetic switching of an iron nanoisland
- the collapse of a magnetic skyrmion
Run those examples as:
mpirun -np 3 lmp_mpi -in in.gneb.iron -partition 3x1
You should be able to use any number of replicas >= 3.
In the interpolate/ directory, a c routine is provided to
interpolate the MEP.

View File

@ -0,0 +1,68 @@
32
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@ -0,0 +1,50 @@
units metal
dimension 3
boundary p p f
atom_style spin
# necessary for the serial algorithm (sametag)
atom_modify map array
# setting mass, mag. moments, and interactions for bcc iron
# (mass not necessary for fixed lattice calculation)
read_data initial.iron_spin
mass 1 55.845
pair_style spin/exchange 3.5
pair_coeff * * exchange 3.4 0.02726 0.2171 1.841
neighbor 0.1 bin
neigh_modify every 10 check yes delay 20
fix 1 all precession/spin zeeman 0.1 0.0 0.0 1.0 anisotropy 0.0001 1.0 0.0 0.0
fix_modify 1 energy yes
fix 3 all neb/spin 1.0
timestep 0.0001
thermo 100
compute out_mag all spin
compute out_pe all pe
compute out_ke all ke
compute out_temp all temp
variable magx equal c_out_mag[1]
variable magy equal c_out_mag[2]
variable magz equal c_out_mag[3]
variable magnorm equal c_out_mag[4]
variable emag equal c_out_mag[5]
thermo 100
thermo_style custom step time v_magx v_magz v_magnorm etotal
thermo_modify format float %20.15g
compute outsp all property/atom spx spy spz sp fmx fmy fmz
variable u universe 1 2 3 4
dump 1 all custom 200 dump.$u type x y z c_outsp[1] c_outsp[2] c_outsp[3]
min_style spin
min_modify alpha_damp 1.0 discrete_factor 10.0
neb/spin 1.0e-12 1.0e-12 200000 100000 1000 final final.iron_spin verbose

View File

@ -0,0 +1,82 @@
LAMMPS data file via write_data, version 4 Jan 2019, timestep = 0
32 atoms
1 atom types
0.0000000000000000e+00 1.1465999999999999e+01 xlo xhi
0.0000000000000000e+00 1.1465999999999999e+01 ylo yhi
0.0000000000000000e+00 2.8664999999999998e+00 zlo zhi
Masses
1 55.845
Atoms # spin
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View File

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400
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132 2.5 18.0 33.0 0.0 0.0 0.0 1.0
133 2.5 18.0 36.0 0.0 0.0 0.0 1.0
134 2.5 18.0 39.0 0.0 0.0 0.0 1.0
135 2.5 18.0 42.0 0.0 0.0 0.0 1.0
136 2.5 18.0 45.0 0.0 0.0 0.0 1.0
137 2.5 18.0 48.0 0.0 0.0 0.0 1.0
138 2.5 18.0 51.0 0.0 0.0 0.0 1.0
139 2.5 18.0 54.0 0.0 0.0 0.0 1.0
140 2.5 18.0 57.0 0.0 0.0 0.0 1.0
141 2.5 21.0 0.0 0.0 0.0 0.0 1.0
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146 2.5 21.0 15.0 0.0 0.0 0.0 1.0
147 2.5 21.0 18.0 0.0 0.0 0.0 1.0
148 2.5 21.0 21.0 0.0 0.0 0.0 1.0
149 2.5 21.0 24.0 0.0 0.0 0.0 1.0
150 2.5 21.0 27.0 0.0 0.0 0.0 1.0
151 2.5 21.0 30.0 0.0 0.0 0.0 1.0
152 2.5 21.0 33.0 0.0 0.0 0.0 1.0
153 2.5 21.0 36.0 0.0 0.0 0.0 1.0
154 2.5 21.0 39.0 0.0 0.0 0.0 1.0
155 2.5 21.0 42.0 0.0 0.0 0.0 1.0
156 2.5 21.0 45.0 0.0 0.0 0.0 1.0
157 2.5 21.0 48.0 0.0 0.0 0.0 1.0
158 2.5 21.0 51.0 0.0 0.0 0.0 1.0
159 2.5 21.0 54.0 0.0 0.0 0.0 1.0
160 2.5 21.0 57.0 0.0 0.0 0.0 1.0
161 2.5 24.0 0.0 0.0 0.0 0.0 1.0
162 2.5 24.0 3.0 0.0 0.0 0.0 1.0
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165 2.5 24.0 12.0 0.0 0.0 0.0 1.0
166 2.5 24.0 15.0 0.0 0.0 0.0 1.0
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170 2.5 24.0 27.0 0.0 0.0 0.0 1.0
171 2.5 24.0 30.0 0.0 0.0 0.0 1.0
172 2.5 24.0 33.0 0.0 0.0 0.0 1.0
173 2.5 24.0 36.0 0.0 0.0 0.0 1.0
174 2.5 24.0 39.0 0.0 0.0 0.0 1.0
175 2.5 24.0 42.0 0.0 0.0 0.0 1.0
176 2.5 24.0 45.0 0.0 0.0 0.0 1.0
177 2.5 24.0 48.0 0.0 0.0 0.0 1.0
178 2.5 24.0 51.0 0.0 0.0 0.0 1.0
179 2.5 24.0 54.0 0.0 0.0 0.0 1.0
180 2.5 24.0 57.0 0.0 0.0 0.0 1.0
181 2.5 27.0 0.0 0.0 0.0 0.0 1.0
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183 2.5 27.0 6.0 0.0 0.0 0.0 1.0
184 2.5 27.0 9.0 0.0 0.0 0.0 1.0
185 2.5 27.0 12.0 0.0 0.0 0.0 1.0
186 2.5 27.0 15.0 0.0 0.0 0.0 1.0
187 2.5 27.0 18.0 0.0 0.0 0.0 1.0
188 2.5 27.0 21.0 0.0 0.0 0.0 1.0
189 2.5 27.0 24.0 0.0 0.0 0.0 1.0
190 2.5 27.0 27.0 0.0 0.0 0.0 1.0
191 2.5 27.0 30.0 0.0 0.0 0.0 1.0
192 2.5 27.0 33.0 0.0 0.0 0.0 1.0
193 2.5 27.0 36.0 0.0 0.0 0.0 1.0
194 2.5 27.0 39.0 0.0 0.0 0.0 1.0
195 2.5 27.0 42.0 0.0 0.0 0.0 1.0
196 2.5 27.0 45.0 0.0 0.0 0.0 1.0
197 2.5 27.0 48.0 0.0 0.0 0.0 1.0
198 2.5 27.0 51.0 0.0 0.0 0.0 1.0
199 2.5 27.0 54.0 0.0 0.0 0.0 1.0
200 2.5 27.0 57.0 0.0 0.0 0.0 1.0
201 2.5 30.0 0.0 0.0 0.0 0.0 1.0
202 2.5 30.0 3.0 0.0 0.0 0.0 1.0
203 2.5 30.0 6.0 0.0 0.0 0.0 1.0
204 2.5 30.0 9.0 0.0 0.0 0.0 1.0
205 2.5 30.0 12.0 0.0 0.0 0.0 1.0
206 2.5 30.0 15.0 0.0 0.0 0.0 1.0
207 2.5 30.0 18.0 0.0 0.0 0.0 1.0
208 2.5 30.0 21.0 0.0 0.0 0.0 1.0
209 2.5 30.0 24.0 0.0 0.0 0.0 1.0
210 2.5 30.0 27.0 0.0 0.0 0.0 1.0
211 2.5 30.0 30.0 0.0 0.0 0.0 1.0
212 2.5 30.0 33.0 0.0 0.0 0.0 1.0
213 2.5 30.0 36.0 0.0 0.0 0.0 1.0
214 2.5 30.0 39.0 0.0 0.0 0.0 1.0
215 2.5 30.0 42.0 0.0 0.0 0.0 1.0
216 2.5 30.0 45.0 0.0 0.0 0.0 1.0
217 2.5 30.0 48.0 0.0 0.0 0.0 1.0
218 2.5 30.0 51.0 0.0 0.0 0.0 1.0
219 2.5 30.0 54.0 0.0 0.0 0.0 1.0
220 2.5 30.0 57.0 0.0 0.0 0.0 1.0
221 2.5 33.0 0.0 0.0 0.0 0.0 1.0
222 2.5 33.0 3.0 0.0 0.0 0.0 1.0
223 2.5 33.0 6.0 0.0 0.0 0.0 1.0
224 2.5 33.0 9.0 0.0 0.0 0.0 1.0
225 2.5 33.0 12.0 0.0 0.0 0.0 1.0
226 2.5 33.0 15.0 0.0 0.0 0.0 1.0
227 2.5 33.0 18.0 0.0 0.0 0.0 1.0
228 2.5 33.0 21.0 0.0 0.0 0.0 1.0
229 2.5 33.0 24.0 0.0 0.0 0.0 1.0
230 2.5 33.0 27.0 0.0 0.0 0.0 1.0
231 2.5 33.0 30.0 0.0 0.0 0.0 1.0
232 2.5 33.0 33.0 0.0 0.0 0.0 1.0
233 2.5 33.0 36.0 0.0 0.0 0.0 1.0
234 2.5 33.0 39.0 0.0 0.0 0.0 1.0
235 2.5 33.0 42.0 0.0 0.0 0.0 1.0
236 2.5 33.0 45.0 0.0 0.0 0.0 1.0
237 2.5 33.0 48.0 0.0 0.0 0.0 1.0
238 2.5 33.0 51.0 0.0 0.0 0.0 1.0
239 2.5 33.0 54.0 0.0 0.0 0.0 1.0
240 2.5 33.0 57.0 0.0 0.0 0.0 1.0
241 2.5 36.0 0.0 0.0 0.0 0.0 1.0
242 2.5 36.0 3.0 0.0 0.0 0.0 1.0
243 2.5 36.0 6.0 0.0 0.0 0.0 1.0
244 2.5 36.0 9.0 0.0 0.0 0.0 1.0
245 2.5 36.0 12.0 0.0 0.0 0.0 1.0
246 2.5 36.0 15.0 0.0 0.0 0.0 1.0
247 2.5 36.0 18.0 0.0 0.0 0.0 1.0
248 2.5 36.0 21.0 0.0 0.0 0.0 1.0
249 2.5 36.0 24.0 0.0 0.0 0.0 1.0
250 2.5 36.0 27.0 0.0 0.0 0.0 1.0
251 2.5 36.0 30.0 0.0 0.0 0.0 1.0
252 2.5 36.0 33.0 0.0 0.0 0.0 1.0
253 2.5 36.0 36.0 0.0 0.0 0.0 1.0
254 2.5 36.0 39.0 0.0 0.0 0.0 1.0
255 2.5 36.0 42.0 0.0 0.0 0.0 1.0
256 2.5 36.0 45.0 0.0 0.0 0.0 1.0
257 2.5 36.0 48.0 0.0 0.0 0.0 1.0
258 2.5 36.0 51.0 0.0 0.0 0.0 1.0
259 2.5 36.0 54.0 0.0 0.0 0.0 1.0
260 2.5 36.0 57.0 0.0 0.0 0.0 1.0
261 2.5 39.0 0.0 0.0 0.0 0.0 1.0
262 2.5 39.0 3.0 0.0 0.0 0.0 1.0
263 2.5 39.0 6.0 0.0 0.0 0.0 1.0
264 2.5 39.0 9.0 0.0 0.0 0.0 1.0
265 2.5 39.0 12.0 0.0 0.0 0.0 1.0
266 2.5 39.0 15.0 0.0 0.0 0.0 1.0
267 2.5 39.0 18.0 0.0 0.0 0.0 1.0
268 2.5 39.0 21.0 0.0 0.0 0.0 1.0
269 2.5 39.0 24.0 0.0 0.0 0.0 1.0
270 2.5 39.0 27.0 0.0 0.0 0.0 1.0
271 2.5 39.0 30.0 0.0 0.0 0.0 1.0
272 2.5 39.0 33.0 0.0 0.0 0.0 1.0
273 2.5 39.0 36.0 0.0 0.0 0.0 1.0
274 2.5 39.0 39.0 0.0 0.0 0.0 1.0
275 2.5 39.0 42.0 0.0 0.0 0.0 1.0
276 2.5 39.0 45.0 0.0 0.0 0.0 1.0
277 2.5 39.0 48.0 0.0 0.0 0.0 1.0
278 2.5 39.0 51.0 0.0 0.0 0.0 1.0
279 2.5 39.0 54.0 0.0 0.0 0.0 1.0
280 2.5 39.0 57.0 0.0 0.0 0.0 1.0
281 2.5 42.0 0.0 0.0 0.0 0.0 1.0
282 2.5 42.0 3.0 0.0 0.0 0.0 1.0
283 2.5 42.0 6.0 0.0 0.0 0.0 1.0
284 2.5 42.0 9.0 0.0 0.0 0.0 1.0
285 2.5 42.0 12.0 0.0 0.0 0.0 1.0
286 2.5 42.0 15.0 0.0 0.0 0.0 1.0
287 2.5 42.0 18.0 0.0 0.0 0.0 1.0
288 2.5 42.0 21.0 0.0 0.0 0.0 1.0
289 2.5 42.0 24.0 0.0 0.0 0.0 1.0
290 2.5 42.0 27.0 0.0 0.0 0.0 1.0
291 2.5 42.0 30.0 0.0 0.0 0.0 1.0
292 2.5 42.0 33.0 0.0 0.0 0.0 1.0
293 2.5 42.0 36.0 0.0 0.0 0.0 1.0
294 2.5 42.0 39.0 0.0 0.0 0.0 1.0
295 2.5 42.0 42.0 0.0 0.0 0.0 1.0
296 2.5 42.0 45.0 0.0 0.0 0.0 1.0
297 2.5 42.0 48.0 0.0 0.0 0.0 1.0
298 2.5 42.0 51.0 0.0 0.0 0.0 1.0
299 2.5 42.0 54.0 0.0 0.0 0.0 1.0
300 2.5 42.0 57.0 0.0 0.0 0.0 1.0
301 2.5 45.0 0.0 0.0 0.0 0.0 1.0
302 2.5 45.0 3.0 0.0 0.0 0.0 1.0
303 2.5 45.0 6.0 0.0 0.0 0.0 1.0
304 2.5 45.0 9.0 0.0 0.0 0.0 1.0
305 2.5 45.0 12.0 0.0 0.0 0.0 1.0
306 2.5 45.0 15.0 0.0 0.0 0.0 1.0
307 2.5 45.0 18.0 0.0 0.0 0.0 1.0
308 2.5 45.0 21.0 0.0 0.0 0.0 1.0
309 2.5 45.0 24.0 0.0 0.0 0.0 1.0
310 2.5 45.0 27.0 0.0 0.0 0.0 1.0
311 2.5 45.0 30.0 0.0 0.0 0.0 1.0
312 2.5 45.0 33.0 0.0 0.0 0.0 1.0
313 2.5 45.0 36.0 0.0 0.0 0.0 1.0
314 2.5 45.0 39.0 0.0 0.0 0.0 1.0
315 2.5 45.0 42.0 0.0 0.0 0.0 1.0
316 2.5 45.0 45.0 0.0 0.0 0.0 1.0
317 2.5 45.0 48.0 0.0 0.0 0.0 1.0
318 2.5 45.0 51.0 0.0 0.0 0.0 1.0
319 2.5 45.0 54.0 0.0 0.0 0.0 1.0
320 2.5 45.0 57.0 0.0 0.0 0.0 1.0
321 2.5 48.0 0.0 0.0 0.0 0.0 1.0
322 2.5 48.0 3.0 0.0 0.0 0.0 1.0
323 2.5 48.0 6.0 0.0 0.0 0.0 1.0
324 2.5 48.0 9.0 0.0 0.0 0.0 1.0
325 2.5 48.0 12.0 0.0 0.0 0.0 1.0
326 2.5 48.0 15.0 0.0 0.0 0.0 1.0
327 2.5 48.0 18.0 0.0 0.0 0.0 1.0
328 2.5 48.0 21.0 0.0 0.0 0.0 1.0
329 2.5 48.0 24.0 0.0 0.0 0.0 1.0
330 2.5 48.0 27.0 0.0 0.0 0.0 1.0
331 2.5 48.0 30.0 0.0 0.0 0.0 1.0
332 2.5 48.0 33.0 0.0 0.0 0.0 1.0
333 2.5 48.0 36.0 0.0 0.0 0.0 1.0
334 2.5 48.0 39.0 0.0 0.0 0.0 1.0
335 2.5 48.0 42.0 0.0 0.0 0.0 1.0
336 2.5 48.0 45.0 0.0 0.0 0.0 1.0
337 2.5 48.0 48.0 0.0 0.0 0.0 1.0
338 2.5 48.0 51.0 0.0 0.0 0.0 1.0
339 2.5 48.0 54.0 0.0 0.0 0.0 1.0
340 2.5 48.0 57.0 0.0 0.0 0.0 1.0
341 2.5 51.0 0.0 0.0 0.0 0.0 1.0
342 2.5 51.0 3.0 0.0 0.0 0.0 1.0
343 2.5 51.0 6.0 0.0 0.0 0.0 1.0
344 2.5 51.0 9.0 0.0 0.0 0.0 1.0
345 2.5 51.0 12.0 0.0 0.0 0.0 1.0
346 2.5 51.0 15.0 0.0 0.0 0.0 1.0
347 2.5 51.0 18.0 0.0 0.0 0.0 1.0
348 2.5 51.0 21.0 0.0 0.0 0.0 1.0
349 2.5 51.0 24.0 0.0 0.0 0.0 1.0
350 2.5 51.0 27.0 0.0 0.0 0.0 1.0
351 2.5 51.0 30.0 0.0 0.0 0.0 1.0
352 2.5 51.0 33.0 0.0 0.0 0.0 1.0
353 2.5 51.0 36.0 0.0 0.0 0.0 1.0
354 2.5 51.0 39.0 0.0 0.0 0.0 1.0
355 2.5 51.0 42.0 0.0 0.0 0.0 1.0
356 2.5 51.0 45.0 0.0 0.0 0.0 1.0
357 2.5 51.0 48.0 0.0 0.0 0.0 1.0
358 2.5 51.0 51.0 0.0 0.0 0.0 1.0
359 2.5 51.0 54.0 0.0 0.0 0.0 1.0
360 2.5 51.0 57.0 0.0 0.0 0.0 1.0
361 2.5 54.0 0.0 0.0 0.0 0.0 1.0
362 2.5 54.0 3.0 0.0 0.0 0.0 1.0
363 2.5 54.0 6.0 0.0 0.0 0.0 1.0
364 2.5 54.0 9.0 0.0 0.0 0.0 1.0
365 2.5 54.0 12.0 0.0 0.0 0.0 1.0
366 2.5 54.0 15.0 0.0 0.0 0.0 1.0
367 2.5 54.0 18.0 0.0 0.0 0.0 1.0
368 2.5 54.0 21.0 0.0 0.0 0.0 1.0
369 2.5 54.0 24.0 0.0 0.0 0.0 1.0
370 2.5 54.0 27.0 0.0 0.0 0.0 1.0
371 2.5 54.0 30.0 0.0 0.0 0.0 1.0
372 2.5 54.0 33.0 0.0 0.0 0.0 1.0
373 2.5 54.0 36.0 0.0 0.0 0.0 1.0
374 2.5 54.0 39.0 0.0 0.0 0.0 1.0
375 2.5 54.0 42.0 0.0 0.0 0.0 1.0
376 2.5 54.0 45.0 0.0 0.0 0.0 1.0
377 2.5 54.0 48.0 0.0 0.0 0.0 1.0
378 2.5 54.0 51.0 0.0 0.0 0.0 1.0
379 2.5 54.0 54.0 0.0 0.0 0.0 1.0
380 2.5 54.0 57.0 0.0 0.0 0.0 1.0
381 2.5 57.0 0.0 0.0 0.0 0.0 1.0
382 2.5 57.0 3.0 0.0 0.0 0.0 1.0
383 2.5 57.0 6.0 0.0 0.0 0.0 1.0
384 2.5 57.0 9.0 0.0 0.0 0.0 1.0
385 2.5 57.0 12.0 0.0 0.0 0.0 1.0
386 2.5 57.0 15.0 0.0 0.0 0.0 1.0
387 2.5 57.0 18.0 0.0 0.0 0.0 1.0
388 2.5 57.0 21.0 0.0 0.0 0.0 1.0
389 2.5 57.0 24.0 0.0 0.0 0.0 1.0
390 2.5 57.0 27.0 0.0 0.0 0.0 1.0
391 2.5 57.0 30.0 0.0 0.0 0.0 1.0
392 2.5 57.0 33.0 0.0 0.0 0.0 1.0
393 2.5 57.0 36.0 0.0 0.0 0.0 1.0
394 2.5 57.0 39.0 0.0 0.0 0.0 1.0
395 2.5 57.0 42.0 0.0 0.0 0.0 1.0
396 2.5 57.0 45.0 0.0 0.0 0.0 1.0
397 2.5 57.0 48.0 0.0 0.0 0.0 1.0
398 2.5 57.0 51.0 0.0 0.0 0.0 1.0
399 2.5 57.0 54.0 0.0 0.0 0.0 1.0
400 2.5 57.0 57.0 0.0 0.0 0.0 1.0

View File

@ -0,0 +1,47 @@
units metal
dimension 3
boundary p p f
atom_style spin
# necessary for the serial algorithm (sametag)
atom_modify map array
# setting mass, mag. moments, and interactions for bcc iron
# (mass not necessary for fixed lattice calculation)
read_data initial.skyrmion
mass 1 55.845
pair_style hybrid/overlay spin/exchange 3.1 spin/dmi 3.1
pair_coeff * * spin/exchange exchange 3.1 0.01593 0.06626915552 1.211
pair_coeff * * spin/dmi dmi 3.1 0.12e-03 0.0 0.0 1.0
neighbor 0.1 bin
neigh_modify every 10 check yes delay 20
fix 1 all precession/spin zeeman 0.0 0.0 0.0 1.0 anisotropy 5e-05 0.0 0.0 1.0
fix_modify 1 energy yes
fix 2 all langevin/spin 0.0 0.0 21
fix 3 all neb/spin 1.0
timestep 0.0001
compute out_mag all spin
variable magx equal c_out_mag[1]
variable magy equal c_out_mag[2]
variable magz equal c_out_mag[3]
variable magnorm equal c_out_mag[4]
variable emag equal c_out_mag[5]
thermo 100
thermo_style custom step time v_magx v_magz v_magnorm etotal
thermo_modify format float %20.15g
compute outsp all property/atom spx spy spz sp fmx fmy fmz
variable u universe 1 2 3 4
dump 1 all custom 1 dump.$u type x y z c_outsp[1] c_outsp[2] c_outsp[3]
min_style spin
min_modify alpha_damp 1.0 discrete_factor 10.0
neb/spin 1.0e-9 1.0e-9 10000 10000 10 final final.skyrmion

View File

@ -0,0 +1,818 @@
LAMMPS data file via write_data, version 28 Feb 2019, timestep = 6
400 atoms
1 atom types
0.0000000000000000e+00 6.0000000000000000e+01 xlo xhi
0.0000000000000000e+00 6.0000000000000000e+01 ylo yhi
0.0000000000000000e+00 3.0000000000000000e+00 zlo zhi
Masses
1 55.845
Atoms # spin
1 1 2.5000000000000000e+00 0.0000000000000000e+00 0.0000000000000000e+00 0.0000000000000000e+00 -3.9693242391277868e-03 -3.9693242391277929e-03 9.9998424434096433e-01 0 0 0
21 1 2.5000000000000000e+00 3.0000000000000000e+00 0.0000000000000000e+00 0.0000000000000000e+00 -1.1868011343002482e-02 -4.8145058779812530e-03 9.9991798205648519e-01 0 0 0
41 1 2.5000000000000000e+00 6.0000000000000000e+00 0.0000000000000000e+00 0.0000000000000000e+00 -1.9561861499557517e-02 -6.5828744882500201e-03 9.9978697697966845e-01 0 0 0
61 1 2.5000000000000000e+00 9.0000000000000000e+00 0.0000000000000000e+00 0.0000000000000000e+00 -2.6644762521588476e-02 -9.3989438861432541e-03 9.9960077855311480e-01 0 0 0
81 1 2.5000000000000000e+00 1.2000000000000000e+01 0.0000000000000000e+00 0.0000000000000000e+00 -3.2364838887478299e-02 -1.3362272507461704e-02 9.9938679542868891e-01 0 0 0
101 1 2.5000000000000000e+00 1.5000000000000000e+01 0.0000000000000000e+00 0.0000000000000000e+00 -3.5634992015801843e-02 -1.8429703183501425e-02 9.9919492261750509e-01 0 0 0
121 1 2.5000000000000000e+00 1.8000000000000000e+01 0.0000000000000000e+00 0.0000000000000000e+00 -3.5235119566844247e-02 -2.4270277420221115e-02 9.9908430073895971e-01 0 0 0
141 1 2.5000000000000000e+00 2.1000000000000000e+01 0.0000000000000000e+00 0.0000000000000000e+00 -3.0237916900163156e-02 -3.0163850736159143e-02 9.9908748890690546e-01 0 0 0
161 1 2.5000000000000000e+00 2.4000000000000000e+01 0.0000000000000000e+00 0.0000000000000000e+00 -2.0551704657275890e-02 -3.5058787503171429e-02 9.9917391321755789e-01 0 0 0
181 1 2.5000000000000000e+00 2.7000000000000000e+01 0.0000000000000000e+00 0.0000000000000000e+00 -7.2971667669136115e-03 -3.7860607272964066e-02 9.9925638640646097e-01 0 0 0
201 1 2.5000000000000000e+00 3.0000000000000000e+01 0.0000000000000000e+00 0.0000000000000000e+00 7.2971667669136028e-03 -3.7860607272964066e-02 9.9925638640646086e-01 0 0 0
221 1 2.5000000000000000e+00 3.3000000000000000e+01 0.0000000000000000e+00 0.0000000000000000e+00 2.0551704657275901e-02 -3.5058787503171443e-02 9.9917391321755789e-01 0 0 0
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View File

@ -40,6 +40,6 @@ thermo_style custom step time v_magnorm v_emag v_tmag temp etotal
thermo_modify format float %20.15g
compute outsp all property/atom spx spy spz sp fmx fmy fmz
dump 10 all custom 1 dump.lammpstrj type x y z c_outsp[1] c_outsp[2] c_outsp[3] c_outsp[4] c_outsp[5] c_outsp[6] c_outsp[7]
dump 1 all custom 1 dump.lammpstrj type x y z c_outsp[1] c_outsp[2] c_outsp[3] c_outsp[4] c_outsp[5] c_outsp[6] c_outsp[7]
run 100

View File

@ -0,0 +1,59 @@
units metal
dimension 3
boundary f f f
atom_style spin
# necessary for the serial algorithm (sametag)
atom_modify map array
lattice sc 3.0
region box block 0.0 10.0 0.0 10.0 0.0 1.0
create_box 2 box
region reg1 block 0.0 10.0 0.0 5.0 0.0 1.0
region reg2 block 0.0 10.0 6.0 10.0 0.0 1.0
create_atoms 1 region reg1
create_atoms 2 region reg2
# setting mass, mag. moments, and interactions for bcc iron
mass 1 55.845
mass 2 55.845
set region reg1 spin 2.2 0.0 0.0 1.0
set region reg2 spin/random 31 2.2
group fixed_spin region reg1
pair_style hybrid/overlay spin/exchange 3.1 spin/dmi 3.1
pair_coeff * * spin/exchange exchange 3.1 -0.01593 0.06626915552 1.211
pair_coeff * * spin/dmi dmi 3.1 0.12e-03 0.0 0.0 1.0
neighbor 0.1 bin
neigh_modify every 10 check yes delay 20
fix 1 all precession/spin zeeman 0.0 0.0 0.0 1.0 anisotropy 5e-05 0.0 0.0 1.0
fix_modify 1 energy yes
fix 2 fixed_spin setforce/spin 0.0 0.0 0.0
fix 3 all langevin/spin 0.0 0.1 21
fix 4 all nve/spin lattice no
timestep 0.0001
compute out_mag all spin
variable magx equal c_out_mag[1]
variable magy equal c_out_mag[2]
variable magz equal c_out_mag[3]
variable magnorm equal c_out_mag[4]
variable emag equal c_out_mag[5]
variable tmag equal c_out_mag[6]
thermo 1000
thermo_style custom step time v_magx v_magz v_magnorm v_tmag etotal
thermo_modify format float %20.15g
compute outsp all property/atom spx spy spz sp fmx fmy fmz
dump 1 all custom 1000 dump.lammpstrj type x y z c_outsp[1] c_outsp[2] c_outsp[3] c_outsp[5] c_outsp[6] c_outsp[7]
min_style spin
min_modify alpha_damp 1.0 discrete_factor 20.0
minimize 1.0e-16 1.0e-16 50000 1000

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