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343 Commits

Author SHA1 Message Date
bfdf464ee3 patch 22Feb18 2018-02-22 08:46:03 -07:00
e1d1c87656 Merge pull request #811 from akohlmey/check-latte-version
Tiny update to fix latte for checking library version
2018-02-21 10:54:58 -07:00
bcef43c7d1 add code to check the ABI version of the LATTE library 2018-02-21 12:11:02 -05:00
aa1503b7e0 Merge pull request #800 from athomps/fix_gcmc_segfault_fix
Added warning to discourage use of group all and fixed some segfault …
2018-02-21 09:50:22 -07:00
d9d072df65 Merge pull request #809 from Jc11235/fix_neb_old_tangent_implementation
added old tangent to fix_neb for AGNI potential
2018-02-21 09:49:39 -07:00
a3cd600052 Merge pull request #786 from jrgissing/per_atom_prop_group
per-atom property dynamic group
2018-02-21 09:48:49 -07:00
53fb7f4015 Merge pull request #810 from lammps/latte-error2
2nd try on LATTE error returns, plus a couple minor doc edits
2018-02-21 09:47:17 -07:00
a672874186 Update comment
Clarify the comment as to why this else branch was added and what this represents.
2018-02-21 10:04:13 +01:00
911529ab24 correct typo 2018-02-21 08:43:33 +01:00
a5a47899a3 make XDR support for dump style xtc compile on MacOSX 2018-02-20 22:10:21 +01:00
c399b75dec 2nd try on LATTE error returns, plus a couple minor doc edits 2018-02-20 12:52:12 -07:00
9cf99ef479 Merge pull request #806 from vishalkenchan/new_pair_lj_cut_coul_wolf
Lennard-Jones with Coulomb interactions accounted through Wolf sum
2018-02-20 11:55:37 -07:00
54740a0668 Merge pull request #804 from akohlmey/collected-small-changes
Collected small changes for next patch release
2018-02-20 11:54:24 -07:00
9f7b837f34 replace non-ASCII character 2018-02-20 17:18:56 +01:00
a8a38216ae added old tangent to fix_neb for AGNI potential 2018-02-20 10:06:24 -05:00
54dc73c771 correctly compute adjusted box lengths for triclinic boxes. code taken from topotools 2018-02-19 14:06:26 +01:00
7bd089aa6d fix typo 2018-02-19 14:05:50 +01:00
7ec4a5818d add USER-OMP versions of lj/cut/coul/wolf 2018-02-18 16:38:50 +01:00
44285f818f more cleanup and respa code removal 2018-02-18 16:37:41 +01:00
98bcf51a45 there is no support for multi-cutoff r-RESPA in lj/cut/coul/wolf 2018-02-18 16:07:00 +01:00
65870843a5 fix typo in stride2() description in variable command docs reported by Jerome Guterl 2018-02-18 15:37:35 +01:00
c864e55adb Lennard-Jones potential with Coulomb interactions accounted through Wolf summations 2018-02-18 14:20:59 +01:00
c4ea2f2b34 update long-range coulomb message formatting, so it fits better into other kspace output 2018-02-16 14:24:33 +01:00
a641e40e79 use Error::message() instead of Error::warning() to report whether coulomb tables are used or not 2018-02-16 14:11:58 +01:00
3d12cff8a5 Merge branch 'patch-1' of https://github.com/evoyiatzis/lammps into collected-small-changes 2018-02-16 10:55:25 +01:00
b220b647d4 Update error.cpp
When compiling with g++ (GCC) 4.4.7 20120313 (Red Hat 4.4.7-18) an error occurs: 
error.cpp: In member function ‘void Error::generate_error(unsigned int, std::string, std::string)’:
error.cpp:146: error: ‘exit’ was not declared in this scope
The fix is to include the #include <cstdlib> where the exit() function is decleared in the error.cpp file
2018-02-16 10:49:08 +01:00
a30ede80a6 avoid triggering misformatting of manual overview table with txt2html 2018-02-15 12:12:19 +01:00
2c4287630d allow dynamics groups for fix nve/limit and fix temp/rescale 2018-02-15 05:17:15 -05:00
f8daea5f3e make dihedrals and impropers header output consistent with bonds and angles 2018-02-15 05:13:59 -05:00
2aa693c46c update authors list and packages from http://lammps.sandia.gov/authors.html 2018-02-15 05:06:54 -05:00
4210abfc79 bugifx for using compute chunk/atom with compress via rerun or right at the beginning of a run 2018-02-13 18:15:17 +01:00
69f813b22e fix up formatting of tutorials for PDF manual 2018-02-13 16:41:23 +01:00
b3693f891b different style of AtC page headers that works well with html and pdf 2018-02-13 16:40:50 +01:00
1a213363f1 add group style to create an empty group directly 2018-02-13 14:54:30 +01:00
63714c7079 remove PDF-only .txt file from Sphinx documentation processing 2018-02-13 13:10:20 +01:00
60f411d655 update manual content list for recent updates 2018-02-13 12:47:36 +01:00
7b551bb594 add a short command overview page for the PDF manual only 2018-02-13 12:47:05 +01:00
b0d8fb2170 promote header levels for better formatting in pdf manual 2018-02-13 12:43:56 +01:00
44faa8e9f5 insert new toplevel text into USER-ATC docs, change header levels. 2018-02-13 12:43:32 +01:00
3ceec36b84 improve format 2018-02-13 12:38:48 +01:00
f890cdfb9e correct formatting in fix atc docs 2018-02-13 11:44:07 +01:00
3a909e15ae remove non-functional doxygen generated navigation header from AtC doc files 2018-02-13 11:43:52 +01:00
fcf552ffe1 Merge branch 'patch-4' of https://github.com/abbatux/lammps into collected-small-changes 2018-02-13 09:51:02 +01:00
378c5071bf protect library interface from issuing lammps commands during run and minimize 2018-02-12 14:26:05 -05:00
776f588746 add support for UFM pair style support to OpenCL compilation makefile 2018-02-12 18:43:30 +01:00
b9eaf98702 avoid uninitialized memory access errors reports from valgrind with fix qeq 2018-02-11 17:09:06 +01:00
afd39eb9b8 correctly represent, that the molecule summary refers to the largest type number and not the number of types 2018-02-11 16:17:24 +01:00
6efeab0f3a avoid segfault when using a hash as map on an empty system 2018-02-10 20:40:02 +01:00
7e78738c73 patch 5Feb18 2018-02-09 14:26:21 -07:00
8a39ae8585 remove dead code 2018-02-09 17:32:42 +01:00
a6eb521468 strip off unwanted ^M characters 2018-02-09 17:32:32 +01:00
3528f9ca27 fix bugs in documentation and implementation of atom style mdpd 2018-02-09 15:19:01 +01:00
2e99e54e23 Merge branch 'patch-2' of https://github.com/amilumas/lammps into collected-small-changes 2018-02-09 14:44:11 +01:00
a0de2f27a5 avoid segfaults in USER-MESO by checking for required atom style flags 2018-02-08 19:15:09 +01:00
21fe88ffa8 remove dead code in various neighbor list related source files 2018-02-08 13:07:56 -05:00
b49806d36a correct the logic for checking if fix is right
previously had incorrect logic for checking if fix is acceptable
2018-02-07 16:35:49 -05:00
49745968f2 make link unambiguous so sphinx is not confused 2018-02-06 16:57:27 +01:00
f914da62e0 fix typo 2018-02-06 16:57:27 +01:00
669ae02a85 apply pattern to ignore OPT package sources 2018-02-06 16:57:27 +01:00
1d403b2aa3 Added warning to discourage use of group all and fixed some segfault cases 2018-02-05 13:29:14 -07:00
fa4c7fc664 Merge pull request #781 from wmbrownIntel/user-intel-2018u1p2
USER-INTEL: Adding missing backslash for two Makefiles using Intel co…
2018-02-02 14:51:23 -07:00
401bfc52e1 Merge pull request #798 from akohlmey/always-use-internal-xdr
Replace OS provided XDR support with bundled code
2018-02-02 14:47:40 -07:00
984fda5e78 Merge pull request #797 from akohlmey/multifile-restart-bugfix
Address bug in multifile restart writing with step number included
2018-02-02 14:47:09 -07:00
196b3c81ef Merge pull request #796 from akohlmey/create-bonds-sanity-check
Sanity check on created/read-in bonds/angles/dihedrals/impropers
2018-02-02 14:46:46 -07:00
f4a79b4d8e Merge pull request #794 from akohlmey/tersoff-fixes
Consistent checking of Tersoff potential parameters
2018-02-02 14:46:11 -07:00
7441b062e9 Merge pull request #792 from pastewka/18_dump_nc1
Dumping to multiple files failed with an error message complaining about a missing 'append yes' option.
2018-02-02 14:45:52 -07:00
10d80ba9c3 Merge pull request #791 from akohlmey/charmm-cmap-docs-reference
Update CMAP related docs and rebuild example input decks
2018-02-02 14:44:58 -07:00
5383035828 Merge pull request #787 from akohlmey/user-atc-dep
Make the USER-ATC package depend on MANYBODY
2018-02-02 14:44:36 -07:00
dc4dd1591f Merge pull request #785 from jrgissing/imp_dihed_print
modifications to correctly print modified dihedrals, impropers
2018-02-02 14:44:15 -07:00
e4a1826dee Merge pull request #783 from numericalfreedom/lammps-doxygen
Added double quotes to a word in Section_tools.txt file
2018-02-02 14:41:56 -07:00
160edc9532 Merge pull request #782 from hheenen/user-mofff-contribution
User mofff contribution
2018-02-02 14:41:28 -07:00
553b3ff69a Merge pull request #778 from athomps/fix_gcmc_segfault_fix
Fixed recent segfault in fix gcmc and added mcmoves keyword
2018-02-02 14:40:14 -07:00
2913d3da60 Merge pull request #777 from lammps/fix_prop_atom
Fix bug in FixPropertyAtom
2018-02-02 14:39:42 -07:00
4af14becb5 Merge pull request #710 from rpleite/add-pair-ufm
Add the UFM pair potential - (GPU/OPT/OMP)
2018-02-02 14:38:28 -07:00
85fdf9eaba make links to papers unique across files 2018-02-02 10:10:27 +01:00
2ff278defa fully integrate ufm into documentation 2018-02-02 10:02:44 +01:00
bfcb71a8be add package file to .gitignore 2018-02-02 09:27:09 +01:00
c3d1cee5f9 try to use OS-provided (and obsoleted) RPC headers for XDR. always use bundled code 2018-02-02 09:23:02 +01:00
3e0cb9b463 rename examples to match usual naming conventions and add reference output. 2018-02-01 18:56:10 +01:00
b70149e86a include added docpages in toctrees for sphinx 2018-02-01 18:50:25 +01:00
080ce422ae correct incorrect reference 2018-02-01 18:40:28 +01:00
cc54848f7b adapt to current manual conventions 2018-02-01 18:40:17 +01:00
090ce7cecb remove tab char 2018-02-01 18:19:37 +01:00
3bc1c6b59e Address bug in multifile restart writing with step number included 2018-02-01 14:25:55 +01:00
38715d7f85 do not allow illegal combination of atom IDs in data files for bonds/angles/dihedrals/impropers 2018-01-31 06:08:04 -05:00
54a3096278 do not allow single bond/angle/dihedral definitions with illegal atom ID combinations 2018-01-31 05:59:19 -05:00
17d98d0915 make checking for tersoff parameters consistent across all implementations 2018-01-30 04:53:57 -05:00
9cf4ac8b7c DOC: Added netcdf and netcdf/mpiio to dump style supporting atom attributes. 2018-01-28 14:24:28 +01:00
4e4fd5f07c BUG: Dumping to multiple files failed with an error message complaining about a missing 'append yes' option. 2018-01-28 14:23:05 +01:00
9fd1e47968 ignore generated/copied files 2018-01-28 06:24:03 -05:00
6753977837 recreate 1ac7 input deck with up to date tools and LAMMPS binary. 2018-01-28 06:23:09 -05:00
031812b2bf recreate 1gb1 input deck with CMAP included. 2018-01-28 06:22:03 -05:00
cf8dae5ef3 explain position of fix cmap command in input for data and restart files 2018-01-28 06:20:03 -05:00
ba68548e38 clarify ch2lmp commands purpose in tools section 2018-01-28 06:19:33 -05:00
448c9c8d8a add a dependency on PairEAM/MANYBODY for installing USER-ATC 2018-01-23 16:27:06 +01:00
13c08225ed per-atom property dynamic group 2018-01-23 00:16:51 -07:00
d2da49cdf9 modifications to correctly print modified dihedrals, impropers 2018-01-22 23:56:11 -07:00
e72faf3d7f Added double quotes to a word in Section_tools.txt file in order to activate
Sphinx hyperlink.
2018-01-21 20:55:04 +01:00
3f967e3d84 cmake: add USER-MOFFF 2018-01-21 08:10:38 -07:00
5212e95787 added src/USER-MOFFF/README 2018-01-21 13:34:02 +01:00
f7e2bf239f Added MOF-FF src, doc and example files 2018-01-21 11:40:48 +01:00
a802b750a6 USER-INTEL: Adding missing backslash for two Makefiles using Intel compiler. 2018-01-17 21:59:37 -08:00
9bb7f1ddf6 Fixed recent segfault in fix gcmc and added mcmoves keyword 2018-01-17 13:45:15 -07:00
5e9d257ec2 patch 17Jan18 2018-01-17 13:00:48 -07:00
415a55bc3e Fix bug in fix_property_atom 2018-01-17 10:41:56 -07:00
e1e6825eb2 Merge pull request #776 from numericalfreedom/lammps-tools-doxygen
Small character corrections to the file Developer.dox.lammps
2018-01-17 07:34:18 -07:00
88a2f9fcc6 Merge pull request #775 from wmbrownIntel/user-intel-2018u1
USER-INTEL: Adding compiler flag and small fix to tersoff/intel for 2…
2018-01-17 07:34:08 -07:00
480d7dd6ce Merge pull request #774 from lammps/neigh-tweak
small changes to recent PR to standardize with other npair styles
2018-01-17 07:33:46 -07:00
9b12984378 Small correction in image caption in Developer.dox.lammps 2018-01-17 14:46:44 +01:00
8d29f64236 Small character corrections to the file Developer.dox.lammps 2018-01-17 14:05:30 +01:00
1b91c0eab0 fix typo in docs resulting in broken link 2018-01-16 21:01:25 -05:00
0c8af0704e Tweak to npair_halffull_newtoff.cpp 2018-01-16 16:43:25 -07:00
f1901237be small changes to recent PR to standardize with other npair styles 2018-01-16 15:49:16 -07:00
0cd864134d Merge pull request #765 from stanmoore1/halffull_ghost
Add ghost option to npair_halffull
2018-01-16 15:39:07 -07:00
bf48f3e240 Merge pull request #758 from mkanski/ci-ReaxFF
Modification of ReaxFF
2018-01-16 13:04:20 -07:00
23dda3d51b Merge pull request #770 from numericalfreedom/lammps-tools-doxygen
Tools for LAMMPS documentation for developers with the "doxygen" documentation platform
2018-01-16 13:02:10 -07:00
5d254855eb Merge pull request #772 from akohlmey/improved-variable-error-reporting
More improved variable error reporting
2018-01-16 13:00:42 -07:00
9a70f2d182 Merge pull request #773 from lammps/couple-simple
update of COUPLE/simple examples
2018-01-16 12:59:51 -07:00
b95cf658c7 remove faulty line of code, left in by accident 2018-01-16 14:10:46 -05:00
709ce8a230 Merge branch 'neigh-identical-check' into couple-simple
# Conflicts:
#	src/create_bonds.cpp
#	src/delete_atoms.cpp
2018-01-16 14:09:21 -05:00
2ad823ffd4 correct check for identical requests 2018-01-16 14:08:18 -05:00
4c0cd5f1ad add short bond cutoff warning also to USER-OMP
This implements the warning about a total cutoff shorter than 2x bond cutoff also to the USER-OMP variant of reax/c
2018-01-16 13:50:49 -05:00
8d37c89cb6 different bug fix for create_bonds, delete_atoms neigh list issue 2018-01-16 11:32:37 -07:00
21ff4407ab update of COUPLE/simple examples 2018-01-16 10:48:38 -07:00
f2c0c4a7d1 Merge branch 'lammps-tools-doxygen' of https://github.com/numericalfreedom/lammps into lammps-tools-doxygen 2018-01-16 18:39:08 +01:00
1640066132 Merge remote-tracking branch 'lammps-origin/master' into lammps-tools-doxygen 2018-01-16 18:38:12 +01:00
3b1ec14a68 add a warning if the bonded cutoff is large
This should print a warning when 2x the bonded interaction cutoff list larger then other cutoffs, as was the setting before the performance optimization with the change in 2690075405
2018-01-16 12:01:47 -05:00
01cfb710ff propagate printing variable name with error deeper into the code
this now covers a large set of cases where the variable name can be printed.
it also is complete for the current code, since no more default arguments are required
2018-01-16 11:31:20 -05:00
3de39c70c1 print variable name with errors only for known variables.
this makes errors for "anonymous" evaluations (if statement, immediate variables) less confusing.
2018-01-16 11:29:48 -05:00
86ed55599d The bash shell script doxygen.sh has been revised. 2018-01-16 17:28:58 +01:00
e798cdf31f Merge pull request #771 from stanmoore1/reax_example
Add ReaxFF Example
2018-01-16 09:05:36 -07:00
97dd812647 Merge pull request #769 from rbberger/cmake_compilation_fixes
CMake compilation fixes
2018-01-16 09:04:04 -07:00
e07a6d1e34 Merge pull request #768 from akohlmey/collected-doc-fixes
collected documentation fixes
2018-01-16 09:03:45 -07:00
6e37272c9d Merge pull request #764 from akohlmey/improved-variable-error-reporting
Improved error messages when defining or evaluating variables
2018-01-16 09:02:20 -07:00
6bd6e62767 Merge pull request #763 from stanmoore1/kk_neighlist
Enhance Kokkos Neighbor lists
2018-01-16 09:01:15 -07:00
57dd6c78c1 Merge pull request #761 from stanmoore1/kk_snap
Kokkos version of Pair SNAP and ZBL
2018-01-16 09:00:52 -07:00
9e413bf57a Merge pull request #760 from akohlmey/info-coeffs
New "coeffs" keyword added to "info" command
2018-01-16 09:00:34 -07:00
b374813104 Add reax example 2018-01-16 08:50:30 -07:00
07ddb5e62c USER-INTEL: Adding compiler flag and small fix to tersoff/intel for 2018u1 compilers. 2018-01-15 23:54:48 -08:00
72b479d42e Add missing return value in pair_snap_kokkos 2018-01-15 11:01:07 -07:00
c8b5d83cc7 mention tool/doxygen folder in tools section and refer to README file 2018-01-15 10:43:30 -05:00
a5998179bf Fix issues with Kokkos skip lists 2018-01-15 08:23:39 -07:00
26d6f6d1f1 Tools for LAMMPS documentation with the "doxygen" documentation platform
are provided.

        New directory: tools/doxygen

        New file:      tools/doxygen/Developer.dox.lammps
        New file:      tools/doxygen/Doxyfile.lammps
        New file:      tools/doxygen/doxygen.sh
        New file:      tools/doxygen/README

The Developer.dox.lammps file contains a slightly revised version of the
Developer.pdf file adopted to the LAMMPS "doxygen" documentation.

The Doxyfile.lammps file is a first proposal for a LAMMPS "doxygen"
documentation flavor and can be adjusted to specific requirements.

The "doxygen.sh" shell script generates the LAMMPS "doxygen"
documentation.

Detailed instructions can be found in the README file.
2018-01-15 15:42:31 +01:00
f37f4f0041 support more cases where the variable name is reported on errors 2018-01-14 17:56:03 -05:00
d2983caad4 CMake: limit visibility of COLVARS lepton library headers 2018-01-14 18:01:19 +01:00
2b7c233791 Simplify change to CMake build for USER-COLVARS 2018-01-14 08:44:50 +01:00
9e35e76b8c Fix issues in Kokkos npair_halffull and npair_skip 2018-01-13 21:32:59 -07:00
7a78875911 Fix issues in Kokkos pair snap and zbl 2018-01-13 21:31:11 -07:00
1cfc3118cc CMake: remove BUILD_SHARED_LIBS requirement from PYTHON package 2018-01-13 22:17:23 +01:00
23e8fb0542 Update CMake build for USER-COLVARS 2018-01-13 21:57:24 +01:00
72eb2dab52 Add missing math.h header 2018-01-13 20:41:05 +01:00
f6075c9d2c One last tweak to npair_halffull_newtoff.cpp 2018-01-12 16:12:57 -07:00
24f1889b02 Only include ghosts for newton off, since this style exists as a standalone build, but the newton on method doesn't 2018-01-12 16:10:42 -07:00
dea8d592da Optimize npair_halffull styles; the number of i atoms, whether owned or ghost, must match between the child half list and parent full list 2018-01-12 15:51:54 -07:00
52d3e98f3b Fix issue in npair_skip_kokkos 2018-01-12 15:45:24 -07:00
6e3acce3be Relax restriction in neighbor.cpp 2018-01-12 15:44:11 -07:00
1ec54827d6 Add Kokkos halffull neighbor list capability 2018-01-12 15:41:59 -07:00
61ebf6265a address some formatting/markup issues reported by Nandor Tamaskovics 2018-01-12 12:50:02 -05:00
190cc78034 add dummy doc files for not-yet-implemented features 2018-01-12 12:29:03 -05:00
5863f115dd correctly escape 'a_ ' text, which is not a reference unlike 'a_b ' 2018-01-12 12:26:50 -05:00
75d259f5ee improve PDF reader compatibility for the created PDF file. 2018-01-12 12:00:53 -05:00
3b1b9a2cbf replace non-ASCII quotation marks with ASCII equivalent 2018-01-12 11:30:27 -05:00
17b6a4c3cd Added more permanent citation 2018-01-12 11:47:35 +01:00
1c10c78684 Add ghost option to npair_halffull 2018-01-11 15:15:04 -07:00
26917280be state name of the affected variable in error messages where possible 2018-01-11 15:01:08 -05:00
45674e6cd3 Add Kokkos skip list capability 2018-01-11 10:07:44 -07:00
22d2d1cdf3 Fix issue in pair_snap_kokkos memory_usage 2018-01-11 10:01:34 -07:00
0d7bee40ae Add newline at end of pair_snap_kokkos_impl.h 2018-01-11 09:41:37 -07:00
db1ed32a51 Fix minor issues in pair_snap_kokkos 2018-01-11 09:39:53 -07:00
d7d087ae67 Fix issue with peratom energy/virial in pair_snap_kokkos 2018-01-10 10:20:40 -07:00
92e2df74c1 Fix bug in Kokkos peratom energy/virial with newton on 2018-01-10 10:20:12 -07:00
92742c5373 Introduced the change in reax/c/omp 2018-01-10 18:00:22 +01:00
2047ae76e3 Move compute_bi outside of j-loop 2018-01-09 17:05:57 -07:00
4adbb882b3 Temper SNAP output 2018-01-09 17:05:34 -07:00
275c08453f Add Kokkos versions of pair_style snap and zbl 2018-01-09 17:03:49 -07:00
91107cc1f3 add a "coeffs" keyword to the info command for debugging "All XXX coeffs are not set" errors. 2018-01-09 12:47:33 -05:00
e26c170679 Added example and tabulated close-range correction 2018-01-09 15:08:08 +01:00
1bd9e175e9 Merge pull request #749 from akohlmey/collected-bugfixes-and-updates
Collected bugfixes and updates for the next patch release
2018-01-08 09:20:18 -07:00
9e9cfe5869 Merge pull request #754 from rbberger/cmake_kokkos_bugfix
CMake bugfixes for KOKKOS builds
2018-01-08 09:16:43 -07:00
85ff0c1e46 Merge pull request #750 from stanmoore1/kk_fences
Add Kokkos thread fences to comm pack/unpack routines
2018-01-08 09:16:16 -07:00
cc9b6118b8 Merge pull request #748 from stanmoore1/kk_docs
Update Kokkos docs
2018-01-08 09:15:36 -07:00
09bed0c09a Merge pull request #747 from stanmoore1/kk_reax_hist
Fix broken charge history in fix qeq/reax/kk
2018-01-08 09:15:21 -07:00
1b51efd6b8 Merge pull request #744 from akohlmey/doc-update
Documentation build updates
2018-01-08 09:15:02 -07:00
8888b05b18 Merge pull request #742 from rbberger/fix_python_move
Fix python/move
2018-01-08 09:14:36 -07:00
3bb8294f31 Merge pull request #718 from timattox/USER-DPD_es_RNG
USER-DPD: External State RNG
2018-01-08 09:13:11 -07:00
450c689ae9 Merge pull request #725 from stanmoore1/kk_update
Update the Kokkos library in LAMMPS to v2.5.00
2018-01-08 09:12:51 -07:00
a5d401e164 Fixed header for the force field file 2018-01-08 14:46:32 +01:00
b96100c0b7 Fixed header for the force field file 2018-01-08 14:42:43 +01:00
2690075405 Performance increase for charge-implicit ReaxFF/changed cutoff selection 2018-01-08 14:38:24 +01:00
f77483e437 adapt #include statements to current LAMMPS conventions 2018-01-06 19:44:07 -05:00
11cddd8798 explicitly include math.h 2018-01-06 19:42:40 -05:00
09ca7b32fc Revert "no need to include library.o in the LAMMPS executable"
This reverts commit 4a3a6b4455.
As it turns out, when using the LAMMPS python wrapper from inside
code using the PYTHON package, the library symbols *are* needed.
Thanks for Richard Berger (@rbberger) for pointing this out.
2018-01-06 19:47:33 +01:00
3af389e6cf Revert "no need to include library.o in the LAMMPS executable"
This reverts commit 4a3a6b4455.
As it turns out, when using the LAMMPS python wrapper from inside
code using the PYTHON package, the library symbols *are* needed.
Thanks for Richard Berger (@rbberger) for pointing this out.
2018-01-06 12:58:17 -05:00
46217db8a5 make python functions examples more complete by adding exception handling and initializing variables 2018-01-06 12:56:42 -05:00
d6d7dde653 Add error output if python evaluation failed 2018-01-06 18:54:55 +01:00
6070182f06 correctly account for individually added bonds, angles, and dihedrals 2018-01-06 11:03:48 -05:00
6c058fb56c avoid division by zero in ewald for empty and uncharged systems. require kspace_modify gewald 2018-01-05 20:14:25 -05:00
91993b236d avoid division by zero in PPPM for empty and uncharged systems. require kspace_modify gewald 2018-01-05 19:52:51 -05:00
5ecc3ce366 avoid division by zero when trying to run PPPM on a system without atoms 2018-01-04 20:44:40 -05:00
75f1a4f3f0 use filelink.o consistently, since filelink does not work with some compilers, e.g. nvcc 2018-01-04 20:43:53 -05:00
ffc74fca6c Merge branch 'fix_property_atom_doc_update' of https://github.com/Pakketeretet2/lammps into collected-bugfixes-and-updates
this closes PR #755
2018-01-04 19:46:31 -05:00
2896df2140 avoid that occasional neighbor lists requested from commands linger around for too long and thus cause segementation faults 2018-01-04 17:16:31 -05:00
c333401e72 Use bold font instead of underscores for emphasis. 2017-12-25 13:27:14 +01:00
a9e9a2046b Fixes/clarifies the fix_property_atom docs. 2017-12-25 13:03:18 +01:00
d4f45f4f85 correct set command example in fix property/atom 2017-12-24 17:45:58 -05:00
7d07baa8ad Better load balance fix_qeq_reax_kokkos for half neigh list 2017-12-21 11:07:51 -07:00
b9184ef441 Add special KOKKOS styles individually
This avoids unnecessary dependencies
2017-12-20 04:51:46 -05:00
ff2b61354d Bugfix for building LAMMPS+KOKKOS+DPD with CMake
Resolves issue #753, but there might be more work ahead.
2017-12-20 03:17:40 -05:00
18acc6ae47 remove some dead code 2017-12-19 15:01:11 -05:00
56e633a2cf error out on trying to compile USER-INTEL with -DLAMMPS_BIGBIG 2017-12-19 14:54:35 -05:00
798d68c607 Edits to accelerate_kokkos.txt 2017-12-18 14:50:33 -07:00
46fe0a968b Fix compiler warnings in atom_vec_hybrid_kokkos 2017-12-18 14:09:39 -07:00
00a9672524 Fix issue in fix_qeq_reax_kokkos, can't call child function from base constructor 2017-12-18 13:58:37 -07:00
a2756db66b Update to Kokkos library v2.5.00 2017-12-15 16:42:06 -07:00
da83feb8ca Merge branch 'master' into kk_update 2017-12-15 16:36:21 -07:00
a7bc3ed391 Add missing fences in comm_kokkos 2017-12-15 13:30:17 -07:00
68cf6941e1 Add Kokkos thread fences to pack/unpack routines 2017-12-15 13:01:38 -07:00
73c55ac4d1 Fix up docs after renaming 2017-12-15 14:06:16 -05:00
2a131d1416 Merge remote-tracking branch 'upstream/master' into fix_python_move 2017-12-15 13:56:54 -05:00
bcc5f49d0b Rename fix python to fix python/invoke 2017-12-15 13:53:04 -05:00
950bfb84a9 Clean up after renaming back to fix python/move 2017-12-15 13:27:27 -05:00
4d725c3153 Revert "Rename fix python/move to move/python"
This reverts commit 4d915dba08.
2017-12-15 13:17:12 -05:00
10fa54b2fd correct error messages. the atom style is called "smd" not "tlsph" 2017-12-13 18:44:31 -05:00
8a36cdc6bc correct velocity output for write_data of atom style smd 2017-12-13 18:42:24 -05:00
e5cd068cd5 Merge branch 'patch-3' of https://github.com/abbatux/lammps into collected-bugfixes-and-updates
This closes #745
2017-12-13 17:41:00 -05:00
cec22dda92 change pair style airebo/intel to compile with -DLAMMPS_BIGBIG 2017-12-13 16:20:49 -05:00
9a71efc5d5 fix neb bugfix from Emile Maras
NEB was not working fine when using multiple proc
per replica and the keywords last/efirst or last/efirst/middle

I have corrected this in the enclosed fix_neb.cpp

I also slightly modified the nudging for this free end so that
it would be applied only when the target energy is larger than
the energy. Anyway if the target energy is lower than the energy,
the replica should relax toward the target energy without adding
any nudging.

I also modified the documentation according to this change.
2017-12-13 15:19:46 -05:00
2f857c6eda correct fix neigh/history/omp to properly support -DLAMMPS_BIGBIG compilation 2017-12-13 15:12:14 -05:00
8a93f63de9 Update Kokkos docs 2017-12-13 10:05:53 -07:00
193252275f A few more tweaks to charge history in fix_qeq_reax_kokkos 2017-12-12 09:54:28 -07:00
5968850306 Fix broken charge history in fix_qeq_reax_kokkos 2017-12-12 09:20:09 -07:00
3291a4fe96 Revert "no need to include library.o in the LAMMPS executable"
This reverts commit 4a3a6b4455.
As it turns out, when using the LAMMPS python wrapper from inside
code using the PYTHON package, the library symbols *are* needed.
Thanks for Richard Berger (@rbberger) for pointing this out.
2017-12-11 08:08:49 -05:00
1b07a4edee Fix memory leak in pair python 2017-12-10 17:14:08 -05:00
16d6dfcab6 Bugfix for effective plastic strain rate calc 2017-12-08 11:40:44 +11:00
0edad83b25 Update atom_vec_smd.cpp 2017-12-08 11:29:12 +11:00
81a1c007ed correct file name for doc file 2017-12-07 16:39:41 -05:00
0b51e9b2ff add documentation for fix move/python 2017-12-07 16:36:36 -05:00
4b1bcaa1ae fix speelink in documentation files 2017-12-07 16:01:02 -05:00
ed8680d695 suspend support for sphinxcontrib.images
the sphinxcontrib.image extension was broken with sphinx 16.x.
however, sphinx 15.x breaks with newer version of the multiprocessor module.
so we suspend the thumbnail processing and lift the lock to sphinx 15.x

also, the number of parallel sphinx tasks is can be overridden with SPHINXEXTRA="-j #'.
default is to try use all local CPU cores.
2017-12-07 15:38:15 -05:00
29df5a536f Merge branch 'master' of https://github.com/lammps/lammps into USER-DPD_es_RNG 2017-12-07 10:57:01 -07:00
d029cb9002 Merge pull request #743 from stanmoore1/kk_yukawa_fix
Fix compile error in pair_yukawa_kokkos
2017-12-07 10:31:04 -07:00
3e99d1a83a Add pair yukawa/kk to Section_commands 2017-12-07 09:06:33 -07:00
c4e83be533 Fix compile error in pair_yukawa_kokkos 2017-12-07 08:42:17 -07:00
d7e5d60f90 Merge pull request #738 from rbberger/pylammps_thermo_style_fix
PyLammps bugfix to support custom thermo output with vector element addressing
2017-12-07 08:25:01 -07:00
5179efd2bb Merge pull request #741 from stanmoore1/kk_compile
Reduce Kokkos compile dependencies
2017-12-07 08:24:22 -07:00
abb2fe5be7 Merge pull request #740 from stanmoore1/improve_reax
Improve ReaxFF
2017-12-07 08:23:47 -07:00
bae45e2493 Merge pull request #737 from akohlmey/collected-bugfixes
Collected bugfixes and small updates for next patch
2017-12-07 08:23:06 -07:00
73d509f339 Merge pull request #735 from jaapkroe/extep
Add ExTeP pair style
2017-12-07 08:22:34 -07:00
fa0c28b717 Merge pull request #731 from Pakketeretet2/pair-yukawa-kk
Added a KOKKOS-enabled Yukawa pair style.
2017-12-07 08:21:20 -07:00
bc3a84b480 Merge pull request #727 from lammps/fix-gcmc-examples
new example scripts for fix gcmc
2017-12-07 08:19:56 -07:00
4d915dba08 Rename fix python/move to move/python 2017-12-05 23:42:57 -05:00
f64544a5fe Move instantiation of MemoryKokkos class 2017-12-05 08:34:24 -07:00
fc742eb2ef Remove outdated elastic constants 2017-12-05 16:23:20 +01:00
1baecc689e Merge pull request #3 from stanmoore1/kk_yukawa
Add pair_yukawa_kokkos to Install.sh and minor cleanup.

These changes look fine. Sorry for the tabs, I must have forgotten about those.
2017-12-04 14:16:53 -05:00
d916416cc5 Add pair_yukawa_kokkos to Install.sh and minor cleanup 2017-12-04 12:02:32 -07:00
2813923f15 Add multiple inheritance to pair_multi_lucy_rx_kokkos 2017-12-04 10:43:41 -07:00
4a3a6b4455 no need to include library.o in the LAMMPS executable 2017-12-03 19:37:42 -05:00
f8891a4451 Rename fix python/integrate to python/move
This is to avoid confusion to what LAMMPS considers to be an
integrator like Verlet and RESPA.
2017-12-02 01:04:46 -05:00
51688b2504 Improve performance of Python integrator (NVE_Opt version)
Removing the loop over atoms by using NumPy array indexing allows to recover
performance close to that of plain fix nve.
2017-12-02 00:40:21 -05:00
93be2d264e Detect correct integer type in lammps python interface 2017-12-02 00:39:15 -05:00
b9fd1156b2 Completed first version of fix python/integrate
This includes an example of how to implement fix NVE in Python.

The library interface was extended to provide direct access to atom data using
numpy arrays. No data copies are made and numpy operations directly manipulate
memory of the native code.

To keep this numpy dependency optional, all functions are wrapped into the
lammps.numpy sub-object which is only loaded when accessed.
2017-12-02 00:39:15 -05:00
bbfe16782b Adjust .gitignore 2017-12-02 00:37:14 -05:00
1931d2088a Started FixPythonIntegrate 2017-12-02 00:37:14 -05:00
5d9a6c1fe2 Add checks to Kokkos Install.sh so that files aren't unnecessarily recompiled 2017-12-01 16:06:50 -07:00
e7f97728c3 disable disruptive debug output 2017-12-01 17:14:11 -05:00
58ed92d905 one more file that doesn't require to include accelerator_kokkos.h 2017-12-01 16:45:22 -05:00
14aa036f36 add missing header files to USER-INTEL package 2017-12-01 15:53:02 -05:00
42e03da70c Remove redundant #include in input.cpp 2017-12-01 13:16:35 -07:00
5d2e097b27 Need dynamic cast for multiple inheritance 2017-12-01 12:53:40 -07:00
da51a8a0bb Add missing header files to GPU package 2017-12-01 12:13:14 -07:00
80dffb27e2 Add missing header files 2017-12-01 11:33:42 -07:00
5b33f153f4 Add newline to memory_kokkos.h 2017-12-01 10:33:47 -07:00
31eb12920c Use multiple inheritance to remove accelerator_kokkos.h out of region.h and kspace.h 2017-12-01 10:18:22 -07:00
31f2ca1e4c Use multiple inheritance to remove accelerator_kokkos.h out of pair.h 2017-12-01 09:51:40 -07:00
15a3364c2c Make memory_kokkos its own class 2017-12-01 09:13:31 -07:00
c3aa705d04 Improve performance of pair_reaxc, this change is safe because the non-bonded i-loop doesn't include ghost atoms; this optimization is already included in the USER-OMP version 2017-11-30 09:22:32 -07:00
8c2d38c7e9 Remove non-existent function in reaxc_forces_omp 2017-11-30 09:13:03 -07:00
e3b961b622 Improve performance of PairReaxCKokkos 2017-11-30 09:10:39 -07:00
319508bd29 fix scoping ambiguity issue that confuses nvcc 2017-11-30 10:56:58 -05:00
6f7bd78ea2 Fixes issue #701
PyLammps now supports thermo_style entries such as c_msd[4]
2017-11-29 01:06:44 -05:00
5647522906 various small cosmetic adjustments to increase conformance with LAMMPS programming conventions 2017-11-28 12:34:23 -05:00
e4b14213b4 delete old log files. new log files are approved by @athomps 2017-11-28 11:35:49 -05:00
fa6fc947f2 fix issues in FixNeighHistory and FixNeighHistoryOMP reported in https://sourceforge.net/p/lammps/mailman/message/36138319/
This supersedes and closes PR #734
2017-11-28 11:28:15 -05:00
e1189381e0 correct documentation for create_atoms rotate
This closes #736
2017-11-28 11:19:19 -05:00
39d24ab7eb ExTeP potential file header update 2017-11-27 21:25:23 +01:00
5770a20e2c added ExTeP to USER-MISC 2017-11-27 21:16:51 +01:00
83ec9815fe Merge pull request #733 from pastewka/17_dump_nc3
BUG: Proper handling of bigint data in NetCDF dump style. Affects LAMMPS version compiled with LAMMPS_BIGBIG.
2017-11-27 11:07:58 -07:00
90ee52296b Merge remote-tracking branch 'andeplane/fix_ave_chunk_bug' into collected-bugfixes
this closes PR #732
2017-11-27 11:45:09 -05:00
f02eb225c6 Merge branch '17_dump_nc3' of github.com:pastewka/lammps into 17_dump_nc3 2017-11-26 22:39:03 +01:00
a111cf640a BUG: Proper handling of bigint data. Corrects behavior when compiled with LAMMPS_BIGBIG. 2017-11-26 22:35:56 +01:00
e755a8339d BUG: openfile is called multiple times, second call stopped code with 'at keyword requires use of append yes' 2017-11-26 22:31:47 +01:00
f7f6a15ac0 MAINT: Removed superfluous code. 2017-11-26 22:31:47 +01:00
36b7aa73aa MAINT: Use proper data type for bigint when defining NetCDF file. 2017-11-26 22:31:47 +01:00
9a5723123f Set peratom_freq in fix ave/chunk 2017-11-21 23:43:52 -08:00
7d07f062b6 Remove const from variable 2017-11-20 10:21:19 -07:00
f3ed148828 Fix for big endian machines 2017-11-20 10:18:53 -07:00
5ba80662c3 Undid the removal of rad in pair_yukawa. 2017-11-17 15:07:59 -05:00
53c1558271 Updated docs for pair_yukawa 2017-11-17 14:21:54 -05:00
8e5d4fa891 Added a KOKKOS-enabled Yukawa pair style. 2017-11-17 14:12:16 -05:00
ec067bde36 fix cut-n-paste error in create_bond docs 2017-11-13 17:59:16 -05:00
adbc75cae6 add alternate log files with the latest version of LAMMPS 2017-11-13 11:52:01 -05:00
dde94c28a7 new example scripts for fix gcmc 2017-11-13 09:07:25 -07:00
f2dc764d1d Merge pull request #723 from lammps/replicate_bbox
Add bounding box to Replicate command
2017-11-13 09:01:38 -07:00
c4c59b909e Merge pull request #716 from akohlmey/collected-small-changes
Collected small changes and bugfixes for next patch
2017-11-13 09:00:26 -07:00
e2e21f0661 Merge pull request #714 from Pakketeretet2/user-manifold-plane-wiggle-fix
User manifold plane wiggle fix
2017-11-13 08:59:40 -07:00
6abf68f614 Merge pull request #712 from akohlmey/linalg-for-latte
Update lib/linalg for use with lib/latte
2017-11-13 08:59:18 -07:00
a97553a92e Merge pull request #709 from abbatux/patch-1
Update pair_smd_tlsph.cpp
2017-11-13 08:58:29 -07:00
dbd4acc4d6 Merge pull request #708 from abbatux/patch-2
Update smd_material_models.cpp
2017-11-13 08:58:07 -07:00
40e776ebc6 Remove OpenMP from KOKKOS_DEVICES in Kokkos CUDA Makefiles since normally this doesn't improve performance 2017-11-10 09:55:11 -07:00
f043212511 USER-DPD: fix a segfault when using constant temperature (DPD vs. DPDE) 2017-11-07 13:57:29 -06:00
4342bcdafc Fix CUDA issue in USER-DPD/random_external_state.h 2017-11-07 09:17:58 -07:00
2e40c00995 add option to the print command to also print to the global universe screen and logfile 2017-11-07 10:00:57 -05:00
f39c6213e1 Change path to nvcc_wrapper 2017-11-06 13:50:16 -07:00
88474fc5c2 Remove Kokkos tpls directory 2017-11-06 13:48:26 -07:00
16b5315845 Update Kokkos to v2.04.11 2017-11-06 13:47:33 -07:00
e337db4059 Replicate bbox from Chris Knight 2017-11-06 11:31:43 -07:00
ba43465268 Merge branch 'collected-small-changes' of github.com:akohlmey/lammps into collected-small-changes 2017-11-06 13:30:08 -05:00
09c61ca598 correct listing of USER-OMP variants of fix rigid styles 2017-11-06 13:29:59 -05:00
0f971bf07c print name of unknown or incorrect variable in error message 2017-11-06 10:41:32 -05:00
5a8c5eb479 provide last input command line with error->one() output 2017-11-06 10:41:01 -05:00
aa0d6cd75b Merge branch 'collected-small-changes' of github.com:akohlmey/lammps into collected-small-changes 2017-11-04 02:49:28 -04:00
b34000a5e1 make *_gpu_reinit() functions consistent in returning void. correct prototypes in src/GPU, too.
this supersedes and closes #719
2017-11-04 02:49:22 -04:00
279339ebd0 Remove the now unused AIRct_ssa[] array from the NeighList class. 2017-11-03 13:42:36 -05:00
605fe53c07 USER-DPD: make the kokkos and non-kokkos fix_shardlow match more closely
This was accomplished with several key changes:
1) Modified fix_shardlow's control flow to match fix_shardlow_kokkos so
that random numbers are pulled fromn the RNGs in exactly the same order.

2) Created random_external_state.h, a simplified version of the Kokkos
random number generator that keeps its state variables external to itself.
Thus it can be used both with and without Kokkos enabled, as long as the
caller stores and passes in the required state variable.

3) Replaced all references to random_mars.h and Kokkos_Random.hpp code in
the fix_shardlow* files with calls to the random_external_state.h code,
guaranteeing that fix_shardlow* is using an identical RNG in all cases.

Result: most (56 of 61) of our internal tests now generate the same results
with kokkos turned on or off.  Four cases still differ due to what appear
to be vectorization caused rounding differences, and the fifth case
appears to be something triggered by the kokkos "atom_style hybrid" code.
2017-11-03 12:51:37 -05:00
65b77230fd added missing "dihedral" in compute dihedral/local docs 2017-11-02 15:04:04 -04:00
91e4bcca33 BUG: openfile is called multiple times, second call stopped code with 'at keyword requires use of append yes' 2017-11-01 21:28:14 +01:00
7ef17efe2e MAINT: Removed superfluous code. 2017-11-01 21:20:19 +01:00
8a804460f9 MAINT: Use proper data type for bigint when defining NetCDF file. 2017-11-01 21:19:55 +01:00
f6658d10b7 fix incorrect create_atoms example for selecting created atoms with a variable 2017-10-30 23:33:26 -04:00
f4d0aa3393 correct cut-n-paste bug reported by Massimo Pica Ciamarra on lammps-users 2017-10-27 11:25:57 -04:00
99a6c6edb4 Fixed a typo in manifold plane wiggle. 2017-10-26 12:33:16 -04:00
a26ffc7ff7 Reset plane wiggle in master. 2017-10-26 12:32:30 -04:00
b002e071e7 Reset some files back to upstream. 2017-10-26 12:31:30 -04:00
9f44e3e5b0 Merged upstream. 2017-10-26 12:26:34 -04:00
e79cd6c62c Moved some stuff around. 2017-10-26 12:25:55 -04:00
82c6fd609e Merge branch 'master' of https://www.github.com/lammps/lammps 2017-10-26 12:06:57 -04:00
2dbb44f2c6 provide Makefile.lammps template for use with bundled linalg lib 2017-10-24 13:38:04 -04:00
d1630bbe34 add missing BLAS/LAPACK functions used by LATTE to linalg lib 2017-10-24 13:22:20 -04:00
941ee565a1 Added lal_ufm_ext.cpp in lib/gpu 2017-10-24 11:12:51 -02:00
b63acf6843 Added the UFM files (doc/src - lib/gpu - src) 2017-10-24 11:11:10 -02:00
41c25877e8 Update smd_material_models.cpp
The pressure pFinal using ShockEOS() was of the wrong sign when Gamma = 0.
2017-10-24 11:04:11 +11:00
253a17b6d0 Update pair_smd_tlsph.cpp
Correction of a typo in the computation of LAME_LAMBDA.
2017-10-23 12:45:58 +11:00
0448bc9caf Merged stuff. 2017-09-25 18:31:32 -04:00
955 changed files with 119728 additions and 19695 deletions

View File

@ -104,7 +104,7 @@ set(OTHER_PACKAGES KIM PYTHON MSCG MPIIO VORONOI POEMS LATTE
USER-ATC USER-AWPMD USER-CGDNA USER-MESO
USER-CGSDK USER-COLVARS USER-DIFFRACTION USER-DPD USER-DRUDE USER-EFF
USER-FEP USER-H5MD USER-LB USER-MANIFOLD USER-MEAMC USER-MGPT USER-MISC
USER-MOLFILE USER-NETCDF USER-PHONON USER-QTB USER-REAXC USER-SMD
USER-MOFFF USER-MOLFILE USER-NETCDF USER-PHONON USER-QTB USER-REAXC USER-SMD
USER-SMTBQ USER-SPH USER-TALLY USER-UEF USER-VTK USER-QUIP USER-QMMM)
set(ACCEL_PACKAGES USER-OMP KOKKOS OPT USER-INTEL GPU)
foreach(PKG ${DEFAULT_PACKAGES})
@ -170,13 +170,6 @@ if(ENABLE_KSPACE)
endif()
endif()
if(ENABLE_MISC)
option(LAMMPS_XDR "include XDR compatibility files for doing particle dumps in XTC format" OFF)
if(LAMMPS_XDR)
add_definitions(-DLAMMPS_XDR) # for liblammps
endif()
endif()
if(ENABLE_MSCG OR ENABLE_USER-ATC OR ENABLE_USER-AWPMD OR ENABLE_USER-QUIP OR ENABLE_LATTE)
find_package(LAPACK)
if(NOT LAPACK_FOUND)
@ -198,14 +191,13 @@ if(ENABLE_PYTHON)
add_definitions(-DLMP_PYTHON)
include_directories(${PYTHON_INCLUDE_DIR})
list(APPEND LAMMPS_LINK_LIBS ${PYTHON_LIBRARY})
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})
if(NOT BUILD_SHARED_LIBS)
message(FATAL_ERROR "Python package need lammps to be build shared, use -DBUILD_SHARED_LIBS=ON")
if(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()
@ -401,6 +393,10 @@ foreach(SIMPLE_LIB REAX MEAM POEMS USER-ATC USER-AWPMD USER-COLVARS USER-H5MD
target_include_directories(awpmd PUBLIC ${LAMMPS_LIB_SOURCE_DIR}/awpmd/systems/interact ${LAMMPS_LIB_SOURCE_DIR}/awpmd/ivutils/include)
elseif(PKG_LIB STREQUAL h5md)
target_include_directories(h5md PUBLIC ${LAMMPS_LIB_SOURCE_DIR}/h5md/include)
elseif(PKG_LIB STREQUAL colvars)
target_compile_options(colvars PRIVATE -DLEPTON)
target_include_directories(colvars PRIVATE ${LAMMPS_LIB_SOURCE_DIR}/colvars/lepton/include)
target_include_directories(colvars PUBLIC ${LAMMPS_LIB_SOURCE_DIR}/colvars)
else()
target_include_directories(${PKG_LIB} PUBLIC ${LAMMPS_LIB_SOURCE_DIR}/${PKG_LIB})
endif()
@ -480,6 +476,8 @@ if(ENABLE_KOKKOS)
${KOKKOS_PKG_SOURCES_DIR}/neigh_list_kokkos.cpp
${KOKKOS_PKG_SOURCES_DIR}/neigh_bond_kokkos.cpp
${KOKKOS_PKG_SOURCES_DIR}/fix_nh_kokkos.cpp
${KOKKOS_PKG_SOURCES_DIR}/nbin_kokkos.cpp
${KOKKOS_PKG_SOURCES_DIR}/npair_kokkos.cpp
${KOKKOS_PKG_SOURCES_DIR}/domain_kokkos.cpp
${KOKKOS_PKG_SOURCES_DIR}/modify_kokkos.cpp)
set_property(GLOBAL PROPERTY "KOKKOS_PKG_SOURCES" "${KOKKOS_PKG_SOURCES}")
@ -487,6 +485,17 @@ if(ENABLE_KOKKOS)
# detects styles which have KOKKOS version
RegisterStylesExt(${KOKKOS_PKG_SOURCES_DIR} kokkos KOKKOS_PKG_SOURCES)
# register kokkos-only styles
RegisterNBinStyle(${KOKKOS_PKG_SOURCES_DIR}/nbin_kokkos.h)
RegisterNPairStyle(${KOKKOS_PKG_SOURCES_DIR}/npair_kokkos.h)
if(ENABLE_USER-DPD)
get_property(KOKKOS_PKG_SOURCES GLOBAL PROPERTY KOKKOS_PKG_SOURCES)
list(APPEND KOKKOS_PKG_SOURCES ${KOKKOS_PKG_SOURCES_DIR}/npair_ssa_kokkos.cpp)
RegisterNPairStyle(${KOKKOS_PKG_SOURCES_DIR}/npair_ssa_kokkos.h)
set_property(GLOBAL PROPERTY "KOKKOS_PKG_SOURCES" "${KOKKOS_PKG_SOURCES}")
endif()
get_property(KOKKOS_PKG_SOURCES GLOBAL PROPERTY KOKKOS_PKG_SOURCES)
list(APPEND LIB_SOURCES ${KOKKOS_PKG_SOURCES})

View File

@ -11,6 +11,12 @@ function(FindStyleHeaders path style_class file_pattern headers)
set_property(GLOBAL PROPERTY ${headers} "${hlist}")
endfunction(FindStyleHeaders)
function(AddStyleHeader path headers)
get_property(hlist GLOBAL PROPERTY ${headers})
list(APPEND hlist ${path})
set_property(GLOBAL PROPERTY ${headers} "${hlist}")
endfunction(AddStyleHeader)
function(FindStyleHeadersExt path style_class extension headers sources)
get_property(hlist GLOBAL PROPERTY ${headers})
get_property(slist GLOBAL PROPERTY ${sources})
@ -62,6 +68,22 @@ function(GenerateStyleHeader path property style)
CreateStyleHeader("${path}" "style_${style}.h" ${files})
endfunction(GenerateStyleHeader)
function(RegisterNBinStyles search_path)
FindStyleHeaders(${search_path} NBIN_CLASS nbin_ NBIN ) # nbin ) # neighbor
endfunction(RegisterNBinStyles)
function(RegisterNPairStyles search_path)
FindStyleHeaders(${search_path} NPAIR_CLASS npair_ NPAIR ) # npair ) # neighbor
endfunction(RegisterNPairStyles)
function(RegisterNBinStyle path)
AddStyleHeader(${path} NBIN)
endfunction(RegisterNBinStyle)
function(RegisterNPairStyle path)
AddStyleHeader(${path} NPAIR)
endfunction(RegisterNPairStyle)
function(RegisterStyles search_path)
FindStyleHeaders(${search_path} ANGLE_CLASS angle_ ANGLE ) # angle ) # force
FindStyleHeaders(${search_path} ATOM_CLASS atom_vec_ ATOM_VEC ) # atom ) # atom atom_vec_hybrid

View File

@ -20,7 +20,8 @@ ifeq ($(shell which virtualenv >/dev/null 2>&1; echo $$?), 0)
HAS_VIRTUALENV = YES
endif
SOURCES=$(wildcard src/*.txt)
SPHINXEXTRA = -j $(shell $(PYTHON) -c 'import multiprocessing;print(multiprocessing.cpu_count())')
SOURCES=$(filter-out src/lammps_commands.txt src/lammps_tutorials.txt,$(wildcard src/*.txt))
OBJECTS=$(SOURCES:src/%.txt=$(RSTDIR)/%.rst)
.PHONY: help clean-all clean epub html pdf old venv spelling anchor_check
@ -55,7 +56,7 @@ html: $(OBJECTS) $(ANCHORCHECK)
@(\
. $(VENV)/bin/activate ;\
cp -r src/* $(RSTDIR)/ ;\
sphinx-build -j 8 -b html -c utils/sphinx-config -d $(BUILDDIR)/doctrees $(RSTDIR) html ;\
sphinx-build $(SPHINXEXTRA) -b html -c utils/sphinx-config -d $(BUILDDIR)/doctrees $(RSTDIR) html ;\
echo "############################################" ;\
doc_anchor_check src/*.txt ;\
echo "############################################" ;\
@ -91,7 +92,7 @@ epub: $(OBJECTS)
@(\
. $(VENV)/bin/activate ;\
cp -r src/* $(RSTDIR)/ ;\
sphinx-build -j 8 -b epub -c utils/sphinx-config -d $(BUILDDIR)/doctrees $(RSTDIR) epub ;\
sphinx-build $(SPHINXEXTRA) -b epub -c utils/sphinx-config -d $(BUILDDIR)/doctrees $(RSTDIR) epub ;\
deactivate ;\
)
@mv epub/LAMMPS.epub .
@ -159,7 +160,7 @@ $(VENV):
@( \
virtualenv -p $(PYTHON) $(VENV); \
. $(VENV)/bin/activate; \
pip install Sphinx==1.5.6; \
pip install Sphinx; \
pip install sphinxcontrib-images; \
deactivate;\
)

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@ -0,0 +1,9 @@
\documentclass[12pt]{article}
\begin{document}
\begin{eqnarray*}
E = A e^{-\kappa r} - \frac{C}{r^6} \cdot \frac{1}{1 + D r^{14}} \qquad r < r_c \\
\end{eqnarray*}
\end{document}

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14
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@ -0,0 +1,14 @@
\documentclass[12pt]{article}
\begin{document}
$$
E = -\varepsilon\, \ln{\left[1-\exp{\left(-r^{2}/\sigma^{2}\right)}\right]} \qquad r < r_c
$$
$$
\varepsilon = p\,k_B\,T
$$
\end{document}

View File

@ -1,9 +1,9 @@
<!-- HTML_ONLY -->
<HEAD>
<TITLE>LAMMPS Users Manual</TITLE>
<META NAME="docnumber" CONTENT="23 Oct 2017 version">
<META NAME="docnumber" CONTENT="22 Feb 2018 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.">
<META NAME="copyright" CONTENT="Copyright (2003) Sandia Corporation. This software and manual is distributed under the GNU General Public License.">
</HEAD>
<BODY>
@ -21,7 +21,7 @@
<H1></H1>
LAMMPS Documentation :c,h3
23 Oct 2017 version :c,h4
22 Feb 2018 version :c,h4
Version info: :h4
@ -176,11 +176,11 @@ END_RST -->
5.1 "Measuring performance"_acc_1 :ulb,b
5.2 "Algorithms and code options to boost performace"_acc_2 :b
5.3 "Accelerator packages with optimized styles"_acc_3 :b
5.3.1 "GPU package"_accelerate_gpu.html :ulb,b
5.3.1 "GPU package"_accelerate_gpu.html :b
5.3.2 "USER-INTEL package"_accelerate_intel.html :b
5.3.3 "KOKKOS package"_accelerate_kokkos.html :b
5.3.4 "USER-OMP package"_accelerate_omp.html :b
5.3.5 "OPT package"_accelerate_opt.html :ule,b
5.3.5 "OPT package"_accelerate_opt.html :b
5.4 "Comparison of various accelerator packages"_acc_4 :ule,b
"How-to discussions"_Section_howto.html :l
6.1 "Restarting a simulation"_howto_1 :ulb,b

View File

@ -619,8 +619,9 @@ USER-INTEL, k = KOKKOS, o = USER-OMP, t = OPT.
"pour"_fix_pour.html,
"press/berendsen"_fix_press_berendsen.html,
"print"_fix_print.html,
"property/atom"_fix_property_atom.html,
"python"_fix_python.html,
"property/atom (k)"_fix_property_atom.html,
"python/invoke"_fix_python_invoke.html,
"python/move"_fix_python_move.html,
"qeq/comb (o)"_fix_qeq_comb.html,
"qeq/dynamic"_fix_qeq.html,
"qeq/fire"_fix_qeq.html,
@ -637,10 +638,10 @@ USER-INTEL, k = KOKKOS, o = USER-OMP, t = OPT.
"rigid/nve (o)"_fix_rigid.html,
"rigid/nvt (o)"_fix_rigid.html,
"rigid/small (o)"_fix_rigid.html,
"rigid/small/nph (o)"_fix_rigid.html,
"rigid/small/npt (o)"_fix_rigid.html,
"rigid/small/nve (o)"_fix_rigid.html,
"rigid/small/nvt (o)"_fix_rigid.html,
"rigid/small/nph"_fix_rigid.html,
"rigid/small/npt"_fix_rigid.html,
"rigid/small/nve"_fix_rigid.html,
"rigid/small/nvt"_fix_rigid.html,
"setforce (k)"_fix_setforce.html,
"shake"_fix_shake.html,
"spring"_fix_spring.html,
@ -668,7 +669,7 @@ USER-INTEL, k = KOKKOS, o = USER-OMP, t = OPT.
"wall/harmonic"_fix_wall.html,
"wall/lj1043"_fix_wall.html,
"wall/lj126"_fix_wall.html,
"wall/lj93"_fix_wall.html,
"wall/lj93 (k)"_fix_wall.html,
"wall/piston"_fix_wall_piston.html,
"wall/reflect (k)"_fix_wall_reflect.html,
"wall/region"_fix_wall_region.html,
@ -683,14 +684,14 @@ package"_Section_start.html#start_3.
"atc"_fix_atc.html,
"ave/correlate/long"_fix_ave_correlate_long.html,
"colvars"_fix_colvars.html,
"dpd/energy"_fix_dpd_energy.html,
"dpd/energy (k)"_fix_dpd_energy.html,
"drude"_fix_drude.html,
"drude/transform/direct"_fix_drude_transform.html,
"drude/transform/reverse"_fix_drude_transform.html,
"edpd/source"_fix_dpd_source.html,
"eos/cv"_fix_eos_cv.html,
"eos/table"_fix_eos_table.html,
"eos/table/rx"_fix_eos_table_rx.html,
"eos/table/rx (k)"_fix_eos_table_rx.html,
"filter/corotate"_fix_filter_corotate.html,
"flow/gauss"_fix_flow_gauss.html,
"gle"_fix_gle.html,
@ -728,12 +729,12 @@ package"_Section_start.html#start_3.
"qeq/reax (ko)"_fix_qeq_reax.html,
"qmmm"_fix_qmmm.html,
"qtb"_fix_qtb.html,
"reax/c/bonds"_fix_reax_bonds.html,
"reax/c/species"_fix_reaxc_species.html,
"reax/c/bonds (k)"_fix_reax_bonds.html,
"reax/c/species (k)"_fix_reaxc_species.html,
"rhok"_fix_rhok.html,
"rx"_fix_rx.html,
"rx (k)"_fix_rx.html,
"saed/vtk"_fix_saed_vtk.html,
"shardlow"_fix_shardlow.html,
"shardlow (k)"_fix_shardlow.html,
"smd"_fix_smd.html,
"smd/adjust/dt"_fix_smd_adjust_dt.html,
"smd/integrate/tlsph"_fix_smd_integrate_tlsph.html,
@ -906,7 +907,7 @@ KOKKOS, o = USER-OMP, t = OPT.
"none"_pair_none.html,
"zero"_pair_zero.html,
"hybrid"_pair_hybrid.html,
"hybrid/overlay"_pair_hybrid.html,
"hybrid/overlay (k)"_pair_hybrid.html,
"adp (o)"_pair_adp.html,
"airebo (oi)"_pair_airebo.html,
"airebo/morse (oi)"_pair_airebo.html,
@ -977,6 +978,7 @@ KOKKOS, o = USER-OMP, t = OPT.
"lj/cut/coul/long (gikot)"_pair_lj.html,
"lj/cut/coul/long/cs"_pair_lj.html,
"lj/cut/coul/msm (go)"_pair_lj.html,
"lj/cut/coul/wolf (o)"_pair_lj.html,
"lj/cut/dipole/cut (go)"_pair_dipole.html,
"lj/cut/dipole/long"_pair_dipole.html,
"lj/cut/tip4p/cut (o)"_pair_lj.html,
@ -1010,7 +1012,7 @@ KOKKOS, o = USER-OMP, t = OPT.
"reax"_pair_reax.html,
"rebo (oi)"_pair_airebo.html,
"resquared (go)"_pair_resquared.html,
"snap"_pair_snap.html,
"snap (k)"_pair_snap.html,
"soft (go)"_pair_soft.html,
"sw (giko)"_pair_sw.html,
"table (gko)"_pair_table.html,
@ -1021,11 +1023,12 @@ KOKKOS, o = USER-OMP, t = OPT.
"tip4p/cut (o)"_pair_coul.html,
"tip4p/long (o)"_pair_coul.html,
"tri/lj"_pair_tri_lj.html,
"ufm (got)"_pair_ufm.html,
"vashishta (ko)"_pair_vashishta.html,
"vashishta/table (o)"_pair_vashishta.html,
"yukawa (go)"_pair_yukawa.html,
"yukawa (gok)"_pair_yukawa.html,
"yukawa/colloid (go)"_pair_yukawa_colloid.html,
"zbl (go)"_pair_zbl.html :tb(c=4,ea=c)
"zbl (gok)"_pair_zbl.html :tb(c=4,ea=c)
These are additional pair styles in USER packages, which can be used
if "LAMMPS is built with the appropriate
@ -1038,13 +1041,14 @@ package"_Section_start.html#start_3.
"coul/diel (o)"_pair_coul_diel.html,
"coul/long/soft (o)"_pair_lj_soft.html,
"dpd/fdt"_pair_dpd_fdt.html,
"dpd/fdt/energy"_pair_dpd_fdt.html,
"dpd/fdt/energy (k)"_pair_dpd_fdt.html,
"eam/cd (o)"_pair_eam.html,
"edip (o)"_pair_edip.html,
"edip/multi"_pair_edip.html,
"edpd"_pair_meso.html,
"eff/cut"_pair_eff.html,
"exp6/rx"_pair_exp6_rx.html,
"exp6/rx (k)"_pair_exp6_rx.html,
"extep"_pair_extep.html,
"gauss/cut"_pair_gauss.html,
"kolmogorov/crespi/z"_pair_kolmogorov_crespi_z.html,
"lennard/mdf"_pair_mdf.html,
@ -1070,7 +1074,7 @@ package"_Section_start.html#start_3.
"morse/smooth/linear"_pair_morse.html,
"morse/soft"_pair_morse.html,
"multi/lucy"_pair_multi_lucy.html,
"multi/lucy/rx"_pair_multi_lucy_rx.html,
"multi/lucy/rx (k)"_pair_multi_lucy_rx.html,
"oxdna/coaxstk"_pair_oxdna.html,
"oxdna/excv"_pair_oxdna.html,
"oxdna/hbond"_pair_oxdna.html,
@ -1087,6 +1091,7 @@ package"_Section_start.html#start_3.
"smd/triangulated/surface"_pair_smd_triangulated_surface.html,
"smd/ulsph"_pair_smd_ulsph.html,
"smtbq"_pair_smtbq.html,
"snap (k)"_pair_snap.html,
"sph/heatconduction"_pair_sph_heatconduction.html,
"sph/idealgas"_pair_sph_idealgas.html,
"sph/lj"_pair_sph_lj.html,
@ -1094,7 +1099,7 @@ package"_Section_start.html#start_3.
"sph/taitwater"_pair_sph_taitwater.html,
"sph/taitwater/morris"_pair_sph_taitwater_morris.html,
"srp"_pair_srp.html,
"table/rx"_pair_table_rx.html,
"table/rx (k)"_pair_table_rx.html,
"tdpd"_pair_meso.html,
"tersoff/table (o)"_pair_tersoff.html,
"thole"_pair_thole.html,
@ -1249,7 +1254,7 @@ USER-OMP, t = OPT.
"ewald/disp"_kspace_style.html,
"msm (o)"_kspace_style.html,
"msm/cg (o)"_kspace_style.html,
"pppm (go)"_kspace_style.html,
"pppm (gok)"_kspace_style.html,
"pppm/cg (o)"_kspace_style.html,
"pppm/disp (i)"_kspace_style.html,
"pppm/disp/tip4p"_kspace_style.html,

View File

@ -454,7 +454,7 @@ NOTE: By default, for 2d systems, granular particles are still modeled
as 3d spheres, not 2d discs (circles), meaning their moment of inertia
will be the same as in 3d. If you wish to model granular particles in
2d as 2d discs, see the note on this topic in "Section
6.2"_Section_howto.html#howto_2, where 2d simulations are disussed.
6.2"_Section_howto.html#howto_2, where 2d simulations are discussed.
:line

View File

@ -507,11 +507,15 @@ we'll be pleased to add them to the
"Movies"_http://lammps.sandia.gov/movies.html pages of the LAMMPS WWW
site.
The core group of LAMMPS developers is at Sandia National Labs:
The primary LAMMPS developers are at Sandia National Labs and Temple University:
Steve Plimpton, sjplimp at sandia.gov
Aidan Thompson, athomps at sandia.gov
Paul Crozier, pscrozi at sandia.gov :ul
Stan Moore, stamoor at sandia.gov
Axel Kohlmeyer, akohlmey at gmail.com :ul
Past primary developers include Paul Crozier and Mark Stevens,
both at Sandia, and Ray Shan, now at Materials Design.
The following folks are responsible for significant contributions to
the code, or other aspects of the LAMMPS development effort. Many of
@ -519,19 +523,20 @@ the packages they have written are somewhat unique to LAMMPS and the
code would not be as general-purpose as it is without their expertise
and efforts.
Axel Kohlmeyer (Temple U), akohlmey at gmail.com, SVN and Git repositories, indefatigable mail list responder, USER-CGSDK and USER-OMP packages
Axel Kohlmeyer (Temple U), akohlmey at gmail.com, SVN and Git repositories, indefatigable mail list responder, USER-CGSDK, USER-OMP, USER-COLVARS, USER-MOLFILE, USER-QMMM, USER-TALLY, and COMPRESS packages
Roy Pollock (LLNL), Ewald and PPPM solvers
Mike Brown (ORNL), brownw at ornl.gov, GPU package
Mike Brown (ORNL), brownw at ornl.gov, GPU and USER-INTEL package
Greg Wagner (Sandia), gjwagne at sandia.gov, MEAM package for MEAM potential
Mike Parks (Sandia), mlparks at sandia.gov, PERI package for Peridynamics
Rudra Mukherjee (JPL), Rudranarayan.M.Mukherjee at jpl.nasa.gov, POEMS package for articulated rigid body motion
Reese Jones (Sandia) and collaborators, rjones at sandia.gov, USER-ATC package for atom/continuum coupling
Ilya Valuev (JIHT), valuev at physik.hu-berlin.de, USER-AWPMD package for wave-packet MD
Christian Trott (U Tech Ilmenau), christian.trott at tu-ilmenau.de, USER-CUDA package
Christian Trott (U Tech Ilmenau), christian.trott at tu-ilmenau.de, USER-CUDA and KOKKOS packages
Andres Jaramillo-Botero (Caltech), ajaramil at wag.caltech.edu, USER-EFF package for electron force field
Christoph Kloss (JKU), Christoph.Kloss at jku.at, USER-LIGGGHTS package for granular models and granular/fluid coupling
Metin Aktulga (LBL), hmaktulga at lbl.gov, USER-REAXC package for C version of ReaxFF
Georg Gunzenmuller (EMI), georg.ganzenmueller at emi.fhg.de, USER-SPH package :ul
Georg Gunzenmuller (EMI), georg.ganzenmueller at emi.fhg.de, USER-SMD and USER-SPH packages
Colin Denniston (U Western Ontario), cdennist at uwo.ca, USER-LB package :ul
As discussed in "Section 13"_Section_history.html, LAMMPS
originated as a cooperative project between DOE labs and industrial

View File

@ -138,6 +138,7 @@ Package, Description, Doc page, Example, Library
"USER-MESO"_#USER-MESO, mesoscale DPD models, "pair_style edpd"_pair_meso.html, USER/meso, -
"USER-MGPT"_#USER-MGPT, fast MGPT multi-ion potentials, "pair_style mgpt"_pair_mgpt.html, USER/mgpt, -
"USER-MISC"_#USER-MISC, single-file contributions, USER-MISC/README, USER/misc, -
"USER-MOFFF"_#USER-MOFFF, styles for "MOF-FF"_MOFplus force field, "pair_style buck6d/coul/gauss"_pair_buck6d_coul_gauss.html, USER/mofff, -
"USER-MOLFILE"_#USER-MOLFILE, "VMD"_vmd_home molfile plug-ins,"dump molfile"_dump_molfile.html, -, ext
"USER-NETCDF"_#USER-NETCDF, dump output via NetCDF,"dump netcdf"_dump_netcdf.html, -, ext
"USER-OMP"_#USER-OMP, OpenMP-enabled styles,"Section 5.3.4"_accelerate_omp.html, "Benchmarks"_http://lammps.sandia.gov/bench.html, -
@ -243,7 +244,7 @@ COLLOID package :link(COLLOID),h4
[Contents:]
Coarse-grained finite-size colloidal particles. Pair stayle and fix
Coarse-grained finite-size colloidal particles. Pair styles and fix
wall styles for colloidal interactions. Includes the Fast Lubrication
Dynamics (FLD) method for hydrodynamic interactions, which is a
simplified approximation to Stokesian dynamics.
@ -732,9 +733,9 @@ make lib-latte args="-b -m gfortran" # download and build in lib/latte and
:pre
Note that 3 symbolic (soft) links, "includelink" and "liblink" and
"filelink", are created in lib/latte to point into the LATTE home dir.
"filelink.o", are created in lib/latte to point into the LATTE home dir.
When LAMMPS builds in src it will use these links. You should
also check that the Makefile.lammps file you create is apporpriate
also check that the Makefile.lammps file you create is appropriate
for the compiler you use on your system to build LATTE.
You can then install/un-install the package and build LAMMPS in the
@ -984,7 +985,7 @@ MSCG package :link(mscg),h4
[Contents:]
A "fix mscg"_fix_mscg.html command which can parameterize a
Mulit-Scale Coarse-Graining (MSCG) model using the open-source "MS-CG
Multi-Scale Coarse-Graining (MSCG) model using the open-source "MS-CG
library"_mscg_home.
:link(mscg_home,https://github.com/uchicago-voth/MSCG-release)
@ -1781,7 +1782,7 @@ coarse-grained DPD-based models for energetic, reactive molecular
crystalline materials. It includes many pair styles specific to these
systems, including for reactive DPD, where each particle has internal
state for multiple species and a coupled set of chemical reaction ODEs
are integrated each timestep. Highly accurate time intergrators for
are integrated each timestep. Highly accurate time integrators for
isothermal, isoenergetic, isobaric and isenthalpic conditions are
included. These enable long timesteps via the Shardlow splitting
algorithm.
@ -2231,7 +2232,7 @@ Several extensions of the the dissipative particle dynamics (DPD)
method. Specifically, energy-conserving DPD (eDPD) that can model
non-isothermal processes, many-body DPD (mDPD) for simulating
vapor-liquid coexistence, and transport DPD (tDPD) for modeling
advection-diffuion-reaction systems. The equations of motion of these
advection-diffusion-reaction systems. The equations of motion of these
DPD extensions are integrated through a modified velocity-Verlet (MVV)
algorithm.
@ -2259,6 +2260,44 @@ http://lammps.sandia.gov/movies.html#mesodpd :ul
:line
USER-MOFFF package :link(USER-MOFFF),h4
[Contents:]
Pair, angle and improper styles needed to employ the MOF-FF
force field by Schmid and coworkers with LAMMPS.
MOF-FF is a first principles derived force field with the primary aim
to simulate MOFs and related porous framework materials, using spherical
Gaussian charges. It is described in S. Bureekaew et al., Phys. Stat. Sol. B
2013, 250, 1128-1141.
For the usage of MOF-FF see the example in the example directory as
well as the "MOF+"_MOFplus website.
:link(MOFplus,https://www.mofplus.org/content/show/MOF-FF)
[Author:] Hendrik Heenen (Technical U of Munich),
Rochus Schmid (Ruhr-University Bochum).
[Install or un-install:]
make yes-user-mofff
make machine :pre
make no-user-mofff
make machine :pre
[Supporting info:]
src/USER-MOFFF: filenames -> commands
src/USER-MOFFF/README
"pair_style buck6d/coul/gauss"_pair_buck6d_coul_gauss.html
"angle_style class2"_angle_class2.html
"angle_style cosine/buck6d"_angle_cosine_buck6d.html
"improper_style inversion/harmonic"_improper_inversion_harmonic.html
examples/USER/mofff :ul
:line
USER-MOLFILE package :link(USER-MOLFILE),h4
[Contents:]
@ -2495,7 +2534,7 @@ make machine :pre
NOTE: The LAMMPS executable these steps produce is not yet functional
for a QM/MM simulation. You must also build Quantum ESPRESSO and
create a new executable which links LAMMPS and Quanutm ESPRESSO
create a new executable which links LAMMPS and Quantum ESPRESSO
together. These are steps 3 and 4 described in the lib/qmmm/README
file.
@ -2554,7 +2593,7 @@ developed by the Cambridge University group.
:link(quip,https://github.com/libAtoms/QUIP)
To use this package you must have the QUIP libAatoms library available
To use this package you must have the QUIP libAtoms library available
on your system.
[Author:] Albert Bartok (Cambridge University)
@ -2809,7 +2848,7 @@ USER-VTK package :link(USER-VTK),h4
A "dump vtk"_dump_vtk.html command which outputs snapshot info in the
"VTK format"_vtk, enabling visualization by "Paraview"_paraview or
other visuzlization packages.
other visualization packages.
:link(vtk,http://www.vtk.org)
:link(paraview,http://www.paraview.org)

View File

@ -123,7 +123,7 @@ code directly from an input script:
"python"_python.html
"variable python"_variable.html
"fix python"_fix_python.html
"fix python/invoke"_fix_python_invoke.html
"pair_style python"_pair_python.html :ul
The "python"_python.html command which can be used to define and
@ -165,7 +165,7 @@ doc page for its python-style variables for more info, including
examples of Python code you can write for both pure Python operations
and callbacks to LAMMPS.
The "fix python"_fix_python.html command can execute
The "fix python/invoke"_fix_python_invoke.html command can execute
Python code at selected timesteps during a simulation run.
The "pair_style python"_pair_python command allows you to define

View File

@ -79,7 +79,7 @@ This section has the following sub-sections:
Read this first :h5,link(start_2_1)
If you want to avoid building LAMMPS yourself, read the preceeding
If you want to avoid building LAMMPS yourself, read the preceding
section about options available for downloading and installing
executables. Details are discussed on the "download"_download page.
@ -252,14 +252,13 @@ re-compile, after typing "make clean" (which will describe different
clean options).
The LMP_INC variable is used to include options that turn on ifdefs
within the LAMMPS code. The options that are currently recogized are:
within the LAMMPS code. The options that are currently recognized are:
-DLAMMPS_GZIP
-DLAMMPS_JPEG
-DLAMMPS_PNG
-DLAMMPS_FFMPEG
-DLAMMPS_MEMALIGN
-DLAMMPS_XDR
-DLAMMPS_SMALLBIG
-DLAMMPS_BIGBIG
-DLAMMPS_SMALLSMALL
@ -308,11 +307,6 @@ has to be aligned on larger than default byte boundaries (e.g. 16
bytes instead of 8 bytes on x86 type platforms) for optimal
performance.
If you use -DLAMMPS_XDR, the build will include XDR compatibility
files for doing particle dumps in XTC format. This is only necessary
if your platform does have its own XDR files available. See the
Restrictions section of the "dump"_dump.html command for details.
Use at most one of the -DLAMMPS_SMALLBIG, -DLAMMPS_BIGBIG,
-DLAMMPS_SMALLSMALL settings. The default is -DLAMMPS_SMALLBIG. These
settings refer to use of 4-byte (small) vs 8-byte (big) integers
@ -363,7 +357,7 @@ installed on your platform. If MPI is installed on your system in the
usual place (under /usr/local), you also may not need to specify these
3 variables, assuming /usr/local is in your path. On some large
parallel machines which use "modules" for their compile/link
environements, you may simply need to include the correct module in
environments, you may simply need to include the correct module in
your build environment, before building LAMMPS. Or the parallel
machine may have a vendor-provided MPI which the compiler has no
trouble finding.
@ -431,7 +425,7 @@ use the KISS library described above.
You may also need to set the FFT_INC, FFT_PATH, and FFT_LIB variables,
so the compiler and linker can find the needed FFT header and library
files. Note that on some large parallel machines which use "modules"
for their compile/link environements, you may simply need to include
for their compile/link environments, you may simply need to include
the correct module in your build environment. Or the parallel machine
may have a vendor-provided FFT library which the compiler has no
trouble finding. See the src/MAKE/OPTIONS/Makefile.fftw file for an
@ -470,7 +464,7 @@ precision.
The FFT_INC variable also allows for a -DFFT_SINGLE setting that will
use single-precision FFTs with PPPM, which can speed-up long-range
calulations, particularly in parallel or on GPUs. Fourier transform
calculations, particularly in parallel or on GPUs. Fourier transform
and related PPPM operations are somewhat insensitive to floating point
truncation errors and thus do not always need to be performed in
double precision. Using the -DFFT_SINGLE setting trades off a little
@ -483,7 +477,7 @@ with support for single-precision, as explained above. For FFTW3 you
also need to include -lfftw3f with the FFT_LIB setting, in addition to
-lfftw3. For FFTW2, you also need to specify -DFFT_SIZE with the
FFT_INC setting and -lsfftw with the FFT_LIB setting (in place of
-lfftw). Similarly, if FFTW2 has been preinstalled with an explicit
-lfftw). Similarly, if FFTW2 has been pre-installed with an explicit
double-precision library (libdfftw.a and not the default libfftw.a),
then you can specify -DFFT_SIZE (and not -DFFT_SINGLE), and specify
-ldfftw to use double-precision FFTs.
@ -714,7 +708,7 @@ list various make commands that can be used to manage packages.
If you use a command in a LAMMPS input script that is part of a
package, you must have built LAMMPS with that package, else you will
get an error that the style is invalid or the command is unknown.
Every command's doc page specfies if it is part of a package. You can
Every command's doc page specifies if it is part of a package. You can
type
lmp_machine -h :pre
@ -859,7 +853,7 @@ details for each package.
[External libraries:]
Packages in the tables "Section 4"_Section_packages.html with an "ext"
in the last column link to exernal libraries whose source code is not
in the last column link to external libraries whose source code is not
included with LAMMPS. You must first download and install the library
before building LAMMPS with that package installed. E.g. the voronoi
package links to the freely available "Voro++ library"_voro_home2. You
@ -963,7 +957,7 @@ src/MAKE/Makefile.foo and perform the build in the directory
Obj_shared_foo. This is so that each file can be compiled with the
-fPIC flag which is required for inclusion in a shared library. The
build will create the file liblammps_foo.so which another application
can link to dyamically. It will also create a soft link liblammps.so,
can link to dynamically. It will also create a soft link liblammps.so,
which will point to the most recently built shared library. This is
the file the Python wrapper loads by default.
@ -1329,8 +1323,8 @@ LAMMPS is compiled with CUDA=yes.
numa Nm :pre
This option is only relevant when using pthreads with hwloc support.
In this case Nm defines the number of NUMA regions (typicaly sockets)
on a node which will be utilizied by a single MPI rank. By default Nm
In this case Nm defines the number of NUMA regions (typically sockets)
on a node which will be utilized by a single MPI rank. By default Nm
= 1. If this option is used the total number of worker-threads per
MPI rank is threads*numa. Currently it is always almost better to
assign at least one MPI rank per NUMA region, and leave numa set to
@ -1394,7 +1388,7 @@ replica runs on on one or a few processors. Note that with MPI
installed on a machine (e.g. your desktop), you can run on more
(virtual) processors than you have physical processors.
To run multiple independent simulatoins from one input script, using
To run multiple independent simulations from one input script, using
multiple partitions, see "Section 6.4"_Section_howto.html#howto_4
of the manual. World- and universe-style "variables"_variable.html
are useful in this context.
@ -1673,7 +1667,7 @@ The first section provides a global loop timing summary. The {loop time}
is the total wall time for the section. The {Performance} line is
provided for convenience to help predicting the number of loop
continuations required and for comparing performance with other,
similar MD codes. The {CPU use} line provides the CPU utilzation per
similar MD codes. The {CPU use} line provides the CPU utilization per
MPI task; it should be close to 100% times the number of OpenMP
threads (or 1 of no OpenMP). Lower numbers correspond to delays due
to file I/O or insufficient thread utilization.

View File

@ -48,6 +48,7 @@ own sub-directories with their own Makefiles and/or README files.
"chain"_#chain
"colvars"_#colvars
"createatoms"_#createatoms
"doxygen"_#doxygen
"drude"_#drude
"eam database"_#eamdb
"eam generate"_#eamgn
@ -110,14 +111,21 @@ back-and-forth between the CHARMM MD code and LAMMPS.
They are intended to make it easy to use CHARMM as a builder and as a
post-processor for LAMMPS. Using charmm2lammps.pl, you can convert a
PDB file with associated CHARMM info, including CHARMM force field
data, into its LAMMPS equivalent. Using lammps2pdb.pl you can convert
LAMMPS atom dumps into PDB files.
data, into its LAMMPS equivalent. Support for the CMAP correction of
CHARMM22 and later is available as an option. This tool can also add
solvent water molecules and Na+ or Cl- ions to the system.
Using lammps2pdb.pl you can convert LAMMPS atom dumps into PDB files.
See the README file in the ch2lmp sub-directory for more information.
These tools were created by Pieter in't Veld (pjintve at sandia.gov)
and Paul Crozier (pscrozi at sandia.gov) at Sandia.
CMAP support added and tested by Xiaohu Hu (hux2 at ornl.gov) and
Robert A. Latour (latourr at clemson.edu), David Hyde-Volpe, and
Tigran Abramyan, (Clemson University) and
Chris Lorenz (chris.lorenz at kcl.ac.uk), King's College London.
:line
chain tool :h4,link(chain)
@ -172,6 +180,18 @@ The tool is authored by Xiaowang Zhou (Sandia), xzhou at sandia.gov.
:line
doxygen tool :h4,link(doxygen)
The tools/doxygen directory contains a shell script called
doxygen.sh which can generate a call graph and API lists using
the "Doxygen software"_http://doxygen.org.
See the included README file for details.
The tool is authored by Nandor Tamaskovics, numericalfreedom at googlemail.com.
:line
drude tool :h4,link(drude)
The tools/drude directory contains a Python script called

View File

@ -7,24 +7,22 @@
<link href="doxygen.css" rel="stylesheet" type="text/css"/>
</head>
<body>
<center>
<a href="http://lammps.sandia.gov">LAMMPS Website</a> &nbsp; &nbsp;
<a href="../../Manual.html">LAMMPS Manual</a> &nbsp; &nbsp;
<a href="../../fix_atc.html">USER-AtC Manual</a> &nbsp; &nbsp;
<a href="../../Section_commands.html#comm">Commands</a>
</center>
<hr>
<!-- Generated by Doxygen 1.6.1 -->
<div class="navigation" id="top">
<div class="tabs">
<ul>
<li><a href="index.html"><span>Main&nbsp;Page</span></a></li>
<li class="current"><a href="pages.html"><span>Related&nbsp;Pages</span></a></li>
<li><a href="namespaces.html"><span>Namespaces</span></a></li>
<li><a href="annotated.html"><span>Classes</span></a></li>
<li><a href="files.html"><span>Files</span></a></li>
<li><a href="dirs.html"><span>Directories</span></a></li>
</ul>
</div>
</div>
<div class="contents">
<h1><a class="anchor" id="man_add_molecule">fix_modify AtC add_molecule </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_add_molecule">fix_modify AtC add_molecule </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify_AtC add_molecule &lt;small|large&gt; &lt;TAG&gt; &lt;GROUP_NAME&gt; <br/>
</p>
<ul>
@ -35,21 +33,21 @@ syntax</a></h2>
<li>&lt;GROUP_NAME&gt; = name of group that tracking will be applied to <br/>
</li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> group WATERGROUP type 1 2 </code> <br/>
<code> fix_modify AtC add_molecule small water WATERGROUP </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Associates a tag with all molecules corresponding to a specified group. <br/>
</p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<h4><a class="anchor" id="related">
related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
<p>No defaults for this command. </p>
</div>
<hr size="1"/><address style="text-align: right;"><small>Generated on 21 Aug 2013 for ATC by&nbsp;

View File

@ -7,24 +7,22 @@
<link href="doxygen.css" rel="stylesheet" type="text/css"/>
</head>
<body>
<center>
<a href="http://lammps.sandia.gov">LAMMPS Website</a> &nbsp; &nbsp;
<a href="../../Manual.html">LAMMPS Manual</a> &nbsp; &nbsp;
<a href="../../fix_atc.html">USER-AtC Manual</a> &nbsp; &nbsp;
<a href="../../Section_commands.html#comm">Commands</a>
</center>
<hr>
<!-- Generated by Doxygen 1.6.1 -->
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<div class="tabs">
<ul>
<li><a href="index.html"><span>Main&nbsp;Page</span></a></li>
<li class="current"><a href="pages.html"><span>Related&nbsp;Pages</span></a></li>
<li><a href="namespaces.html"><span>Namespaces</span></a></li>
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<li><a href="dirs.html"><span>Directories</span></a></li>
</ul>
</div>
</div>
<div class="contents">
<h1><a class="anchor" id="man_add_species">fix_modify AtC add_species </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_add_species">fix_modify AtC add_species </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify_AtC add_species &lt;TAG&gt; &lt;group|type&gt; &lt;ID&gt; <br/>
</p>
<ul>
@ -35,21 +33,21 @@ syntax</a></h2>
<li>&lt;ID&gt; = name of group or type number <br/>
</li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC add_species gold type 1 </code> <br/>
<code> group GOLDGROUP type 1 </code> <br/>
<code> fix_modify AtC add_species gold group GOLDGROUP </code> </p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Associates a tag with all atoms of a specified type or within a specified group. <br/>
</p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<h4><a class="anchor" id="related">
related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
<p>No defaults for this command. </p>
</div>
<hr size="1"/><address style="text-align: right;"><small>Generated on 21 Aug 2013 for ATC by&nbsp;

View File

@ -7,42 +7,40 @@
<link href="doxygen.css" rel="stylesheet" type="text/css"/>
</head>
<body>
<center>
<a href="http://lammps.sandia.gov">LAMMPS Website</a> &nbsp; &nbsp;
<a href="../../Manual.html">LAMMPS Manual</a> &nbsp; &nbsp;
<a href="../../fix_atc.html">USER-AtC Manual</a> &nbsp; &nbsp;
<a href="../../Section_commands.html#comm">Commands</a>
</center>
<hr>
<!-- Generated by Doxygen 1.6.1 -->
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<div class="tabs">
<ul>
<li><a href="index.html"><span>Main&nbsp;Page</span></a></li>
<li class="current"><a href="pages.html"><span>Related&nbsp;Pages</span></a></li>
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</ul>
</div>
</div>
<div class="contents">
<h1><a class="anchor" id="man_atom_element_map">fix_modify AtC atom_element_map </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_atom_element_map">fix_modify AtC atom_element_map </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC atom_element_map &lt;eulerian|lagrangian&gt; &lt;frequency&gt; <br/>
</p>
<ul>
<li>frequency (int) : frequency of updating atom-to-continuum maps based on the current configuration - only for eulerian </li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify atc atom_element_map eulerian 100 </code> </p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Changes frame of reference from eulerian to lagrangian and sets the frequency for which the map from atoms to elements is reformed and all the attendant data is recalculated. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>Cannot change map type after initialization. </p>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="related">
related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
<p>lagrangian </p>
</div>
<hr size="1"/><address style="text-align: right;"><small>Generated on 21 Aug 2013 for ATC by&nbsp;

View File

@ -7,24 +7,22 @@
<link href="doxygen.css" rel="stylesheet" type="text/css"/>
</head>
<body>
<center>
<a href="http://lammps.sandia.gov">LAMMPS Website</a> &nbsp; &nbsp;
<a href="../../Manual.html">LAMMPS Manual</a> &nbsp; &nbsp;
<a href="../../fix_atc.html">USER-AtC Manual</a> &nbsp; &nbsp;
<a href="../../Section_commands.html#comm">Commands</a>
</center>
<hr>
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<li><a href="index.html"><span>Main&nbsp;Page</span></a></li>
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</div>
<div class="contents">
<h1><a class="anchor" id="man_atom_weight">fix_modify AtC atom_weight </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_atom_weight">fix_modify AtC atom_weight </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC atom_weight &lt;method&gt; &lt;arguments&gt;</p>
<ul>
<li>&lt;method&gt; = <br/>
@ -36,22 +34,22 @@ syntax</a></h2>
read_in: list of values for atoms are read-in from specified file <br/>
</li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify atc atom_weight constant myatoms 11.8 </code> <br/>
<code> fix_modify atc atom_weight lattice </code> <br/>
<code> fix_modify atc atom_weight read-in atm_wt_file.txt </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Command for assigning the value of atomic weights used for atomic integration in atom-continuum coupled simulations. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>Use of lattice option requires a lattice type and parameter is already specified. </p>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="related">
related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
<p>lattice </p>
</div>
<hr size="1"/><address style="text-align: right;"><small>Generated on 21 Aug 2013 for ATC by&nbsp;

View File

@ -7,41 +7,39 @@
<link href="doxygen.css" rel="stylesheet" type="text/css"/>
</head>
<body>
<center>
<a href="http://lammps.sandia.gov">LAMMPS Website</a> &nbsp; &nbsp;
<a href="../../Manual.html">LAMMPS Manual</a> &nbsp; &nbsp;
<a href="../../fix_atc.html">USER-AtC Manual</a> &nbsp; &nbsp;
<a href="../../Section_commands.html#comm">Commands</a>
</center>
<hr>
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<div class="contents">
<h1><a class="anchor" id="man_atomic_charge">fix_modify AtC atomic_charge </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_atomic_charge">fix_modify AtC atomic_charge </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC &lt;include | omit&gt; atomic_charge</p>
<ul>
<li>&lt;include | omit&gt; = switch to activiate/deactiviate inclusion of intrinsic atomic charge in <a class="el" href="namespaceATC.html" title="owned field/s: MASS_DENSITY">ATC</a> </li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify atc compute include atomic_charge </code> </p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Determines whether AtC tracks the total charge as a finite element field </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>Required for: electrostatics </p>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="related">
related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
<p>if the atom charge is defined, default is on, otherwise default is off </p>
</div>
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<div class="contents">
<h1><a class="anchor" id="man_boundary">fix_modify AtC boundary </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_boundary">fix_modify AtC boundary </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC boundary type &lt;atom-type-id&gt;</p>
<ul>
<li>&lt;atom-type-id&gt; = type id for atoms that represent a ficticious boundary internal to the FE mesh </li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC boundary type ghost_atoms </code> </p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Command to define the atoms that represent the ficticious boundary internal to the FE mesh. For fully overlapped MD/FE domains with periodic boundary conditions no boundary atoms should be defined. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
<p>none </p>
</div>
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<h1><a class="anchor" id="man_boundary_dynamics">fix_modify AtC boundary_dynamics </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_boundary_dynamics">fix_modify AtC boundary_dynamics </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC boundary_dynamics &lt; on | damped_harmonic | prescribed | coupled | none &gt; [args] <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Sets different schemes for controlling boundary atoms. On will integrate the boundary atoms using the velocity-verlet algorithm. Damped harmonic uses a mass/spring/dashpot for the boundary atoms with added arguments of the damping and spring constants followed by the ratio of the boundary type mass to the desired mass. Prescribed forces the boundary atoms to follow the finite element displacement. Coupled does the same. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>Boundary atoms must be specified. When using swaps between internal and boundary atoms, the initial configuration must have already correctly partitioned the two. </p>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="related">
related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
<p>prescribed on </p>
</div>
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<h1><a class="anchor" id="man_boundary_faceset">fix_modify AtC boundary_faceset </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_boundary_faceset">fix_modify AtC boundary_faceset </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC boundary_faceset &lt;is | add&gt; [args] </p>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p>fix_modify AtC boundary_faceset is obndy </p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>This command species the faceset name when using a faceset to compute the MD/FE boundary fluxes. The faceset must already exist. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>This is only valid when fe_md_boundary is set to faceset. </p>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="related">
related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
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<h1><a class="anchor" id="man_boundary_integral">fix_modify AtC output boundary_integral </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_boundary_integral">fix_modify AtC output boundary_integral </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC output boundary_integral [field] faceset [name]</p>
<ul>
<li>field (string) : name of hardy field</li>
<li>name (string) : name of faceset </li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC output boundary_integral stress faceset loop1 </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Calculates a surface integral of the given field dotted with the outward normal of the faces and puts output in the "GLOBALS" file </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<p>Must be used with the hardy/field type of AtC fix ( see <a class="el" href="man_fix_atc.html">fix atc command</a> ) </p>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>Must be used with the hardy/field type of AtC fix ( see <a class="el" href="../../fix_atc.html">fix atc command</a> ) </p>
<h4><a class="anchor" id="related">
related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
<p>none </p>
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<h1><a class="anchor" id="man_consistent_fe_initialization">fix_modify AtC consistent_fe_initialization </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_consistent_fe_initialization">fix_modify AtC consistent_fe_initialization </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC consistent_fe_initialization &lt;on | off&gt;</p>
<ul>
<li>&lt;on|off&gt; = switch to activiate/deactiviate the initial setting of FE intrinsic field to match the projected MD field </li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify atc consistent_fe_initialization on </code> </p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Determines whether AtC initializes FE intrinsic fields (e.g., temperature) to match the projected MD values. This is particularly useful for fully overlapping simulations. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>Can be used with: thermal, two_temperature. Cannot be used with time filtering on. Does not include boundary nodes. </p>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="related">
related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
<p>Default is off </p>
</div>
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<h1><a class="anchor" id="man_contour_integral">fix_modify AtC output contour_integral </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_contour_integral">fix_modify AtC output contour_integral </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC output contour_integral [field] faceset [name] &lt;axis [x | y | z ]&gt;</p>
<ul>
<li>field (string) : name of hardy field</li>
<li>name (string) : name of faceset</li>
<li>axis (string) : x or y or z </li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC output contour_integral stress faceset loop1 </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Calculates a surface integral of the given field dotted with the outward normal of the faces and puts output in the "GLOBALS" file </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<p>Must be used with the hardy/field type of AtC fix ( see <a class="el" href="man_fix_atc.html">fix atc command</a> ) </p>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>Must be used with the hardy/field type of AtC fix ( see <a class="el" href="../../fix_atc.html">fix atc command</a> ) </p>
<h4><a class="anchor" id="related">
related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
<p>none </p>
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<h1><a class="anchor" id="man_control">fix_modify AtC control </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_control">fix_modify AtC control </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC control &lt;physics_type&gt; &lt;solution_parameter&gt; </p>
<p><br/>
</p>
@ -46,22 +44,22 @@ syntax</a></h2>
<li>tolerance (float) = relative tolerance to which matrix equations will be solved<br/>
</li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC control thermal max_iterations 10 </code> <br/>
<code> fix_modify AtC control momentum tolerance 1.e-5 </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Sets the numerical parameters for the matrix solvers used in the specified control algorithm. Many solution approaches require iterative solvers, and these methods enable users to provide the maximum number of iterations and the relative tolerance. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>only for be used with specific controllers : thermal, momentum <br/>
They are ignored if a lumped solution is requested </p>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="related">
related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
<p>max_iterations is the number of rows in the matrix<br/>
tolerance is 1.e-10 </p>
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<h1><a class="anchor" id="man_control_momentum">fix_modify AtC control momentum </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_control_momentum">fix_modify AtC control momentum </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC control momentum none <br/>
</p>
<p>fix_modify AtC control momentum rescale &lt;frequency&gt;<br/>
@ -44,21 +42,21 @@ syntax</a></h2>
<li>face_set_id (string) = id of boundary face set, if not specified (or not possible when the atomic domain does not line up with mesh boundaries) defaults to an atomic-quadrature approximate evaulation<br/>
</li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p>fix_modify AtC control momentum glc_velocity <br/>
fix_modify AtC control momentum flux faceset bndy_faces <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>only to be used with specific transfers : elastic <br/>
rescale not valid with time filtering activated </p>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="related">
related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
<p>none </p>
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<h1><a class="anchor" id="man_control_thermal">fix_modify AtC control thermal </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_control_thermal">fix_modify AtC control thermal </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC control thermal &lt;control_type&gt; &lt;optional_args&gt;</p>
<ul>
<li>control_type (string) = none | rescale | hoover | flux<br/>
@ -46,25 +44,25 @@ syntax</a></h2>
<li>face_set_id (string), optional = id of boundary face set, if not specified (or not possible when the atomic domain does not line up with mesh boundaries) defaults to an atomic-quadrature approximate evaulation, does not work with interpolate<br/>
</li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC control thermal none </code> <br/>
<code> fix_modify AtC control thermal rescale 10 </code> <br/>
<code> fix_modify AtC control thermal hoover </code> <br/>
<code> fix_modify AtC control thermal flux </code> <br/>
<code> fix_modify AtC control thermal flux faceset bndy_faces </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Sets the energy exchange mechansim from the finite elements to the atoms, managed through a control algorithm. Rescale computes a scale factor for each atom to match the finite element temperature. Hoover is a Gaussian least-constraint isokinetic thermostat enforces that the nodal restricted atomic temperature matches the finite element temperature. Flux is a similar mode, but rather adds energy to the atoms based on conservation of energy. Hoover and flux allows the prescription of sources or fixed temperatures on the atoms. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>only for be used with specific transfers : thermal (rescale, hoover, flux), two_temperature (flux) <br/>
rescale not valid with time filtering activated </p>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="related">
related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
<p>none<br/>
rescale frequency is 1<br/>
flux boundary_integration_type is interpolate </p>

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<h1><a class="anchor" id="man_control_thermal_correction_max_iterations">fix_modify AtC control thermal correction_max_iterations </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_control_thermal_correction_max_iterations">fix_modify AtC control thermal correction_max_iterations </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC control thermal correction_max_iterations &lt;max_iterations&gt;</p>
<ul>
<li>max_iterations (int) = maximum number of iterations that will be used by iterative matrix solvers<br/>
</li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC control thermal correction_max_iterations 10 </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Sets the maximum number of iterations to compute the 2nd order in time correction term for lambda with the fractional step method. The method uses the same tolerance as the controller's matrix solver. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>only for use with thermal physics using the fractional step method. </p>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="related">
related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
<p>correction_max_iterations is 20 </p>
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<h1><a class="anchor" id="man_decomposition">fix_modify AtC decomposition </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_decomposition">fix_modify AtC decomposition </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC decomposition &lt;type&gt;</p>
<ul>
<li>&lt;type&gt; = <br/>
@ -32,20 +30,20 @@ syntax</a></h2>
distributed_memory: only owned nodal information on processor <br/>
</li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify atc decomposition distributed_memory </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Command for assigning the distribution of work and memory for parallel runs. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>replicated_memory is appropriate for simulations were the number of nodes &lt;&lt; number of atoms </p>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="related">
related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
<p>replicated_memory </p>
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<h1><a class="anchor" id="man_electron_integration">fix_modify AtC extrinsic electron_integration </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_electron_integration">fix_modify AtC extrinsic electron_integration </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC extrinsic electron_integration &lt;integration_type&gt; &lt;num_subcyle_steps(optional)&gt; <br/>
</p>
<ul>
@ -32,20 +30,20 @@ syntax</a></h2>
</li>
<li>num_subcycle_steps (int), optional = number of subcycle steps for the electron time integration</li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC extrinsic electron_integration implicit </code> <br/>
<code> fix_modify AtC extrinsic electron_integration explicit 100 </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Switches between integration scheme for the electron temperature. The number of subcyling steps used to integrate the electron temperature 1 LAMMPS timestep can be manually adjusted to capture fast electron dynamics.</p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<p>For use only with two_temperature type of AtC fix ( see <a class="el" href="man_fix_atc.html">fix atc command</a> ) <br/>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>For use only with two_temperature type of AtC fix ( see <a class="el" href="../../fix_atc.html">fix atc command</a> ) <br/>
</p>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="default">
default</a></h4>
<p>implicit<br/>
subcycle_steps = 1 </p>
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<h1><a class="anchor" id="man_equilibrium_start">fix_modify AtC equilibrium_start </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_equilibrium_start">fix_modify AtC equilibrium_start </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC equilibrium_start &lt;on|off&gt;</p>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify atc equilibrium_start on </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Starts filtered calculations assuming they start in equilibrium, i.e. perfect finite element force balance.</p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>only needed before filtering is begun</p>
<h2><a class="anchor" id="related">
related</a></h2>
<h4><a class="anchor" id="related">
related</a></h4>
<p>see <a class="el" href="man_time_filter.html">fix_modify AtC filter</a></p>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="default">
default</a></h4>
<p>on </p>
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<h1><a class="anchor" id="man_extrinsic_exchange">fix_modify AtC extrinsic exchange </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_extrinsic_exchange">fix_modify AtC extrinsic exchange </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC extrinsic exchange &lt;on|off&gt;</p>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC extrinsic exchange on </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Switches energy exchange between the MD system and electron system on and off</p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>Only valid for use with two_temperature type of AtC fix.</p>
<h2><a class="anchor" id="related">
related</a></h2>
<p>see <a class="el" href="man_fix_atc.html">fix atc command</a></p>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="related">
related</a></h4>
<p>see <a class="el" href="../../fix_atc.html">fix atc command</a></p>
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default</a></h4>
<p>on </p>
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<h1><a class="anchor" id="man_fe_md_boundary">fix_modify AtC fe_md_boundary </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_fe_md_boundary">fix_modify AtC fe_md_boundary </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC fe_md_boundary &lt;faceset | interpolate | no_boundary&gt; [args] </p>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify atc fe_md_boundary interpolate </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Specifies different methods for computing fluxes between between the MD and FE integration regions. Faceset defines a faceset separating the MD and FE regions and uses finite element face quadrature to compute the flux. Interpolate uses a reconstruction scheme to approximate the flux, which is more robust but less accurate if the MD/FE boundary does correspond to a faceset. No boundary results in no fluxes between the systems being computed. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>If faceset is used, all the AtC non-boundary atoms must lie within and completely fill the domain enclosed by the faceset. </p>
<h2><a class="anchor" id="related">
related</a></h2>
<h4><a class="anchor" id="related">
related</a></h4>
<p>see for how to specify the faceset name. </p>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="default">
default</a></h4>
<p>Interpolate. </p>
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<h1><a class="anchor" name="man_fem_mesh">fix_modify AtC fem create mesh</a></h1><h2><a class="anchor" name="syntax">
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<h3><a class="anchor" id="man_fem_mesh">fix_modify AtC fem create mesh</a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
fix_modify AtC fem create mesh &lt;nx&gt; &lt;ny&gt; &lt;nz&gt; &lt;region-id&gt; &lt;f|p&gt; &lt;f|p&gt; &lt;f|p&gt;<ul>
<li>nx ny nz = number of elements in x, y, z</li><li>region-id = id of region that is to be meshed</li><li>f p p = perioidicity flags for x, y, z </li></ul>
<h2><a class="anchor" name="examples">
examples</a></h2>
<code> fix_modify AtC fem create mesh 10 1 1 feRegion p p p </code> <h2><a class="anchor" name="description">
description</a></h2>
Creates a uniform mesh in a rectangular region <h2><a class="anchor" name="restrictions">
restrictions</a></h2>
creates only uniform rectangular grids in a rectangular region <h2><a class="anchor" name="related">
related</a></h2>
<h2><a class="anchor" name="default">
default</a></h2>
none <hr size="1"><address style="align: right;"><small>Generated on Mon Aug 17 09:35:16 2009 for ATC by&nbsp;
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC fem create mesh 10 1 1 feRegion p p p </code> <br/>
</p>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Creates a uniform mesh in a rectangular region</p>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>creates only uniform rectangular grids in a rectangular region</p>
<h4><a class="anchor" id="related">
related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
none
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<h1><a class="anchor" id="man_filter_scale">fix_modify AtC filter scale </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_filter_scale">fix_modify AtC filter scale </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC filter scale &lt;scale&gt; <br/>
</p>
<ul>
<li>scale (real) = characteristic time scale of the filter <br/>
</li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC filter scale 10.0 </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Filters the MD dynamics to construct a more appropriate continuous field. Equilibrating first filters the time derivatives without changing the dynamics to provide a better initial condition to the filtered dynamics </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>only for be used with specific transfers: thermal, two_temperature</p>
<h2><a class="anchor" id="related">
related</a></h2>
<h4><a class="anchor" id="related">
related</a></h4>
<p><a class="el" href="man_time_filter.html">fix_modify AtC filter</a> <a class="el" href="man_filter_type.html">fix_modify AtC filter type</a></p>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="default">
default</a></h4>
<p>0. </p>
</div>
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<a href="../../Manual.html">LAMMPS Manual</a> &nbsp; &nbsp;
<a href="../../fix_atc.html">USER-AtC Manual</a> &nbsp; &nbsp;
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<h1><a class="anchor" id="man_filter_type">fix_modify AtC filter type </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_filter_type">fix_modify AtC filter type </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC filter type &lt;exponential | step | no_filter&gt; <br/>
</p>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC filter type exponential </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Specifies the type of time filter used. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>only for be used with specific transfers: thermal, two_temperature</p>
<h2><a class="anchor" id="related">
related</a></h2>
<h4><a class="anchor" id="related">
related</a></h4>
<p><a class="el" href="man_time_filter.html">fix_modify AtC filter</a> <a class="el" href="man_filter_scale.html">fix_modify AtC filter scale</a></p>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="default">
default</a></h4>
<p>No default. </p>
</div>
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<a href="../../Manual.html">LAMMPS Manual</a> &nbsp; &nbsp;
<a href="../../fix_atc.html">USER-AtC Manual</a> &nbsp; &nbsp;
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<h1><a class="anchor" id="man_fix_atc">fix atc command </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_fix_atc">fix atc command </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix &lt;fixID&gt; &lt;group&gt; atc &lt;type&gt; &lt;parameter_file&gt;</p>
<ul>
<li>fixID = name of fix</li>
@ -38,15 +36,15 @@ syntax</a></h2>
<li>parameter_file = name of the file with material parameters. <br/>
note: Neither hardy nor field requires a parameter file </li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix AtC internal atc thermal Ar_thermal.dat </code> <br/>
<code> fix AtC internal atc two_temperature Ar_ttm.mat </code> <br/>
<code> fix AtC internal atc hardy </code> <br/>
<code> fix AtC internal atc field </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>This fix is the beginning to creating a coupled FE/MD simulation and/or an on-the-fly estimation of continuum fields. The coupled versions of this fix do Verlet integration and the /post-processing does not. After instantiating this fix, several other fix_modify commands will be needed to set up the problem, e.g. define the finite element mesh and prescribe initial and boundary conditions.</p>
<p>The following coupling example is typical, but non-exhaustive:<br/>
</p>
@ -134,16 +132,16 @@ description</a></h2>
</li>
</ul>
<p>Please refer to the standard finite element (FE) texts, e.g. T.J.R Hughes <em> The finite element method </em>, Dover 2003, for the basics of FE simulation.</p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>Thermal and two_temperature (coupling) types use a Verlet time-integration algorithm. The hardy type does not contain its own time-integrator and must be used with a separate fix that does contain one, e.g. nve, nvt, etc.</p>
<p>Currently,</p>
<ul>
<li>the coupling is restricted to thermal physics</li>
<li>the FE computations are done in serial on each processor.</li>
</ul>
<h2><a class="anchor" id="related">
related</a></h2>
<h4><a class="anchor" id="related">
related</a></h4>
<p>fix_modify commands for setup: <br/>
</p>
<ul>
@ -243,8 +241,8 @@ related</a></h2>
<li><a class="el" href="man_remove_molecule.html">fix_modify AtC remove_molecule</a></li>
</ul>
<p>Note: a set of example input files with the attendant material files are included with this package </p>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="default">
default</a></h4>
<p>none </p>
</div>
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<a href="../../Manual.html">LAMMPS Manual</a> &nbsp; &nbsp;
<a href="../../fix_atc.html">USER-AtC Manual</a> &nbsp; &nbsp;
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<h1><a class="anchor" id="man_fix_flux">fix_modify AtC fix_flux </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_fix_flux">fix_modify AtC fix_flux </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC fix_flux &lt;field&gt; &lt;face_set&gt; &lt;value | function&gt;</p>
<ul>
<li>&lt;field&gt; = field name valid for type of physics, temperature | electron_temperature</li>
<li>&lt;face_set&gt; = name of set of element faces </li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify atc fix_flux temperature faceSet 10.0 </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Command for fixing normal fluxes e.g. heat_flux. This command only prescribes the normal component of the physical flux, e.g. heat (energy) flux. The units are in AtC units, i.e. derived from the LAMMPS length, time, and mass scales. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>Only normal fluxes (Neumann data) can be prescribed. </p>
<h2><a class="anchor" id="related">
related</a></h2>
<h4><a class="anchor" id="related">
related</a></h4>
<p>see <a class="el" href="man_unfix_flux.html">fix_modify AtC unfix_flux</a> </p>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="default">
default</a></h4>
</div>
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<link href="doxygen.css" rel="stylesheet" type="text/css"/>
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<a href="../../Manual.html">LAMMPS Manual</a> &nbsp; &nbsp;
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<div class="contents">
<h1><a class="anchor" id="man_fix_nodes">fix_modify AtC fix </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_fix_nodes">fix_modify AtC fix </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC fix &lt;field&gt; &lt;nodeset&gt; &lt;constant | function&gt;</p>
<ul>
<li>&lt;field&gt; = field name valid for type of physics</li>
<li>&lt;nodeset&gt; = name of set of nodes to apply boundary condition</li>
<li>&lt;constant | function&gt; = value or name of function followed by its parameters </li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC fix temperature groupNAME 10. </code> <br/>
<code> fix_modify AtC fix temperature groupNAME 0 0 0 10.0 0 0 1.0 </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Creates a constraint on the values of the specified field at specified nodes. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>keyword 'all' reserved in nodeset name </p>
<h2><a class="anchor" id="related">
related</a></h2>
<h4><a class="anchor" id="related">
related</a></h4>
<p>see <a class="el" href="man_unfix_nodes.html">fix_modify AtC unfix</a> </p>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="default">
default</a></h4>
<p>none </p>
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<h1><a class="anchor" id="man_hardy_computes">fix_modify AtC computes </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_hardy_computes">fix_modify AtC computes </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC computes &lt;add | delete&gt; [per-atom compute id] &lt;volume | number&gt; <br/>
</p>
<ul>
@ -35,8 +33,8 @@ syntax</a></h2>
<li>volume | number (keyword) = field created is a per-unit-volume quantity or a per-atom quantity as weighted by kernel functions <br/>
</li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> compute virial all stress/atom </code> <br/>
<code> fix_modify AtC computes add virial volume </code> <br/>
<code> fix_modify AtC computes delete virial </code> <br/>
@ -44,20 +42,20 @@ examples</a></h2>
<code> compute centrosymmetry all centro/atom </code> <br/>
<code> fix_modify AtC computes add centrosymmetry number </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Calculates continuum fields corresponding to specified per-atom computes created by LAMMPS <br/>
</p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<p>Must be used with the hardy/field type of AtC fix ( see <a class="el" href="man_fix_atc.html">fix atc command</a> ) <br/>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>Must be used with the hardy/field type of AtC fix ( see <a class="el" href="../../fix_atc.html">fix atc command</a> ) <br/>
Per-atom compute must be specified before corresponding continuum field can be requested <br/>
</p>
<h2><a class="anchor" id="related">
related</a></h2>
<h4><a class="anchor" id="related">
related</a></h4>
<p>See manual page for compute </p>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="default">
default</a></h4>
<p>No defaults exist for this command </p>
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<h1><a class="anchor" id="man_hardy_fields">fix_modify AtC fields </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_hardy_fields">fix_modify AtC fields </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC fields &lt;all | none&gt; <br/>
fix_modify AtC fields &lt;add | delete&gt; &lt;list_of_fields&gt; <br/>
</p>
@ -56,24 +54,24 @@ syntax</a></h2>
type_concentration: volume fraction of a specific atom type <br/>
</li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC fields add velocity temperature </code> </p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Allows modification of the fields calculated and output by the transfer class. The commands are cumulative, e.g.<br/>
<code> fix_modify AtC fields none </code> <br/>
followed by <br/>
<code> fix_modify AtC fields add velocity temperature </code> <br/>
will only output the velocity and temperature fields. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<p>Must be used with the hardy/field type of AtC fix, see <a class="el" href="man_fix_atc.html">fix atc command</a>. Currently, the stress and heat flux formulas are only correct for central force potentials, e.g. Lennard-Jones and EAM but not Stillinger-Weber. </p>
<h2><a class="anchor" id="related">
related</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>Must be used with the hardy/field type of AtC fix, see <a class="el" href="../../fix_atc.html">fix atc command</a>. Currently, the stress and heat flux formulas are only correct for central force potentials, e.g. Lennard-Jones and EAM but not Stillinger-Weber. </p>
<h4><a class="anchor" id="related">
related</a></h4>
<p>See <a class="el" href="man_hardy_gradients.html">fix_modify AtC gradients</a> , <a class="el" href="man_hardy_rates.html">fix_modify AtC rates</a> and <a class="el" href="man_hardy_computes.html">fix_modify AtC computes</a> </p>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="default">
default</a></h4>
<p>By default, no fields are output </p>
</div>
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<h1><a class="anchor" id="man_hardy_gradients">fix_modify AtC gradients </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_hardy_gradients">fix_modify AtC gradients </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC gradients &lt;add | delete&gt; &lt;list_of_fields&gt; <br/>
</p>
<ul>
@ -33,21 +31,21 @@ syntax</a></h2>
<li>fields (keyword) = <br/>
gradients can be calculated for all fields listed in <a class="el" href="man_hardy_fields.html">fix_modify AtC fields</a></li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC gradients add temperature velocity stress </code> <br/>
<code> fix_modify AtC gradients delete velocity </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Requests calculation and ouput of gradients of the fields from the transfer class. These gradients will be with regard to spatial or material coordinate for eulerian or lagrangian analysis, respectively, as specified by atom_element_map (see <a class="el" href="man_atom_element_map.html">fix_modify AtC atom_element_map</a> ) </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<p>Must be used with the hardy/field type of AtC fix ( see <a class="el" href="man_fix_atc.html">fix atc command</a> ) </p>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>Must be used with the hardy/field type of AtC fix ( see <a class="el" href="../../fix_atc.html">fix atc command</a> ) </p>
<h4><a class="anchor" id="related">
related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
<p>No gradients are calculated by default </p>
</div>
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@ -7,24 +7,22 @@
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</head>
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<a href="http://lammps.sandia.gov">LAMMPS Website</a> &nbsp; &nbsp;
<a href="../../Manual.html">LAMMPS Manual</a> &nbsp; &nbsp;
<a href="../../fix_atc.html">USER-AtC Manual</a> &nbsp; &nbsp;
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<div class="contents">
<h1><a class="anchor" id="man_hardy_kernel">fix_modify AtC kernel </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_hardy_kernel">fix_modify AtC kernel </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC kernel &lt;type&gt; &lt;parameters&gt;</p>
<ul>
<li>type (keyword) = step, cell, cubic_bar, cubic_cylinder, cubic_sphere, quartic_bar, quartic_cylinder, quartic_sphere <br/>
@ -40,22 +38,22 @@ syntax</a></h2>
quartic_sphere = radius (double) <br/>
</li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC kernel cell 1.0 1.0 1.0 </code> <br/>
<code> fix_modify AtC kernel quartic_sphere 10.0 </code> </p>
<h2><a class="anchor" id="description">
description</a></h2>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>Must be used with the hardy AtC fix <br/>
For bar kernel types, half-width oriented along x-direction <br/>
For cylinder kernel types, cylindrical axis is assumed to be in z-direction <br/>
( see <a class="el" href="man_fix_atc.html">fix atc command</a> ) </p>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
( see <a class="el" href="../../fix_atc.html">fix atc command</a> ) </p>
<h4><a class="anchor" id="related">
related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
<p>No default </p>
</div>
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<a href="../../fix_atc.html">USER-AtC Manual</a> &nbsp; &nbsp;
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<h1><a class="anchor" id="man_hardy_on_the_fly">fix_modify AtC on_the_fly </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_hardy_on_the_fly">fix_modify AtC on_the_fly </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC on_the_fly &lt;bond | kernel&gt; &lt;optional on | off&gt; <br/>
- bond | kernel (keyword) = specifies on-the-fly calculation of bond or kernel matrix elements <br/>
</p>
@ -32,24 +30,24 @@ syntax</a></h2>
<li>on | off (keyword) = activate or discontinue on-the-fly mode <br/>
</li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC on_the_fly bond on </code> <br/>
<code> fix_modify AtC on_the_fly kernel </code> <br/>
<code> fix_modify AtC on_the_fly kernel off </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Overrides normal mode of pre-calculating and storing bond pair-to-node a nd kernel atom-to-node matrices. If activated, will calculate elements of t hese matrices during repeated calls of field computations (i.e. "on-the-fly") and not store them for future use. <br/>
on flag is optional - if omitted, on_the_fly will be activated for the s pecified matrix. Can be deactivated using off flag. <br/>
</p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<p>Must be used with the hardy/field type of AtC fix ( see <a class="el" href="man_fix_atc.html">fix atc command</a> ) </p>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>Must be used with the hardy/field type of AtC fix ( see <a class="el" href="../../fix_atc.html">fix atc command</a> ) </p>
<h4><a class="anchor" id="related">
related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
<p>By default, on-the-fly calculation is not active (i.e. off). However, code does a memory allocation check to determine if it can store all needed bond and kernel matrix ele ments. If this allocation fails, on-the-fly is activated. <br/>
</p>
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View File

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<h1><a class="anchor" id="man_hardy_rates">fix_modify AtC rates </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_hardy_rates">fix_modify AtC rates </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC rates &lt;add | delete&gt; &lt;list_of_fields&gt; <br/>
</p>
<ul>
@ -33,22 +31,22 @@ syntax</a></h2>
<li>fields (keyword) = <br/>
rates can be calculated for all fields listed in <a class="el" href="man_hardy_fields.html">fix_modify AtC fields</a></li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC rates add temperature velocity stress </code> <br/>
<code> fix_modify AtC rates delete stress </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Requests calculation and ouput of rates (time derivatives) of the fields from the transfer class. For eulerian analysis (see <a class="el" href="man_atom_element_map.html">fix_modify AtC atom_element_map</a> ), these rates are the partial time derivatives of the nodal fields, not the full (material) time derivatives. <br/>
</p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<p>Must be used with the hardy/field type of AtC fix ( see <a class="el" href="man_fix_atc.html">fix atc command</a> ) </p>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>Must be used with the hardy/field type of AtC fix ( see <a class="el" href="../../fix_atc.html">fix atc command</a> ) </p>
<h4><a class="anchor" id="related">
related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
<p>No rates are calculated by default </p>
</div>
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@ -7,41 +7,39 @@
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<a href="../../Manual.html">LAMMPS Manual</a> &nbsp; &nbsp;
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<h1><a class="anchor" id="man_initial">fix_modify AtC initial </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_initial">fix_modify AtC initial </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC initial &lt;field&gt; &lt;nodeset&gt; &lt;constant | function&gt;</p>
<ul>
<li>&lt;field&gt; = field name valid for type of physics, temperature | electron_temperature</li>
<li>&lt;nodeset&gt; = name of set of nodes to apply initial condition</li>
<li>&lt;constant | function&gt; = value or name of function followed by its parameters </li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify atc initial temperature groupNAME 10. </code> </p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Sets the initial values for the specified field at the specified nodes. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>keyword 'all' reserved in nodeset name </p>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="default">
default</a></h4>
<p>none </p>
</div>
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<h1><a class="anchor" id="man_internal_atom_integrate">fix_modify AtC internal_atom_integrate </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_internal_atom_integrate">fix_modify AtC internal_atom_integrate </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC internal_atom_integrate &lt;on | off&gt; <code> fix_modify AtC internal_atom_integrate on </code> </p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Has AtC perform time integration for the atoms in the group on which it operates. This does not include boundary atoms. </p>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="default">
default</a></h4>
<p>on for coupling methods, off for post-processors off </p>
</div>
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@ -7,42 +7,40 @@
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<h1><a class="anchor" id="man_internal_element_set">fix_modify AtC internal_element_set </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_internal_element_set">fix_modify AtC internal_element_set </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC internal_element_set &lt;element-set-name&gt;</p>
<ul>
<li>&lt;element-set-name&gt; = name of element set defining internal region, or off </li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC internal_element_set myElementSet </code> <code> fix_modify AtC internal_element_set off </code> </p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Enables AtC to base the region for internal atoms to be an element set. If no ghost atoms are used, all the AtC atoms must be constrained to remain in this element set by the user, e.g., with walls. If boundary atoms are used in conjunction with Eulerian atom maps AtC will partition all atoms of a boundary or internal type to be of type internal if they are in the internal region or to be of type boundary otherwise. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>If boundary atoms are used in conjunction with Eulerian atom maps, the Eulerian reset frequency must be an integer multiple of the Lammps reneighbor frequency </p>
<h2><a class="anchor" id="related">
related</a></h2>
<h4><a class="anchor" id="related">
related</a></h4>
<p>see atom_element_map_type and boundary </p>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="default">
default</a></h4>
<p>off </p>
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<h1><a class="anchor" id="man_internal_quadrature">fix_modify AtC internal_quadrature </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_internal_quadrature">fix_modify AtC internal_quadrature </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify atc internal_quadrature &lt;on | off&gt; [region] </p>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify atc internal_quadrature off </code> </p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Command to use or not use atomic quadrature on internal elements fully filled with atoms. By turning the internal quadrature off these elements do not contribute to the governing PDE and the fields at the internal nodes follow the weighted averages of the atomic data. </p>
<h2><a class="anchor" id="optional">
optional</a></h2>
<h4><a class="anchor" id="optional">
optional</a></h4>
<p>Optional region tag specifies which finite element nodes will be treated as being within the MD region. This option is only valid with internal_quadrature off. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<h4><a class="anchor" id="related">
related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
<p>on </p>
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<h1><a class="anchor" id="man_kernel_function">fix_modify AtC kernel </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_kernel_function">fix_modify AtC kernel </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC kernel &lt;type&gt; &lt;parameters&gt;</p>
<ul>
<li>type (keyword) = step, cell, cubic_bar, cubic_cylinder, cubic_sphere, quartic_bar, quartic_cylinder, quartic_sphere <br/>
@ -40,21 +38,21 @@ syntax</a></h2>
quartic_sphere = radius (double) <br/>
</li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p>fix_modify AtC kernel cell 1.0 1.0 1.0 fix_modify AtC kernel quartic_sphere 10.0 </p>
<h2><a class="anchor" id="description">
description</a></h2>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>Must be used with the hardy AtC fix <br/>
For bar kernel types, half-width oriented along x-direction <br/>
For cylinder kernel types, cylindrical axis is assumed to be in z-direction <br/>
( see <a class="el" href="man_fix_atc.html">fix atc command</a> ) </p>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
( see <a class="el" href="../../fix_atc.html">fix atc command</a> ) </p>
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related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
<p>No default </p>
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<h1><a class="anchor" id="man_localized_lambda">fix_modify AtC control localized_lambda </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_localized_lambda">fix_modify AtC control localized_lambda </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC control localized_lambda &lt;on|off&gt; </p>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify atc control localized_lambda on </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Turns on localization algorithms for control algorithms to restrict the influence of FE coupling or boundary conditions to a region near the boundary of the MD region. Control algorithms will not affect atoms in elements not possessing faces on the boundary of the region. Flux-based control is localized via row-sum lumping while quantity control is done by solving a truncated matrix equation. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
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related</a></h4>
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<p>Default is off. </p>
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<h1><a class="anchor" id="man_lumped_lambda_solve">fix_modify AtC control lumped_lambda_solve </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_lumped_lambda_solve">fix_modify AtC control lumped_lambda_solve </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC control lumped_lambda_solve &lt;on|off&gt; </p>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify atc control lumped_lambda_solve on </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Command to use or not use lumped matrix for lambda solve </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
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<h1><a class="anchor" id="man_mask_direction">fix_modify AtC control mask_direction </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_mask_direction">fix_modify AtC control mask_direction </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC control mask_direction &lt;direction&gt; &lt;on|off&gt; </p>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify atc control mask_direction 0 on </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Command to mask out certain dimensions from the atomic regulator </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<h4><a class="anchor" id="related">
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<h1><a class="anchor" id="man_mass_matrix">fix_modify AtC mass_matrix </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_mass_matrix">fix_modify AtC mass_matrix </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC mass_matrix &lt;fe | md_fe&gt;</p>
<ul>
<li>&lt;fe | md_fe&gt; = activiate/deactiviate using the FE mass matrix in the MD region </li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify atc mass_matrix fe </code> </p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Determines whether AtC uses the FE mass matrix based on Gaussian quadrature or based on atomic quadrature in the MD region. This is useful for fully overlapping simulations to improve efficiency. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>Should not be used unless the FE region is contained within the MD region, otherwise the method will be unstable and inaccurate </p>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="related">
related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
<p>Default is off </p>
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<h1><a class="anchor" id="man_material">fix_modify AtC material </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_material">fix_modify AtC material </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC material [elementset_name] [material_id] <br/>
</p>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC material gap_region 2</code> </p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Sets the material model in elementset_name to be of type material_id. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>The element set must already be created and the material must be specified in the material file given the the atc fix on construction </p>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="related">
related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
<p>All elements default to the first material in the material file. </p>
</div>
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<h1><a class="anchor" id="man_mesh_add_to_nodeset">fix_modify AtC mesh add_to_nodeset </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_mesh_add_to_nodeset">fix_modify AtC mesh add_to_nodeset </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC mesh add_to_nodeset &lt;id&gt; &lt;xmin&gt; &lt;xmax&gt; &lt;ymin&gt; &lt;ymax&gt; &lt;zmin&gt; &lt;zmax&gt;</p>
<ul>
<li>&lt;id&gt; = id of FE nodeset to be added to</li>
<li>&lt;xmin&gt; &lt;xmax&gt; &lt;ymin&gt; &lt;ymax&gt; &lt;zmin&gt; &lt;zmax&gt; = coordinates of the bounding box that contains the desired nodes to be added </li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC mesh add_to_nodeset lbc -11.9 -11 -12 12 -12 12 </code> </p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Command to add nodes to an already existing FE nodeset. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<h4><a class="anchor" id="related">
related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
<p>Coordinates are assumed to be in lattice units. </p>
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<h1><a class="anchor" id="man_mesh_create">fix_modify AtC mesh create </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_mesh_create">fix_modify AtC mesh create </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC mesh create &lt;nx&gt; &lt;ny&gt; &lt;nz&gt; &lt;region-id&gt; &lt;f|p&gt; &lt;f|p&gt; &lt;f|p&gt; <br/>
</p>
<ul>
@ -32,21 +30,21 @@ syntax</a></h2>
<li>region-id = id of region that is to be meshed</li>
<li>f p p = periodicity flags for x, y, z </li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC mesh create 10 1 1 feRegion p p p </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Creates a uniform mesh in a rectangular region </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>Creates only uniform rectangular grids in a rectangular region </p>
<h2><a class="anchor" id="related">
related</a></h2>
<h4><a class="anchor" id="related">
related</a></h4>
<p><a class="el" href="man_mesh_quadrature.html">fix_modify AtC mesh quadrature</a> </p>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="default">
default</a></h4>
<p>When created, mesh defaults to gauss2 (2-point Gaussian) quadrature. Use "mesh quadrature" command to change quadrature style. </p>
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<h1><a class="anchor" id="man_mesh_create_elementset">fix_modify AtC mesh create_elementset </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_mesh_create_elementset">fix_modify AtC mesh create_elementset </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC create_elementset &lt;id&gt; &lt;xmin&gt; &lt;xmax&gt; &lt;ymin&gt; &lt;ymax&gt; &lt;zmin&gt; &lt;zmax&gt;</p>
<ul>
<li>&lt;id&gt; = id to assign to the collection of FE element</li>
<li>&lt;xmin&gt; &lt;xmax&gt; &lt;ymin&gt; &lt;ymax&gt; &lt;zmin&gt; &lt;zmax&gt; = coordinates of the bounding box that contains only the desired elements </li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC mesh create_elementset middle -4.1 4.1 -100 100 -100 1100 </code> </p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Command to assign an id to a set of FE elements to be used subsequently in defining material and mesh-based operations. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>Only viable for rectangular grids. </p>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="related">
related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
<p>Coordinates are assumed to be in lattice units. </p>
</div>
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@ -7,24 +7,22 @@
<link href="doxygen.css" rel="stylesheet" type="text/css"/>
</head>
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<a href="../../Manual.html">LAMMPS Manual</a> &nbsp; &nbsp;
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<div class="contents">
<h1><a class="anchor" id="man_mesh_create_faceset_box">fix_modify AtC mesh create_faceset box </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_mesh_create_faceset_box">fix_modify AtC mesh create_faceset box </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC mesh create_faceset &lt;id&gt; box &lt;xmin&gt; &lt;xmax&gt; &lt;ymin&gt; &lt;ymax&gt; &lt;zmin&gt; &lt;zmax&gt; &lt;in|out&gt; [units]</p>
<ul>
<li>&lt;id&gt; = id to assign to the collection of FE faces</li>
@ -32,19 +30,19 @@ syntax</a></h2>
<li>&lt;in|out&gt; = "in" gives inner faces to the box, "out" gives the outer faces to the box</li>
<li>units = option to specify real as opposed to lattice units </li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC mesh create_faceset obndy box -4.0 4.0 -12 12 -12 12 out </code> </p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Command to assign an id to a set of FE faces. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>Only viable for rectangular grids. </p>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="related">
related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
<p>The default options are units = lattice and the use of outer faces </p>
</div>
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<div class="contents">
<h1><a class="anchor" id="man_mesh_create_faceset_plane">fix_modify AtC mesh create_faceset plane </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_mesh_create_faceset_plane">fix_modify AtC mesh create_faceset plane </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC mesh create_faceset &lt;id&gt; plane &lt;x|y|z&gt; &lt;val1&gt; &lt;x|y|z&gt; &lt;lval2&gt; &lt;uval2&gt; [units]</p>
<ul>
<li>&lt;id&gt; = id to assign to the collection of FE faces</li>
@ -32,19 +30,19 @@ syntax</a></h2>
<li>&lt;val1&gt;,&lt;lval2&gt;,&lt;uval2&gt; = plane is specified as the x|y|z=val1 plane bounded by the segments x|y|z = [lval2,uval2]</li>
<li>units = option to specify real as opposed to lattice units </li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC mesh create_faceset xyplane plane y 0 x -4 0 </code> </p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Command to assign an id to a set of FE faces. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>Only viable for rectangular grids. </p>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="related">
related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
<p>The default option is units = lattice. </p>
</div>
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<h1><a class="anchor" id="man_mesh_create_nodeset">fix_modify AtC mesh create_nodeset </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_mesh_create_nodeset">fix_modify AtC mesh create_nodeset </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC mesh create_nodeset &lt;id&gt; &lt;xmin&gt; &lt;xmax&gt; &lt;ymin&gt; &lt;ymax&gt; &lt;zmin&gt; &lt;zmax&gt;</p>
<ul>
<li>&lt;id&gt; = id to assign to the collection of FE nodes</li>
<li>&lt;xmin&gt; &lt;xmax&gt; &lt;ymin&gt; &lt;ymax&gt; &lt;zmin&gt; &lt;zmax&gt; = coordinates of the bounding box that contains only the desired nodes </li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC mesh create_nodeset lbc -12.1 -11.9 -12 12 -12 12 </code> </p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Command to assign an id to a set of FE nodes to be used subsequently in defining boundary conditions. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<h4><a class="anchor" id="related">
related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
<p>Coordinates are assumed to be in lattice units. </p>
</div>
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<div class="contents">
<h1><a class="anchor" id="man_mesh_delete_elements">fix_modify AtC mesh delete_elements </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_mesh_delete_elements">fix_modify AtC mesh delete_elements </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC mesh delete_elements &lt;element_set&gt;</p>
<ul>
<li>&lt;element_set&gt; = name of an element set </li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC delete_elements gap </code> </p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Deletes a group of elements from the mesh. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<h4><a class="anchor" id="related">
related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
<p>none </p>
</div>
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<h1><a class="anchor" id="man_mesh_nodeset_to_elementset">fix_modify AtC mesh nodeset_to_elementset </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_mesh_nodeset_to_elementset">fix_modify AtC mesh nodeset_to_elementset </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC nodeset_to_elementset &lt;nodeset_id&gt; &lt;elementset_id&gt; &lt;max/min&gt;</p>
<ul>
<li>&lt;nodeset_id&gt; = id of desired nodeset from which to create elementset</li>
<li>&lt;elementset_id&gt; = id to assign to the collection of FE element</li>
<li>&lt;max/min&gt; = flag to choose either the maximal or minimal elementset </li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC mesh nodeset_to_elementset myNodeset myElementset min </code> </p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Command to create an elementset from an existing nodeset. Either the minimal element set of elements with all nodes in the set, or maximal element set with all elements with at least one node in the set, can be created </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>None. </p>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="related">
related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
<p>Unless specified, the maximal element set is created </p>
</div>
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<h1><a class="anchor" id="man_mesh_output">fix_modify AtC mesh output </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_mesh_output">fix_modify AtC mesh output </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC mesh output &lt;file_prefix&gt; </p>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC mesh output meshData </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Command to output mesh and associated data: nodesets, facesets, and elementsets. This data is only output once upon initialization since currently the mesh is static. Creates (binary, "gold" format) Ensight output of mesh data. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>none </p>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="related">
related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
<p>none </p>
</div>
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<h1><a class="anchor" id="man_mesh_quadrature">fix_modify AtC mesh quadrature </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_mesh_quadrature">fix_modify AtC mesh quadrature </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC mesh quadrature &lt;quad&gt;</p>
<ul>
<li>quad = one of &lt;nodal|gauss1|gauss2|gauss3|face&gt; --- when a mesh is created it defaults to gauss2, use this call to change it after the fact </li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC mesh quadrature face </code> </p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>(Re-)assigns the quadrature style for the existing mesh. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h2><a class="anchor" id="related">
related</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<h4><a class="anchor" id="related">
related</a></h4>
<p><a class="el" href="man_mesh_create.html">fix_modify AtC mesh create</a> </p>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="default">
default</a></h4>
<p>none </p>
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<h1><a class="anchor" id="man_mesh_read">fix_modify AtC mesh read </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_mesh_read">fix_modify AtC mesh read </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC mesh read &lt;filename&gt; &lt;f|p&gt; &lt;f|p&gt; &lt;f|p&gt;</p>
<ul>
<li>filename = name of file containing mesh to be read</li>
<li>f p p = periodicity flags for x, y, z </li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC mesh read myComponent.mesh p p p </code> <br/>
<code> fix_modify AtC mesh read myOtherComponent.exo </code> </p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Reads a mesh from a text or exodus file, and assigns periodic boundary conditions if needed. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<h4><a class="anchor" id="related">
related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
<p>periodicity flags are false by default </p>
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<h1><a class="anchor" id="man_mesh_write">fix_modify AtC mesh write </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_mesh_write">fix_modify AtC mesh write </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC mesh write &lt;filename&gt;</p>
<ul>
<li>filename = name of file to write mesh </li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC mesh write myMesh.mesh </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Writes a mesh to a text file. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<h4><a class="anchor" id="related">
related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
</div>
<hr size="1"/><address style="text-align: right;"><small>Generated on 21 Aug 2013 for ATC by&nbsp;
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<body>
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<a href="http://lammps.sandia.gov">LAMMPS Website</a> &nbsp; &nbsp;
<a href="../../Manual.html">LAMMPS Manual</a> &nbsp; &nbsp;
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<h1><a class="anchor" id="man_momentum_time_integration">fix_modify AtC time_integration (momentum) </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_momentum_time_integration">fix_modify AtC time_integration (momentum) </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC time_integration &lt;descriptor&gt; <br/>
</p>
<ul>
@ -33,24 +31,24 @@ syntax</a></h2>
</ul>
<p>various time integration methods for the finite elements<br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>verlet - atomic velocity update with 2nd order Verlet, nodal temperature update with 2nd order Verlet, kinetostats based on controlling force <br/>
fractional_step - atomic velocity update with 2nd order Verlet, mixed nodal momentum update, 2nd order Verlet for continuum and exact 2nd order Verlet for atomic contributions, kinetostats based on controlling discrete momentum changes<br/>
gear - atomic velocity update with 2nd order Verlet, nodal temperature update with 3rd or 4th order Gear, kinetostats based on controlling power <br/>
</p>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify atc time_integration verlet </code> <br/>
<code> fix_modify atc time_integration fractional_step </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h2><a class="anchor" id="related">
related</a></h2>
<p>see <a class="el" href="man_fix_atc.html">fix atc command</a> </p>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<h4><a class="anchor" id="related">
related</a></h4>
<p>see <a class="el" href="../../fix_atc.html">fix atc command</a> </p>
<h4><a class="anchor" id="default">
default</a></h4>
<p>none </p>
</div>
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@ -7,24 +7,22 @@
<link href="doxygen.css" rel="stylesheet" type="text/css"/>
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<a href="http://lammps.sandia.gov">LAMMPS Website</a> &nbsp; &nbsp;
<a href="../../Manual.html">LAMMPS Manual</a> &nbsp; &nbsp;
<a href="../../fix_atc.html">USER-AtC Manual</a> &nbsp; &nbsp;
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<h1><a class="anchor" id="man_output">fix_modify AtC output </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_output">fix_modify AtC output </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC output &lt;filename_prefix&gt; &lt;frequency&gt; [text | full_text | binary | vector_components | tensor_components ] fix_modify AtC output index [step | time ]</p>
<ul>
<li>filename_prefix (string) = prefix for data files</li>
@ -37,23 +35,23 @@ syntax</a></h2>
tensor_components = outputs tensor as scalar components (use this for Paraview)<br/>
</li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC output heatFE 100 </code> <br/>
<code> fix_modify AtC output hardyFE 1 text tensor_components </code> <br/>
<code> fix_modify AtC output hardyFE 10 text binary tensor_components </code> <br/>
<code> fix_modify AtC output index step </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Creates text and/or binary (Ensight, "gold" format) output of nodal/mesh data which is transfer/physics specific. Output indexed by step or time is possible. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h2><a class="anchor" id="related">
related</a></h2>
<p>see <a class="el" href="man_fix_atc.html">fix atc command</a> </p>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<h4><a class="anchor" id="related">
related</a></h4>
<p>see <a class="el" href="../../fix_atc.html">fix atc command</a> </p>
<h4><a class="anchor" id="default">
default</a></h4>
<p>no default format output indexed by time </p>
</div>
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@ -7,44 +7,42 @@
<link href="doxygen.css" rel="stylesheet" type="text/css"/>
</head>
<body>
<center>
<a href="http://lammps.sandia.gov">LAMMPS Website</a> &nbsp; &nbsp;
<a href="../../Manual.html">LAMMPS Manual</a> &nbsp; &nbsp;
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<h1><a class="anchor" id="man_output_elementset">fix_modify AtC output elementset </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_output_elementset">fix_modify AtC output elementset </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC output volume_integral &lt;eset_name&gt; &lt;field&gt; {`</p>
<ul>
<li>set_name (string) = name of elementset to be integrated over</li>
<li>fieldname (string) = name of field to integrate csum = creates nodal sum over nodes in specified nodeset <br/>
</li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC output eset1 mass_density </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Performs volume integration of specified field over elementset and outputs resulting variable values to GLOBALS file. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h2><a class="anchor" id="related">
related</a></h2>
<p>see <a class="el" href="man_fix_atc.html">fix atc command</a> </p>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<h4><a class="anchor" id="related">
related</a></h4>
<p>see <a class="el" href="../../fix_atc.html">fix atc command</a> </p>
<h4><a class="anchor" id="default">
default</a></h4>
<p>none </p>
</div>
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<div class="contents">
<h1><a class="anchor" id="man_output_nodeset">fix_modify AtC output nodeset </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_output_nodeset">fix_modify AtC output nodeset </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC output nodeset &lt;nodeset_name&gt; &lt;operation&gt;</p>
<ul>
<li>nodeset_name (string) = name of nodeset to be operated on</li>
@ -32,20 +30,20 @@ syntax</a></h2>
sum = creates nodal sum over nodes in specified nodeset <br/>
</li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC output nodeset nset1 sum </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Performs operation over the nodes belonging to specified nodeset and outputs resulting variable values to GLOBALS file. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h2><a class="anchor" id="related">
related</a></h2>
<p>see <a class="el" href="man_fix_atc.html">fix atc command</a> </p>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<h4><a class="anchor" id="related">
related</a></h4>
<p>see <a class="el" href="../../fix_atc.html">fix atc command</a> </p>
<h4><a class="anchor" id="default">
default</a></h4>
<p>none </p>
</div>
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<h1><a class="anchor" id="man_pair_interactions">fix_modify AtC pair_interactions/bond_interactions </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_pair_interactions">fix_modify AtC pair_interactions/bond_interactions </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC pair_interactions &lt;on|off&gt; <br/>
fix_modify AtC bond_interactions &lt;on|off&gt; <br/>
</p>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC bond_interactions on </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>include bonds and/or pairs in the stress and heat flux computations </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<h4><a class="anchor" id="related">
related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
<p>pair interactions: on, bond interactions: off </p>
</div>
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@ -7,43 +7,41 @@
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<h1><a class="anchor" id="man_poisson_solver">fix_modify AtC poisson_solver </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_poisson_solver">fix_modify AtC poisson_solver </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC poisson_solver mesh create &lt;nx&gt; &lt;ny&gt; &lt;nz&gt; &lt;region-id&gt; &lt;f|p&gt; &lt;f|p&gt; &lt;f|p&gt;</p>
<ul>
<li>nx ny nz = number of elements in x, y, z</li>
<li>region-id = id of region that is to be meshed</li>
<li>f p p = perioidicity flags for x, y, z </li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC poisson_solver mesh create 10 1 1 feRegion p p p </code> </p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Creates a uniform mesh in a rectangular region </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>creates only uniform rectangular grids in a rectangular region </p>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="related">
related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
<p>none </p>
</div>
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<h1><a class="anchor" id="man_read_restart">fix_modify AtC read_restart </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_read_restart">fix_modify AtC read_restart </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC read_restart [file_name] <br/>
</p>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC read_restart ATC_state </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Reads the current state of the fields from a named text-based restart file. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>The restart file only contains fields and their time derivatives. The reference positions of the atoms and the commands that initialize the fix are not saved e.g. an identical mesh containing the same atoms will have to be recreated. </p>
<h2><a class="anchor" id="related">
related</a></h2>
<h4><a class="anchor" id="related">
related</a></h4>
<p>see write_restart <a class="el" href="man_write_restart.html">fix_modify AtC write_restart</a> </p>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="default">
default</a></h4>
<p>none </p>
</div>
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</div>
<div class="contents">
<h1><a class="anchor" id="man_remove_molecule">fix_modify AtC remove_molecule </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_remove_molecule">fix_modify AtC remove_molecule </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify_AtC remove_molecule &lt;TAG&gt; <br/>
</p>
<ul>
<li>&lt;TAG&gt; = tag for tracking a molecule type <br/>
</li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC remove_molecule water </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Removes tag designated for tracking a specified set of molecules. <br/>
</p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<h4><a class="anchor" id="related">
related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
<p>No defaults for this command. </p>
</div>
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<a href="../../Manual.html">LAMMPS Manual</a> &nbsp; &nbsp;
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<div class="contents">
<h1><a class="anchor" id="man_remove_source">fix_modify AtC remove_source </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_remove_source">fix_modify AtC remove_source </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC remove_source &lt;field&gt; &lt;element_set&gt;</p>
<ul>
<li>&lt;field&gt; = field name valid for type of physics</li>
<li>&lt;element_set&gt; = name of set of elements </li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify atc remove_source temperature groupNAME </code> </p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Remove a domain source. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>keyword 'all' reserved in element_set name </p>
<h2><a class="anchor" id="related">
related</a></h2>
<h4><a class="anchor" id="related">
related</a></h4>
<p>see <a class="el" href="man_source.html">fix_modify AtC source</a> </p>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="default">
default</a></h4>
</div>
<hr size="1"/><address style="text-align: right;"><small>Generated on 21 Aug 2013 for ATC by&nbsp;
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<h1><a class="anchor" id="man_remove_species">fix_modify AtC remove_species </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_remove_species">fix_modify AtC remove_species </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify_AtC delete_species &lt;TAG&gt; <br/>
</p>
<ul>
<li>&lt;TAG&gt; = tag for tracking a species <br/>
</li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC remove_species gold </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Removes tag designated for tracking a specified species. <br/>
</p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<h4><a class="anchor" id="related">
related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
<p>No defaults for this command. </p>
</div>
<hr size="1"/><address style="text-align: right;"><small>Generated on 21 Aug 2013 for ATC by&nbsp;

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<div class="contents">
<h1><a class="anchor" id="man_reset_atomic_reference_positions">fix_modify AtC reset_atomic_reference_positions </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_reset_atomic_reference_positions">fix_modify AtC reset_atomic_reference_positions </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC reset_atomic_reference_positions </p>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify atc reset_atomic_reference_positions </code></p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p><code> Resets the atomic positions <a class="el" href="namespaceATC.html" title="owned field/s: MASS_DENSITY">ATC</a> uses to perform point to field operations. In can be used to use perfect lattice sites in <a class="el" href="namespaceATC.html" title="owned field/s: MASS_DENSITY">ATC</a> but a thermalized or deformed lattice in LAMMPS. </code></p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p><code> </code></p>
<h2><a class="anchor" id="related">
related</a></h2>
<h4><a class="anchor" id="related">
related</a></h4>
<p><code> </code></p>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="default">
default</a></h4>
<p><code> Default is off </code></p>
</div>
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<h1><a class="anchor" id="man_reset_time">fix_modify AtC reset_time </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_reset_time">fix_modify AtC reset_time </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC reset_time </p>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify atc reset_time 0.0 </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Resets the simulation time counter. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h2><a class="anchor" id="syntax">
syntax</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<h4><a class="anchor" id="related">
related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
<h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC kernel_bandwidth </p>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify atc reset_time 8 </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Sets a maximum parallel bandwidth for the kernel functions during parallel communication. If the command is not issued, the default will be to assume the bandwidth of the kernel matrix corresponds to the number of sampling locations. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>Only is used if kernel functions are being used. </p>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="related">
related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
<p>Number of sample locations. </p>
</div>
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<a href="../../Manual.html">LAMMPS Manual</a> &nbsp; &nbsp;
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<h1><a class="anchor" id="man_sample_frequency">fix_modify AtC sample_frequency </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_sample_frequency">fix_modify AtC sample_frequency </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC sample_frequency [freq]</p>
<ul>
<li>freq (int) : frequency to sample field in number of steps </li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC sample_frequency 10 </code></p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p><code> Specifies a frequency at which fields are computed for the case where time filters are being applied. </code></p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<p><code> Must be used with the hardy/field AtC fix ( see <a class="el" href="man_fix_atc.html">fix atc command</a> ) and is only relevant when time filters are being used. </code></p>
<h2><a class="anchor" id="related">
related</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p><code> Must be used with the hardy/field AtC fix ( see <a class="el" href="../../fix_atc.html">fix atc command</a> ) and is only relevant when time filters are being used. </code></p>
<h4><a class="anchor" id="related">
related</a></h4>
<p><code> </code></p>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="default">
default</a></h4>
<p><code> none </code></p>
</div>
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<h1><a class="anchor" id="man_set">fix_modify AtC set </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_set">fix_modify AtC set </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC set reference_potential_energy &lt;value_or_filename(optional)&gt;</p>
<ul>
<li>value (double) : optional user specified zero point for PE in native LAMMPS energy units <br/>
</li>
<li>filename (string) : optional user specified string for file of nodal PE values to be read-in </li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC set reference_potential_energy </code> <br/>
<code> fix_modify AtC set reference_potential_energy -0.05 </code> <br/>
<code> fix_modify AtC set reference_potential_energy myPEvalues </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Used to set various quantities for the post-processing algorithms. It sets the zero point for the potential energy density using the value provided for all nodes, or from the current configuration of the lattice if no value is provided, or values provided within the specified filename. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<p>Must be used with the hardy/field type of AtC fix ( see <a class="el" href="man_fix_atc.html">fix atc command</a> ) </p>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>Must be used with the hardy/field type of AtC fix ( see <a class="el" href="../../fix_atc.html">fix atc command</a> ) </p>
<h4><a class="anchor" id="related">
related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
<p>Defaults to lammps zero point i.e. isolated atoms </p>
</div>
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<h1><a class="anchor" id="man_source">fix_modify AtC source </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_source">fix_modify AtC source </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC source &lt;field&gt; &lt;element_set&gt; &lt;value | function&gt;</p>
<ul>
<li>&lt;field&gt; = field name valid for type of physics</li>
<li>&lt;element_set&gt; = name of set of elements </li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify atc source temperature middle temporal_ramp 10. 0. </code> </p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Add domain sources to the mesh. The units are consistent with LAMMPS's units for mass, length and time and are defined by the PDE being solved, e.g. for thermal transfer the balance equation is for energy and source is energy per time. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>keyword 'all' reserved in element_set name </p>
<h2><a class="anchor" id="related">
related</a></h2>
<h4><a class="anchor" id="related">
related</a></h4>
<p>see <a class="el" href="man_remove_source.html">fix_modify AtC remove_source</a> </p>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="default">
default</a></h4>
<p>none </p>
</div>
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<div class="contents">
<h1><a class="anchor" id="man_source_integration">fix_modify AtC source_integration </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_source_integration">fix_modify AtC source_integration </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC source_integration &lt; fe | atom&gt; </p>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify atc source_integration atom </code> </p>
<h2><a class="anchor" id="description">
description</a></h2>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<h4><a class="anchor" id="related">
related</a></h4>
<h4><a class="anchor" id="default">
default</a></h4>
<p>Default is fe </p>
</div>
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<a href="../../Manual.html">LAMMPS Manual</a> &nbsp; &nbsp;
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<div class="contents">
<h1><a class="anchor" id="man_temperature_definition">fix_modify AtC temperature_definition </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_temperature_definition">fix_modify AtC temperature_definition </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC temperature_definition &lt;kinetic|total&gt;</p>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify atc temperature_definition kinetic </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Change the definition for the atomic temperature used to create the finite element temperature. The kinetic option is based only on the kinetic energy of the atoms while the total option uses the total energy (kinetic + potential) of an atom.</p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>This command is only valid when using thermal coupling. Also, while not a formal restriction, the user should ensure that associating a potential energy with each atom makes physical sense for the total option to be meaningful.</p>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="default">
default</a></h4>
<p>kinetic </p>
</div>
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@ -7,24 +7,22 @@
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<center>
<a href="http://lammps.sandia.gov">LAMMPS Website</a> &nbsp; &nbsp;
<a href="../../Manual.html">LAMMPS Manual</a> &nbsp; &nbsp;
<a href="../../fix_atc.html">USER-AtC Manual</a> &nbsp; &nbsp;
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<div class="contents">
<h1><a class="anchor" id="man_thermal_time_integration">fix_modify AtC time_integration (thermal) </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_thermal_time_integration">fix_modify AtC time_integration (thermal) </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC time_integration &lt;descriptor&gt; <br/>
</p>
<ul>
@ -33,23 +31,23 @@ syntax</a></h2>
</ul>
<p>various time integration methods for the finite elements<br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>gear - atomic velocity update with 2nd order Verlet, nodal temperature update with 3rd or 4th order Gear, thermostats based on controlling power <br/>
fractional_step - atomic velocity update with 2nd order Verlet, mixed nodal temperature update, 3/4 Gear for continuum and 2 Verlet for atomic contributions, thermostats based on controlling discrete energy changes<br/>
</p>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify atc time_integration gear </code> <br/>
<code> fix_modify atc time_integration fractional_step </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h2><a class="anchor" id="related">
related</a></h2>
<p>see <a class="el" href="man_fix_atc.html">fix atc command</a> </p>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<h4><a class="anchor" id="related">
related</a></h4>
<p>see <a class="el" href="../../fix_atc.html">fix atc command</a> </p>
<h4><a class="anchor" id="default">
default</a></h4>
<p>none </p>
</div>
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@ -7,24 +7,22 @@
<link href="doxygen.css" rel="stylesheet" type="text/css"/>
</head>
<body>
<center>
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<a href="../../Manual.html">LAMMPS Manual</a> &nbsp; &nbsp;
<a href="../../fix_atc.html">USER-AtC Manual</a> &nbsp; &nbsp;
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<div class="contents">
<h1><a class="anchor" id="man_time_filter">fix_modify AtC filter </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_time_filter">fix_modify AtC filter </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC filter &lt;on | off | equilibrate&gt; <br/>
</p>
<ul>
@ -32,22 +30,22 @@ syntax</a></h2>
</li>
<li>equilibrate = runs dynamics without filtering but initializes filtered quantities </li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify atc transfer filter on </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Filters the MD dynamics to construct a more appropriate continuous field. Equilibrating first filters the time derivatives without changing the dynamics to provide a better initial condition to the filtered dynamics</p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>only for be used with specific transfers: thermal, two_temperature</p>
<h2><a class="anchor" id="related">
related</a></h2>
<h4><a class="anchor" id="related">
related</a></h4>
<p><a class="el" href="man_filter_scale.html">fix_modify AtC filter scale</a> <br/>
<a class="el" href="man_equilibrium_start.html">fix_modify AtC equilibrium_start</a></p>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="default">
default</a></h4>
<p>off </p>
</div>
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<div class="contents">
<h1><a class="anchor" id="man_track_displacement">fix_modify AtC track_displacement </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_track_displacement">fix_modify AtC track_displacement </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC track_displacement &lt;on/off&gt; <br/>
</p>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify atc track_displacement on </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Determines whether displacement is tracked or not. For solids problems this is a useful quantity, but for fluids it is not relevant. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>Some constitutive models require the displacement field </p>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="default">
default</a></h4>
<p>on </p>
</div>
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<div class="contents">
<h1><a class="anchor" id="man_unfix_flux">fix_modify AtC unfix_flux </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_unfix_flux">fix_modify AtC unfix_flux </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC fix_flux &lt;field&gt; &lt;face_set&gt; &lt;value | function&gt;</p>
<ul>
<li>&lt;field&gt; = field name valid for type of physics, temperature | electron_temperature</li>
<li>&lt;face_set&gt; = name of set of element faces </li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify atc unfix_flux temperature faceSet </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Command for removing prescribed normal fluxes e.g. heat_flux, stress. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h2><a class="anchor" id="related">
related</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<h4><a class="anchor" id="related">
related</a></h4>
<p>see <a class="el" href="man_unfix_flux.html">fix_modify AtC unfix_flux</a> </p>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="default">
default</a></h4>
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<div class="contents">
<h1><a class="anchor" id="man_unfix_nodes">fix_modify AtC unfix </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_unfix_nodes">fix_modify AtC unfix </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC unfix &lt;field&gt; &lt;nodeset&gt;</p>
<ul>
<li>&lt;field&gt; = field name valid for type of physics</li>
<li>&lt;nodeset&gt; = name of set of nodes </li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC unfix temperature groupNAME </code> </p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Removes constraint on field values for specified nodes. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>keyword 'all' reserved in nodeset name </p>
<h2><a class="anchor" id="related">
related</a></h2>
<h4><a class="anchor" id="related">
related</a></h4>
<p>see <a class="el" href="man_fix_nodes.html">fix_modify AtC fix</a> </p>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="default">
default</a></h4>
<p>none </p>
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<h1><a class="anchor" id="man_write_atom_weights">fix_modify AtC write_atom_weights </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_write_atom_weights">fix_modify AtC write_atom_weights </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC write_atom_weights &lt;filename&gt; &lt;frequency&gt;</p>
<ul>
<li>&lt;filename&gt; = name of file that atomic weights are written to <br/>
@ -32,19 +30,19 @@ syntax</a></h2>
<li>&lt;frequency&gt; = how often writes will occur <br/>
</li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify atc write_atom_weights atm_wt_file.txt 10 </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Command for writing the values of atomic weights to a specified file. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<h4><a class="anchor" id="related">
related</a></h4>
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default</a></h4>
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<h1><a class="anchor" id="man_write_restart">fix_modify AtC write_restart </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<h3><a class="anchor" id="man_write_restart">fix_modify AtC write_restart </a></h3><h4><a class="anchor" id="syntax">
syntax</a></h4>
<p>fix_modify AtC write_restart [file_name] <br/>
</p>
<h2><a class="anchor" id="examples">
examples</a></h2>
<h4><a class="anchor" id="examples">
examples</a></h4>
<p><code> fix_modify AtC write_restart restart.mydata </code> <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h4><a class="anchor" id="description">
description</a></h4>
<p>Dumps the current state of the fields to a named text-based restart file. This done when the command is invoked and not repeated, unlike the similar lammps command. </p>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<h4><a class="anchor" id="restrictions">
restrictions</a></h4>
<p>The restart file only contains fields and their time derivatives. The reference positions of the atoms and the commands that initialize the fix are not saved e.g. an identical mesh containing the same atoms will have to be recreated. </p>
<h2><a class="anchor" id="related">
related</a></h2>
<h4><a class="anchor" id="related">
related</a></h4>
<p>see read_restart <a class="el" href="man_read_restart.html">fix_modify AtC read_restart</a> </p>
<h2><a class="anchor" id="default">
default</a></h2>
<h4><a class="anchor" id="default">
default</a></h4>
<p>none </p>
</div>
<hr size="1"/><address style="text-align: right;"><small>Generated on 21 Aug 2013 for ATC by&nbsp;

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@ -78,7 +78,7 @@ order of operations compared to LAMMPS without acceleration:
Neighbor lists can be created in a different order :ulb,l
Bins used for sorting atoms can be oriented differently :l
The default stencil order for PPPM is 7. By default, LAMMPS will
calculate other PPPM parameters to fit the desired acuracy with
calculate other PPPM parameters to fit the desired accuracy with
this order :l
The {newton} setting applies to all atoms, not just atoms shared
between MPI tasks :l

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@ -11,336 +11,346 @@
5.3.3 KOKKOS package :h5
The KOKKOS package was developed primarily by Christian Trott (Sandia)
with contributions of various styles by others, including Sikandar
Mashayak (UIUC), Stan Moore (Sandia), and Ray Shan (Sandia). The
underlying Kokkos library was written primarily by Carter Edwards,
Kokkos is a templated C++ library that provides abstractions to allow
a single implementation of an application kernel (e.g. a pair style) to run efficiently on
different kinds of hardware, such as GPUs, Intel Xeon Phis, or many-core
CPUs. Kokkos maps the C++ kernel onto different backend languages such as CUDA, OpenMP, or Pthreads.
The Kokkos library also provides data abstractions to adjust (at
compile time) the memory layout of data structures like 2d and
3d arrays to optimize performance on different hardware. For more information on Kokkos, see
"Github"_https://github.com/kokkos/kokkos. Kokkos is part of
"Trilinos"_http://trilinos.sandia.gov/packages/kokkos. The Kokkos library was written primarily by Carter Edwards,
Christian Trott, and Dan Sunderland (all Sandia).
The KOKKOS package contains versions of pair, fix, and atom styles
The LAMMPS KOKKOS package contains versions of pair, fix, and atom styles
that use data structures and macros provided by the Kokkos library,
which is included with LAMMPS in lib/kokkos.
The Kokkos library is part of
"Trilinos"_http://trilinos.sandia.gov/packages/kokkos and can also be
downloaded from "Github"_https://github.com/kokkos/kokkos. Kokkos is a
templated C++ library that provides two key abstractions for an
application like LAMMPS. First, it allows a single implementation of
an application kernel (e.g. a pair style) to run efficiently on
different kinds of hardware, such as a GPU, Intel Phi, or many-core
CPU.
The Kokkos library also provides data abstractions to adjust (at
compile time) the memory layout of basic data structures like 2d and
3d arrays and allow the transparent utilization of special hardware
load and store operations. Such data structures are used in LAMMPS to
store atom coordinates or forces or neighbor lists. The layout is
chosen to optimize performance on different platforms. Again this
functionality is hidden from the developer, and does not affect how
the kernel is coded.
These abstractions are set at build time, when LAMMPS is compiled with
the KOKKOS package installed. All Kokkos operations occur within the
context of an individual MPI task running on a single node of the
machine. The total number of MPI tasks used by LAMMPS (one or
multiple per compute node) is set in the usual manner via the mpirun
or mpiexec commands, and is independent of Kokkos.
which is included with LAMMPS in /lib/kokkos. The KOKKOS package was developed primarily by Christian Trott (Sandia)
and Stan Moore (Sandia) with contributions of various styles by others, including Sikandar
Mashayak (UIUC), Ray Shan (Sandia), and Dan Ibanez (Sandia). For more information on developing using Kokkos abstractions
see the Kokkos programmers' guide at /lib/kokkos/doc/Kokkos_PG.pdf.
Kokkos currently provides support for 3 modes of execution (per MPI
task). These are OpenMP (for many-core CPUs), Cuda (for NVIDIA GPUs),
and OpenMP (for Intel Phi). Note that the KOKKOS package supports
running on the Phi in native mode, not offload mode like the
USER-INTEL package supports. You choose the mode at build time to
task). These are Serial (MPI-only for CPUs and Intel Phi), OpenMP (threading
for many-core CPUs and Intel Phi), and CUDA (for NVIDIA GPUs). You choose the mode at build time to
produce an executable compatible with specific hardware.
Here is a quick overview of how to use the KOKKOS package
for CPU acceleration, assuming one or more 16-core nodes.
More details follow.
use a C++11 compatible compiler
make yes-kokkos
make mpi KOKKOS_DEVICES=OpenMP # build with the KOKKOS package
make kokkos_omp # or Makefile.kokkos_omp already has variable set :pre
mpirun -np 16 lmp_mpi -k on -sf kk -in in.lj # 1 node, 16 MPI tasks/node, no threads
mpirun -np 2 -ppn 1 lmp_mpi -k on t 16 -sf kk -in in.lj # 2 nodes, 1 MPI task/node, 16 threads/task
mpirun -np 2 lmp_mpi -k on t 8 -sf kk -in in.lj # 1 node, 2 MPI tasks/node, 8 threads/task
mpirun -np 32 -ppn 4 lmp_mpi -k on t 4 -sf kk -in in.lj # 8 nodes, 4 MPI tasks/node, 4 threads/task :pre
specify variables and settings in your Makefile.machine that enable OpenMP, GPU, or Phi support
include the KOKKOS package and build LAMMPS
enable the KOKKOS package and its hardware options via the "-k on" command-line switch use KOKKOS styles in your input script :ul
Here is a quick overview of how to use the KOKKOS package for GPUs,
assuming one or more nodes, each with 16 cores and a GPU. More
details follow.
discuss use of NVCC, which Makefiles to examine
use a C++11 compatible compiler
KOKKOS_DEVICES = Cuda, OpenMP
KOKKOS_ARCH = Kepler35
make yes-kokkos
make machine :pre
mpirun -np 1 lmp_cuda -k on t 6 -sf kk -in in.lj # one MPI task, 6 threads on CPU
mpirun -np 4 -ppn 1 lmp_cuda -k on t 6 -sf kk -in in.lj # ditto on 4 nodes :pre
mpirun -np 2 lmp_cuda -k on t 8 g 2 -sf kk -in in.lj # two MPI tasks, 8 threads per CPU
mpirun -np 32 -ppn 2 lmp_cuda -k on t 8 g 2 -sf kk -in in.lj # ditto on 16 nodes :pre
Here is a quick overview of how to use the KOKKOS package
for the Intel Phi:
use a C++11 compatible compiler
KOKKOS_DEVICES = OpenMP
KOKKOS_ARCH = KNC
make yes-kokkos
make machine :pre
host=MIC, Intel Phi with 61 cores (240 threads/phi via 4x hardware threading):
mpirun -np 1 lmp_g++ -k on t 240 -sf kk -in in.lj # 1 MPI task on 1 Phi, 1*240 = 240
mpirun -np 30 lmp_g++ -k on t 8 -sf kk -in in.lj # 30 MPI tasks on 1 Phi, 30*8 = 240
mpirun -np 12 lmp_g++ -k on t 20 -sf kk -in in.lj # 12 MPI tasks on 1 Phi, 12*20 = 240
mpirun -np 96 -ppn 12 lmp_g++ -k on t 20 -sf kk -in in.lj # ditto on 8 Phis :pre
[Required hardware/software:]
Kokkos support within LAMMPS must be built with a C++11 compatible
compiler. If using gcc, version 4.7.2 or later is required.
To build with Kokkos support for CPUs, your compiler must support the
OpenMP interface. You should have one or more multi-core CPUs so that
multiple threads can be launched by each MPI task running on a CPU.
To build with Kokkos support for NVIDIA GPUs, NVIDIA CUDA software
version 7.5 or later must be installed on your system. See the
discussion for the "GPU"_accelerate_gpu.html package for details of
how to check and do this.
NOTE: For good performance of the KOKKOS package on GPUs, you must
have Kepler generation GPUs (or later). The Kokkos library exploits
texture cache options not supported by Telsa generation GPUs (or
older).
To build with Kokkos support for Intel Xeon Phi coprocessors, your
sysmte must be configured to use them in "native" mode, not "offload"
mode like the USER-INTEL package supports.
[Building LAMMPS with the KOKKOS package:]
You must choose at build time whether to build for CPUs (OpenMP),
GPUs, or Phi.
NOTE: Kokkos support within LAMMPS must be built with a C++11 compatible
compiler. This means GCC version 4.7.2 or later, Intel 14.0.4 or later, or
Clang 3.5.2 or later is required.
You can do any of these in one line, using the suitable make command
line flags as described in "Section 4"_Section_packages.html of the
manual. If run from the src directory, these
commands will create src/lmp_kokkos_omp, lmp_kokkos_cuda_mpi, and
lmp_kokkos_phi. Note that the OMP and PHI options use
src/MAKE/Makefile.mpi as the starting Makefile.machine. The CUDA
option uses src/MAKE/OPTIONS/Makefile.kokkos_cuda_mpi.
The recommended method of building the KOKKOS package is to start with the provided Kokkos
Makefiles in /src/MAKE/OPTIONS/. You may need to modify the KOKKOS_ARCH variable in the Makefile
to match your specific hardware. For example:
The latter two steps can be done using the "-k on", "-pk kokkos" and
"-sf kk" "command-line switches"_Section_start.html#start_6
respectively. Or the effect of the "-pk" or "-sf" switches can be
duplicated by adding the "package kokkos"_package.html or "suffix
kk"_suffix.html commands respectively to your input script.
for Sandy Bridge CPUs, set KOKKOS_ARCH=SNB
for Broadwell CPUs, set KOKKOS_ARCH=BWD
for K80 GPUs, set KOKKOS_ARCH=Kepler37
for P100 GPUs and Power8 CPUs, set KOKKOS_ARCH=Pascal60,Power8 :ul
See the [Advanced Kokkos Options] section below for a listing of all KOKKOS_ARCH options.
Or you can follow these steps:
[Compile for CPU-only (MPI only, no threading):]
CPU-only (run all-MPI or with OpenMP threading):
cd lammps/src
make yes-kokkos
make kokkos_omp :pre
CPU-only (only MPI, no threading):
use a C++11 compatible compiler and set KOKKOS_ARCH variable in
/src/MAKE/OPTIONS/Makefile.kokkos_mpi_only as described above. Then do the
following:
cd lammps/src
make yes-kokkos
make kokkos_mpi_only :pre
Intel Xeon Phi (Intel Compiler, Intel MPI):
[Compile for CPU-only (MPI plus OpenMP threading):]
NOTE: To build with Kokkos support for OpenMP threading, your compiler must support the
OpenMP interface. You should have one or more multi-core CPUs so that
multiple threads can be launched by each MPI task running on a CPU.
use a C++11 compatible compiler and set KOKKOS_ARCH variable in
/src/MAKE/OPTIONS/Makefile.kokkos_omp as described above. Then do the
following:
cd lammps/src
make yes-kokkos
make kokkos_omp :pre
[Compile for Intel KNL Xeon Phi (Intel Compiler, OpenMPI):]
use a C++11 compatible compiler and do the following:
cd lammps/src
make yes-kokkos
make kokkos_phi :pre
CPUs and GPUs (with MPICH or OpenMPI):
[Compile for CPUs and GPUs (with OpenMPI or MPICH):]
NOTE: To build with Kokkos support for NVIDIA GPUs, NVIDIA CUDA software
version 7.5 or later must be installed on your system. See the
discussion for the "GPU"_accelerate_gpu.html package for details of
how to check and do this.
use a C++11 compatible compiler and set KOKKOS_ARCH variable in
/src/MAKE/OPTIONS/Makefile.kokkos_cuda_mpi for both GPU and CPU as described
above. Then do the following:
cd lammps/src
make yes-kokkos
make kokkos_cuda_mpi :pre
These examples set the KOKKOS-specific OMP, MIC, CUDA variables on the
make command line which requires a GNU-compatible make command. Try
[Alternative Methods of Compiling:]
Alternatively, the KOKKOS package can be built by specifying Kokkos variables
on the make command line. For example:
make mpi KOKKOS_DEVICES=OpenMP KOKKOS_ARCH=SNB # set the KOKKOS_DEVICES and KOKKOS_ARCH variable explicitly
make kokkos_cuda_mpi KOKKOS_ARCH=Pascal60,Power8 # set the KOKKOS_ARCH variable explicitly :pre
Setting the KOKKOS_DEVICES and KOKKOS_ARCH variables on the
make command line requires a GNU-compatible make command. Try
"gmake" if your system's standard make complains.
NOTE: If you build using make line variables and re-build LAMMPS twice
with different KOKKOS options and the *same* target, e.g. g++ in the
first two examples above, then you *must* perform a "make clean-all"
or "make clean-machine" before each build. This is to force all the
with different KOKKOS options and the *same* target, then you *must* perform a "make clean-all"
or "make clean-machine" before each build. This is to force all the
KOKKOS-dependent files to be re-compiled with the new options.
NOTE: Currently, there are no precision options with the KOKKOS
package. All compilation and computation is performed in double
precision.
[Running LAMMPS with the KOKKOS package:]
There are other allowed options when building with the KOKKOS package.
As above, they can be set either as variables on the make command line
or in Makefile.machine. This is the full list of options, including
those discussed above, Each takes a value shown below. The
default value is listed, which is set in the
lib/kokkos/Makefile.kokkos file.
All Kokkos operations occur within the
context of an individual MPI task running on a single node of the
machine. The total number of MPI tasks used by LAMMPS (one or
multiple per compute node) is set in the usual manner via the mpirun
or mpiexec commands, and is independent of Kokkos. E.g. the mpirun
command in OpenMPI does this via its
-np and -npernode switches. Ditto for MPICH via -np and -ppn.
#Default settings specific options
#Options: force_uvm,use_ldg,rdc
[Running on a multi-core CPU:]
KOKKOS_DEVICES, values = {OpenMP}, {Serial}, {Pthreads}, {Cuda}, default = {OpenMP}
KOKKOS_ARCH, values = {KNC}, {SNB}, {HSW}, {Kepler}, {Kepler30}, {Kepler32}, {Kepler35}, {Kepler37}, {Maxwell}, {Maxwell50}, {Maxwell52}, {Maxwell53}, {ARMv8}, {BGQ}, {Power7}, {Power8}, default = {none}
KOKKOS_DEBUG, values = {yes}, {no}, default = {no}
KOKKOS_USE_TPLS, values = {hwloc}, {librt}, default = {none}
KOKKOS_CUDA_OPTIONS, values = {force_uvm}, {use_ldg}, {rdc} :ul
Here is a quick overview of how to use the KOKKOS package
for CPU acceleration, assuming one or more 16-core nodes.
KOKKOS_DEVICE sets the parallelization method used for Kokkos code
(within LAMMPS). KOKKOS_DEVICES=OpenMP means that OpenMP will be
used. KOKKOS_DEVICES=Pthreads means that pthreads will be used.
KOKKOS_DEVICES=Cuda means an NVIDIA GPU running CUDA will be used.
If KOKKOS_DEVICES=Cuda, then the lo-level Makefile in the src/MAKE
directory must use "nvcc" as its compiler, via its CC setting. For
best performance its CCFLAGS setting should use -O3 and have a
KOKKOS_ARCH setting that matches the compute capability of your NVIDIA
hardware and software installation, e.g. KOKKOS_ARCH=Kepler30. Note
the minimal required compute capability is 2.0, but this will give
significantly reduced performance compared to Kepler generation GPUs
with compute capability 3.x. For the LINK setting, "nvcc" should not
be used; instead use g++ or another compiler suitable for linking C++
applications. Often you will want to use your MPI compiler wrapper
for this setting (i.e. mpicxx). Finally, the lo-level Makefile must
also have a "Compilation rule" for creating *.o files from *.cu files.
See src/Makefile.cuda for an example of a lo-level Makefile with all
of these settings.
KOKKOS_USE_TPLS=hwloc binds threads to hardware cores, so they do not
migrate during a simulation. KOKKOS_USE_TPLS=hwloc should always be
used if running with KOKKOS_DEVICES=Pthreads for pthreads. It is not
necessary for KOKKOS_DEVICES=OpenMP for OpenMP, because OpenMP
provides alternative methods via environment variables for binding
threads to hardware cores. More info on binding threads to cores is
given in "Section 5.3"_Section_accelerate.html#acc_3.
KOKKOS_ARCH=KNC enables compiler switches needed when compiling for an
Intel Phi processor.
KOKKOS_USE_TPLS=librt enables use of a more accurate timer mechanism
on most Unix platforms. This library is not available on all
platforms.
KOKKOS_DEBUG is only useful when developing a Kokkos-enabled style
within LAMMPS. KOKKOS_DEBUG=yes enables printing of run-time
debugging information that can be useful. It also enables runtime
bounds checking on Kokkos data structures.
KOKKOS_CUDA_OPTIONS are additional options for CUDA.
For more information on Kokkos see the Kokkos programmers' guide here:
/lib/kokkos/doc/Kokkos_PG.pdf.
[Run with the KOKKOS package from the command line:]
The mpirun or mpiexec command sets the total number of MPI tasks used
by LAMMPS (one or multiple per compute node) and the number of MPI
tasks used per node. E.g. the mpirun command in MPICH does this via
its -np and -ppn switches. Ditto for OpenMPI via -np and -npernode.
When using KOKKOS built with host=OMP, you need to choose how many
OpenMP threads per MPI task will be used (via the "-k" command-line
switch discussed below). Note that the product of MPI tasks * OpenMP
threads/task should not exceed the physical number of cores (on a
node), otherwise performance will suffer.
When using the KOKKOS package built with device=CUDA, you must use
exactly one MPI task per physical GPU.
When using the KOKKOS package built with host=MIC for Intel Xeon Phi
coprocessor support you need to insure there are one or more MPI tasks
per coprocessor, and choose the number of coprocessor threads to use
per MPI task (via the "-k" command-line switch discussed below). The
product of MPI tasks * coprocessor threads/task should not exceed the
maximum number of threads the coprocessor is designed to run,
otherwise performance will suffer. This value is 240 for current
generation Xeon Phi(TM) chips, which is 60 physical cores * 4
threads/core. Note that with the KOKKOS package you do not need to
specify how many Phi coprocessors there are per node; each
coprocessors is simply treated as running some number of MPI tasks.
mpirun -np 16 lmp_kokkos_mpi_only -k on -sf kk -in in.lj # 1 node, 16 MPI tasks/node, no multi-threading
mpirun -np 2 -ppn 1 lmp_kokkos_omp -k on t 16 -sf kk -in in.lj # 2 nodes, 1 MPI task/node, 16 threads/task
mpirun -np 2 lmp_kokkos_omp -k on t 8 -sf kk -in in.lj # 1 node, 2 MPI tasks/node, 8 threads/task
mpirun -np 32 -ppn 4 lmp_kokkos_omp -k on t 4 -sf kk -in in.lj # 8 nodes, 4 MPI tasks/node, 4 threads/task :pre
To run using the KOKKOS package, use the "-k on", "-sf kk" and "-pk kokkos" "command-line switches"_Section_start.html#start_7 in your mpirun command.
You must use the "-k on" "command-line
switch"_Section_start.html#start_6 to enable the KOKKOS package. It
switch"_Section_start.html#start_7 to enable the KOKKOS package. It
takes additional arguments for hardware settings appropriate to your
system. Those arguments are "documented
here"_Section_start.html#start_6. The two most commonly used
options are:
system. Those arguments are "documented
here"_Section_start.html#start_7. For OpenMP use:
-k on t Nt g Ng :pre
The "t Nt" option applies to host=OMP (even if device=CUDA) and
host=MIC. For host=OMP, it specifies how many OpenMP threads per MPI
task to use with a node. For host=MIC, it specifies how many Xeon Phi
threads per MPI task to use within a node. The default is Nt = 1.
Note that for host=OMP this is effectively MPI-only mode which may be
fine. But for host=MIC you will typically end up using far less than
all the 240 available threads, which could give very poor performance.
The "g Ng" option applies to device=CUDA. It specifies how many GPUs
per compute node to use. The default is 1, so this only needs to be
specified is you have 2 or more GPUs per compute node.
-k on t Nt :pre
The "t Nt" option specifies how many OpenMP threads per MPI
task to use with a node. The default is Nt = 1, which is MPI-only mode.
Note that the product of MPI tasks * OpenMP
threads/task should not exceed the physical number of cores (on a
node), otherwise performance will suffer. If hyperthreading is enabled, then
the product of MPI tasks * OpenMP threads/task should not exceed the
physical number of cores * hardware threads.
The "-k on" switch also issues a "package kokkos" command (with no
additional arguments) which sets various KOKKOS options to default
values, as discussed on the "package"_package.html command doc page.
Use the "-sf kk" "command-line switch"_Section_start.html#start_6,
which will automatically append "kk" to styles that support it. Use
the "-pk kokkos" "command-line switch"_Section_start.html#start_6 if
you wish to change any of the default "package kokkos"_package.html
optionns set by the "-k on" "command-line
switch"_Section_start.html#start_6.
The "-sf kk" "command-line switch"_Section_start.html#start_7
will automatically append the "/kk" suffix to styles that support it.
In this manner no modification to the input script is needed. Alternatively,
one can run with the KOKKOS package by editing the input script as described below.
Note that the default for the "package kokkos"_package.html command is
NOTE: The default for the "package kokkos"_package.html command is
to use "full" neighbor lists and set the Newton flag to "off" for both
pairwise and bonded interactions. This typically gives fastest
performance. If the "newton"_newton.html command is used in the input
script, it can override the Newton flag defaults.
However, when running in MPI-only mode with 1 thread per MPI task, it
pairwise and bonded interactions. However, when running on CPUs, it
will typically be faster to use "half" neighbor lists and set the
Newton flag to "on", just as is the case for non-accelerated pair
styles. You can do this with the "-pk" "command-line
switch"_Section_start.html#start_6.
styles. It can also be faster to use non-threaded communication.
Use the "-pk kokkos" "command-line switch"_Section_start.html#start_7 to
change the default "package kokkos"_package.html
options. See its doc page for details and default settings. Experimenting with
its options can provide a speed-up for specific calculations. For example:
[Or run with the KOKKOS package by editing an input script:]
mpirun -np 16 lmp_kokkos_mpi_only -k on -sf kk -pk kokkos newton on neigh half comm no -in in.lj # Newton on, Half neighbor list, non-threaded comm :pre
The discussion above for the mpirun/mpiexec command and setting
appropriate thread and GPU values for host=OMP or host=MIC or
device=CUDA are the same.
If the "newton"_newton.html command is used in the input
script, it can also override the Newton flag defaults.
[Core and Thread Affinity:]
When using multi-threading, it is important for
performance to bind both MPI tasks to physical cores, and threads to
physical cores, so they do not migrate during a simulation.
If you are not certain MPI tasks are being bound (check the defaults
for your MPI installation), binding can be forced with these flags:
OpenMPI 1.8: mpirun -np 2 --bind-to socket --map-by socket ./lmp_openmpi ...
Mvapich2 2.0: mpiexec -np 2 --bind-to socket --map-by socket ./lmp_mvapich ... :pre
For binding threads with KOKKOS OpenMP, use thread affinity
environment variables to force binding. With OpenMP 3.1 (gcc 4.7 or
later, intel 12 or later) setting the environment variable
OMP_PROC_BIND=true should be sufficient. In general, for best performance
with OpenMP 4.0 or better set OMP_PROC_BIND=spread and OMP_PLACES=threads.
For binding threads with the
KOKKOS pthreads option, compile LAMMPS the KOKKOS HWLOC=yes option
as described below.
[Running on Knight's Landing (KNL) Intel Xeon Phi:]
Here is a quick overview of how to use the KOKKOS package
for the Intel Knight's Landing (KNL) Xeon Phi:
KNL Intel Phi chips have 68 physical cores. Typically 1 to 4 cores
are reserved for the OS, and only 64 or 66 cores are used. Each core
has 4 hyperthreads,so there are effectively N = 256 (4*64) or
N = 264 (4*66) cores to run on. The product of MPI tasks * OpenMP threads/task should not exceed this limit,
otherwise performance will suffer. Note that with the KOKKOS package you do not need to
specify how many KNLs there are per node; each
KNL is simply treated as running some number of MPI tasks.
Examples of mpirun commands that follow these rules are shown below.
Intel KNL node with 68 cores (272 threads/node via 4x hardware threading):
mpirun -np 64 lmp_kokkos_phi -k on t 4 -sf kk -in in.lj # 1 node, 64 MPI tasks/node, 4 threads/task
mpirun -np 66 lmp_kokkos_phi -k on t 4 -sf kk -in in.lj # 1 node, 66 MPI tasks/node, 4 threads/task
mpirun -np 32 lmp_kokkos_phi -k on t 8 -sf kk -in in.lj # 1 node, 32 MPI tasks/node, 8 threads/task
mpirun -np 512 -ppn 64 lmp_kokkos_phi -k on t 4 -sf kk -in in.lj # 8 nodes, 64 MPI tasks/node, 4 threads/task :pre
The -np setting of the mpirun command sets the number of MPI
tasks/node. The "-k on t Nt" command-line switch sets the number of
threads/task as Nt. The product of these two values should be N, i.e.
256 or 264.
NOTE: The default for the "package kokkos"_package.html command is
to use "full" neighbor lists and set the Newton flag to "off" for both
pairwise and bonded interactions. When running on KNL, this
will typically be best for pair-wise potentials. For manybody potentials,
using "half" neighbor lists and setting the
Newton flag to "on" may be faster. It can also be faster to use non-threaded communication.
Use the "-pk kokkos" "command-line switch"_Section_start.html#start_7 to
change the default "package kokkos"_package.html
options. See its doc page for details and default settings. Experimenting with
its options can provide a speed-up for specific calculations. For example:
mpirun -np 64 lmp_kokkos_phi -k on t 4 -sf kk -pk kokkos comm no -in in.lj # Newton off, full neighbor list, non-threaded comm
mpirun -np 64 lmp_kokkos_phi -k on t 4 -sf kk -pk kokkos newton on neigh half comm no -in in.reax # Newton on, half neighbor list, non-threaded comm :pre
NOTE: MPI tasks and threads should be bound to cores as described above for CPUs.
NOTE: To build with Kokkos support for Intel Xeon Phi coprocessors such as Knight's Corner (KNC), your
system must be configured to use them in "native" mode, not "offload"
mode like the USER-INTEL package supports.
[Running on GPUs:]
Use the "-k" "command-line switch"_Section_commands.html#start_7 to
specify the number of GPUs per node. Typically the -np setting
of the mpirun command should set the number of MPI
tasks/node to be equal to the # of physical GPUs on the node.
You can assign multiple MPI tasks to the same GPU with the
KOKKOS package, but this is usually only faster if significant portions
of the input script have not been ported to use Kokkos. Using CUDA MPS
is recommended in this scenario. As above for multi-core CPUs (and no GPU), if N is the number
of physical cores/node, then the number of MPI tasks/node should not exceed N.
-k on g Ng :pre
Here are examples of how to use the KOKKOS package for GPUs,
assuming one or more nodes, each with two GPUs:
mpirun -np 2 lmp_kokkos_cuda_openmpi -k on g 2 -sf kk -in in.lj # 1 node, 2 MPI tasks/node, 2 GPUs/node
mpirun -np 32 -ppn 2 lmp_kokkos_cuda_openmpi -k on g 2 -sf kk -in in.lj # 16 nodes, 2 MPI tasks/node, 2 GPUs/node (32 GPUs total) :pre
NOTE: The default for the "package kokkos"_package.html command is
to use "full" neighbor lists and set the Newton flag to "off" for both
pairwise and bonded interactions, along with threaded communication.
When running on Maxwell or Kepler GPUs, this will typically be best. For Pascal GPUs,
using "half" neighbor lists and setting the
Newton flag to "on" may be faster. For many pair styles, setting the neighbor binsize
equal to the ghost atom cutoff will give speedup.
Use the "-pk kokkos" "command-line switch"_Section_start.html#start_7 to
change the default "package kokkos"_package.html
options. See its doc page for details and default settings. Experimenting with
its options can provide a speed-up for specific calculations. For example:
mpirun -np 2 lmp_kokkos_cuda_openmpi -k on g 2 -sf kk -pk kokkos binsize 2.8 -in in.lj # Set binsize = neighbor ghost cutoff
mpirun -np 2 lmp_kokkos_cuda_openmpi -k on g 2 -sf kk -pk kokkos newton on neigh half binsize 2.8 -in in.lj # Newton on, half neighborlist, set binsize = neighbor ghost cutoff :pre
NOTE: For good performance of the KOKKOS package on GPUs, you must
have Kepler generation GPUs (or later). The Kokkos library exploits
texture cache options not supported by Telsa generation GPUs (or
older).
NOTE: When using a GPU, you will achieve the best performance if your
input script does not use fix or compute styles which are not yet
Kokkos-enabled. This allows data to stay on the GPU for multiple
timesteps, without being copied back to the host CPU. Invoking a
non-Kokkos fix or compute, or performing I/O for
"thermo"_thermo_style.html or "dump"_dump.html output will cause data
to be copied back to the CPU incurring a performance penalty.
NOTE: To get an accurate timing breakdown between time spend in pair,
kspace, etc., you must set the environment variable CUDA_LAUNCH_BLOCKING=1.
However, this will reduce performance and is not recommended for production runs.
[Run with the KOKKOS package by editing an input script:]
Alternatively the effect of the "-sf" or "-pk" switches can be
duplicated by adding the "package kokkos"_package.html or "suffix
kk"_suffix.html commands to your input script.
The discussion above for building LAMMPS with the KOKKOS package, the mpirun/mpiexec command, and setting
appropriate thread are the same.
You must still use the "-k on" "command-line
switch"_Section_start.html#start_6 to enable the KOKKOS package, and
switch"_Section_start.html#start_7 to enable the KOKKOS package, and
specify its additional arguments for hardware options appropriate to
your system, as documented above.
Use the "suffix kk"_suffix.html command, or you can explicitly add a
You can use the "suffix kk"_suffix.html command, or you can explicitly add a
"kk" suffix to individual styles in your input script, e.g.
pair_style lj/cut/kk 2.5 :pre
You only need to use the "package kokkos"_package.html command if you
wish to change any of its option defaults, as set by the "-k on"
"command-line switch"_Section_start.html#start_6.
"command-line switch"_Section_start.html#start_7.
[Using OpenMP threading and CUDA together (experimental):]
With the KOKKOS package, both OpenMP multi-threading and GPUs can be used
together in a few special cases. In the Makefile, the KOKKOS_DEVICES variable must
include both "Cuda" and "OpenMP", as is the case for /src/MAKE/OPTIONS/Makefile.kokkos_cuda_mpi
KOKKOS_DEVICES=Cuda,OpenMP :pre
The suffix "/kk" is equivalent to "/kk/device", and for Kokkos CUDA,
using the "-sf kk" in the command line gives the default CUDA version everywhere.
However, if the "/kk/host" suffix is added to a specific style in the input
script, the Kokkos OpenMP (CPU) version of that specific style will be used instead.
Set the number of OpenMP threads as "t Nt" and the number of GPUs as "g Ng"
-k on t Nt g Ng :pre
For example, the command to run with 1 GPU and 8 OpenMP threads is then:
mpiexec -np 1 lmp_kokkos_cuda_openmpi -in in.lj -k on g 1 t 8 -sf kk :pre
Conversely, if the "-sf kk/host" is used in the command line and then the
"/kk" or "/kk/device" suffix is added to a specific style in your input script,
then only that specific style will run on the GPU while everything else will
run on the CPU in OpenMP mode. Note that the execution of the CPU and GPU
styles will NOT overlap, except for a special case:
A kspace style and/or molecular topology (bonds, angles, etc.) running on
the host CPU can overlap with a pair style running on the GPU. First compile
with "--default-stream per-thread" added to CCFLAGS in the Kokkos CUDA Makefile.
Then explicitly use the "/kk/host" suffix for kspace and bonds, angles, etc.
in the input file and the "kk" suffix (equal to "kk/device") on the command line.
Also make sure the environment variable CUDA_LAUNCH_BLOCKING is not set to "1"
so CPU/GPU overlap can occur.
[Speed-ups to expect:]
@ -353,7 +363,7 @@ Generally speaking, the following rules of thumb apply:
When running on CPUs only, with a single thread per MPI task,
performance of a KOKKOS style is somewhere between the standard
(un-accelerated) styles (MPI-only mode), and those provided by the
USER-OMP package. However the difference between all 3 is small (less
USER-OMP package. However the difference between all 3 is small (less
than 20%). :ulb,l
When running on CPUs only, with multiple threads per MPI task,
@ -363,7 +373,7 @@ package. :l
When running large number of atoms per GPU, KOKKOS is typically faster
than the GPU package. :l
When running on Intel Xeon Phi, KOKKOS is not as fast as
When running on Intel hardware, KOKKOS is not as fast as
the USER-INTEL package, which is optimized for that hardware. :l
:ule
@ -371,123 +381,78 @@ See the "Benchmark page"_http://lammps.sandia.gov/bench.html of the
LAMMPS web site for performance of the KOKKOS package on different
hardware.
[Guidelines for best performance:]
[Advanced Kokkos options:]
Here are guidline for using the KOKKOS package on the different
hardware configurations listed above.
There are other allowed options when building with the KOKKOS package.
As above, they can be set either as variables on the make command line
or in Makefile.machine. This is the full list of options, including
those discussed above. Each takes a value shown below. The
default value is listed, which is set in the
/lib/kokkos/Makefile.kokkos file.
Many of the guidelines use the "package kokkos"_package.html command
See its doc page for details and default settings. Experimenting with
its options can provide a speed-up for specific calculations.
KOKKOS_DEVICES, values = {Serial}, {OpenMP}, {Pthreads}, {Cuda}, default = {OpenMP}
KOKKOS_ARCH, values = {KNC}, {SNB}, {HSW}, {Kepler30}, {Kepler32}, {Kepler35}, {Kepler37}, {Maxwell50}, {Maxwell52}, {Maxwell53}, {Pascal60}, {Pascal61}, {ARMv80}, {ARMv81}, {ARMv81}, {ARMv8-ThunderX}, {BGQ}, {Power7}, {Power8}, {Power9}, {KNL}, {BDW}, {SKX}, default = {none}
KOKKOS_DEBUG, values = {yes}, {no}, default = {no}
KOKKOS_USE_TPLS, values = {hwloc}, {librt}, {experimental_memkind}, default = {none}
KOKKOS_CXX_STANDARD, values = {c++11}, {c++1z}, default = {c++11}
KOKKOS_OPTIONS, values = {aggressive_vectorization}, {disable_profiling}, default = {none}
KOKKOS_CUDA_OPTIONS, values = {force_uvm}, {use_ldg}, {rdc}, {enable_lambda}, default = {enable_lambda} :ul
[Running on a multi-core CPU:]
KOKKOS_DEVICES sets the parallelization method used for Kokkos code
(within LAMMPS). KOKKOS_DEVICES=Serial means that no threading will be used.
KOKKOS_DEVICES=OpenMP means that OpenMP threading will be
used. KOKKOS_DEVICES=Pthreads means that pthreads will be used.
KOKKOS_DEVICES=Cuda means an NVIDIA GPU running CUDA will be used.
If N is the number of physical cores/node, then the number of MPI
tasks/node * number of threads/task should not exceed N, and should
typically equal N. Note that the default threads/task is 1, as set by
the "t" keyword of the "-k" "command-line
switch"_Section_start.html#start_6. If you do not change this, no
additional parallelism (beyond MPI) will be invoked on the host
CPU(s).
KOKKOS_ARCH enables compiler switches needed when compiling for a
specific hardware:
You can compare the performance running in different modes:
ARMv80 = ARMv8.0 Compatible CPU
ARMv81 = ARMv8.1 Compatible CPU
ARMv8-ThunderX = ARMv8 Cavium ThunderX CPU
SNB = Intel Sandy/Ivy Bridge CPUs
HSW = Intel Haswell CPUs
BDW = Intel Broadwell Xeon E-class CPUs
SKX = Intel Sky Lake Xeon E-class HPC CPUs (AVX512)
KNC = Intel Knights Corner Xeon Phi
KNL = Intel Knights Landing Xeon Phi
Kepler30 = NVIDIA Kepler generation CC 3.0
Kepler32 = NVIDIA Kepler generation CC 3.2
Kepler35 = NVIDIA Kepler generation CC 3.5
Kepler37 = NVIDIA Kepler generation CC 3.7
Maxwell50 = NVIDIA Maxwell generation CC 5.0
Maxwell52 = NVIDIA Maxwell generation CC 5.2
Maxwell53 = NVIDIA Maxwell generation CC 5.3
Pascal60 = NVIDIA Pascal generation CC 6.0
Pascal61 = NVIDIA Pascal generation CC 6.1
BGQ = IBM Blue Gene/Q CPUs
Power8 = IBM POWER8 CPUs
Power9 = IBM POWER9 CPUs :ul
run with 1 MPI task/node and N threads/task
run with N MPI tasks/node and 1 thread/task
run with settings in between these extremes :ul
KOKKOS_USE_TPLS=hwloc binds threads to hardware cores, so they do not
migrate during a simulation. KOKKOS_USE_TPLS=hwloc should always be
used if running with KOKKOS_DEVICES=Pthreads for pthreads. It is not
necessary for KOKKOS_DEVICES=OpenMP for OpenMP, because OpenMP
provides alternative methods via environment variables for binding
threads to hardware cores. More info on binding threads to cores is
given in "Section 5.3"_Section_accelerate.html#acc_3.
Examples of mpirun commands in these modes are shown above.
KOKKOS_USE_TPLS=librt enables use of a more accurate timer mechanism
on most Unix platforms. This library is not available on all
platforms.
When using KOKKOS to perform multi-threading, it is important for
performance to bind both MPI tasks to physical cores, and threads to
physical cores, so they do not migrate during a simulation.
KOKKOS_DEBUG is only useful when developing a Kokkos-enabled style
within LAMMPS. KOKKOS_DEBUG=yes enables printing of run-time
debugging information that can be useful. It also enables runtime
bounds checking on Kokkos data structures.
If you are not certain MPI tasks are being bound (check the defaults
for your MPI installation), binding can be forced with these flags:
KOKKOS_CXX_STANDARD and KOKKOS_OPTIONS are typically not changed when building LAMMPS.
OpenMPI 1.8: mpirun -np 2 -bind-to socket -map-by socket ./lmp_openmpi ...
Mvapich2 2.0: mpiexec -np 2 -bind-to socket -map-by socket ./lmp_mvapich ... :pre
For binding threads with the KOKKOS OMP option, use thread affinity
environment variables to force binding. With OpenMP 3.1 (gcc 4.7 or
later, intel 12 or later) setting the environment variable
OMP_PROC_BIND=true should be sufficient. For binding threads with the
KOKKOS pthreads option, compile LAMMPS the KOKKOS HWLOC=yes option
(see "this section"_Section_packages.html#KOKKOS of the manual for
details).
[Running on GPUs:]
Insure the -arch setting in the machine makefile you are using,
e.g. src/MAKE/Makefile.cuda, is correct for your GPU hardware/software.
(see "this section"_Section_packages.html#KOKKOS of the manual for
details).
The -np setting of the mpirun command should set the number of MPI
tasks/node to be equal to the # of physical GPUs on the node.
Use the "-k" "command-line switch"_Section_commands.html#start_6 to
specify the number of GPUs per node, and the number of threads per MPI
task. As above for multi-core CPUs (and no GPU), if N is the number
of physical cores/node, then the number of MPI tasks/node * number of
threads/task should not exceed N. With one GPU (and one MPI task) it
may be faster to use less than all the available cores, by setting
threads/task to a smaller value. This is because using all the cores
on a dual-socket node will incur extra cost to copy memory from the
2nd socket to the GPU.
Examples of mpirun commands that follow these rules are shown above.
NOTE: When using a GPU, you will achieve the best performance if your
input script does not use any fix or compute styles which are not yet
Kokkos-enabled. This allows data to stay on the GPU for multiple
timesteps, without being copied back to the host CPU. Invoking a
non-Kokkos fix or compute, or performing I/O for
"thermo"_thermo_style.html or "dump"_dump.html output will cause data
to be copied back to the CPU.
You cannot yet assign multiple MPI tasks to the same GPU with the
KOKKOS package. We plan to support this in the future, similar to the
GPU package in LAMMPS.
You cannot yet use both the host (multi-threaded) and device (GPU)
together to compute pairwise interactions with the KOKKOS package. We
hope to support this in the future, similar to the GPU package in
LAMMPS.
[Running on an Intel Phi:]
Kokkos only uses Intel Phi processors in their "native" mode, i.e.
not hosted by a CPU.
As illustrated above, build LAMMPS with OMP=yes (the default) and
MIC=yes. The latter insures code is correctly compiled for the Intel
Phi. The OMP setting means OpenMP will be used for parallelization on
the Phi, which is currently the best option within Kokkos. In the
future, other options may be added.
Current-generation Intel Phi chips have either 61 or 57 cores. One
core should be excluded for running the OS, leaving 60 or 56 cores.
Each core is hyperthreaded, so there are effectively N = 240 (4*60) or
N = 224 (4*56) cores to run on.
The -np setting of the mpirun command sets the number of MPI
tasks/node. The "-k on t Nt" command-line switch sets the number of
threads/task as Nt. The product of these 2 values should be N, i.e.
240 or 224. Also, the number of threads/task should be a multiple of
4 so that logical threads from more than one MPI task do not run on
the same physical core.
Examples of mpirun commands that follow these rules are shown above.
KOKKOS_CUDA_OPTIONS are additional options for CUDA. The LAMMPS KOKKOS package must be compiled
with the {enable_lambda} option when using GPUs.
[Restrictions:]
As noted above, if using GPUs, the number of MPI tasks per compute
node should equal to the number of GPUs per compute node. In the
future Kokkos will support assigning multiple MPI tasks to a single
GPU.
Currently Kokkos does not support AMD GPUs due to limits in the
available backend programming models. Specifically, Kokkos requires
extensive C++ support from the Kernel language. This is expected to
change in the future.
Currently, there are no precision options with the KOKKOS
package. All compilation and computation is performed in double
precision.

View File

@ -9,6 +9,7 @@
angle_style class2 command :h3
angle_style class2/omp command :h3
angle_style class2/kk command :h3
angle_style class2/p6 command :h3
[Syntax:]
@ -102,11 +103,29 @@ more instructions on how to use the accelerated styles effectively.
:line
The {class2/p6} angle style uses the {class2} potential expanded to sixth order:
:c,image(Eqs/angle_class2_p6.jpg)
In this expanded term 6 coefficients for the Ea formula need to be set:
theta0 (degrees)
K2 (energy/radian^2)
K3 (energy/radian^3)
K4 (energy/radian^4)
K5 (energy/radian^5)
K6 (energy/radian^6) :ul
The bond-bond and bond-angle terms remain unchanged.
:line
[Restrictions:]
This angle style can only be used if LAMMPS was built with the CLASS2
package. See the "Making LAMMPS"_Section_start.html#start_3 section
for more info on packages.
package. For the {class2/p6} style LAMMPS needs to be built with the
USER-MOFFF package. See the "Making LAMMPS"_Section_start.html#start_3
section for more info on packages.
[Related commands:]

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