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git-svn-id: svn://svn.icms.temple.edu/lammps-ro/trunk@12592 f3b2605a-c512-4ea7-a41b-209d697bcdaa

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2014-10-07 15:08:33 +00:00
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doc/accelerate_cuda.txt
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@ -71,16 +71,30 @@ projects can be compiled without problems.
This requires two steps (a,b): build the USER-CUDA library, then build
LAMMPS with the USER-CUDA package.
You can do both these steps in one line, using the src/Make.py script,
described in "Section 2.4"_Section_start.html#start_4 of the manual.
Type "Make.py -h" for help. If run from the src directory, this
command will create src/lmp_cuda using src/MAKE/Makefile.mpi as the
starting Makefile.machine:
Make.py -p cuda -cuda mode=single arch=20 -o cuda lib-cuda file mpi :pre
Or you can follow these two (a,b) steps:
(a) Build the USER-CUDA library
The USER-CUDA library is in lammps/lib/cuda. If your {CUDA} toolkit
is not installed in the default system directoy {/usr/local/cuda} edit
the file {lib/cuda/Makefile.common} accordingly.
To set options for the library build, type "make OPTIONS", where
To build the library with the settings in lib/cuda/Makefile.default,
simply type:
make :pre
To set options when the library is built, type "make OPTIONS", where
{OPTIONS} are one or more of the following. The settings will be
written to the {lib/cuda/Makefile.defaults} and used when
the library is built.
written to the {lib/cuda/Makefile.defaults} before the build.
{precision=N} to set the precision level
N = 1 for single precision (default)
@ -104,11 +118,8 @@ the library is built.
0 = no CUFFT support (default)
in the future other CUDA-enabled FFT libraries might be supported :pre
To build the library, simply type:
make :pre
If successful, it will produce the files libcuda.a and Makefile.lammps.
If the build is successful, it will produce the files liblammpscuda.a and
Makefile.lammps.
Note that if you change any of the options (like precision), you need
to re-build the entire library. Do a "make clean" first, followed by
@ -120,8 +131,7 @@ cd lammps/src
make yes-user-cuda
make machine :pre
No additional compile/link flags are needed in your Makefile.machine
in src/MAKE.
No additional compile/link flags are needed in Makefile.machine.
Note that if you change the USER-CUDA library precision (discussed
above) and rebuild the USER-CUDA library, then you also need to