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| = HowToParallel = | ## page was renamed from HowToParallel <<TableOfContents>> = ParallelHowTo = === Portland Compiler === |
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=== Intel Compiler === The MPICH2 Library (1.3.2p1) is installed in directory ''/usr/local/icg/icg1/local/mpich2-intel'' (for Intel C and Fortran compilers). Add the bin subdirectory of the installation directory to your path: {{{ PATH=/usr/local/icg/icg1/local/mpich2-intel/bin:$PATH export PATH }}} To read the man pages set MANPATH to the following: {{{ MANPATH=/usr/local/icg/icg1/local/mpich2-intel/share/man:$MANPATH export MANPATH }}} The programs can be compiled with: {{{ make useComp=ifc useMPI=true <progname> }}} Execute on <n> CPUs: {{{ mpiexec -np <n> <progname> }}} It may be necessary to unset the memory limit: {{{ ulimit -s unlimited }}} |
Contents
ParallelHowTo
Portland Compiler
It is possible to run CLaMS on multi-processor machines using MPI or OpenMP.
On the Ubuntu machines the PGF compiler suite is installed that has MPICH implemented.
In the following a short How to:
First it is necessary to make the path of the MPI libraries public by executing:
for 64bit machines:
. /opt/pgi/linux86-64/10.4/mpi.sh
for 32bit machines:
. /opt/pgi/linux86/10.4/mpi.sh
Then compile the needed programs by executing:
make useMPI=true
Before running the CLaMS script or a single program you have to execute:
ssh-add
This is necessary, because the processes communicate per ssh.
The programs must be called as following:
mpirun -np # program # - number of processors
Intel Compiler
The MPICH2 Library (1.3.2p1) is installed in directory /usr/local/icg/icg1/local/mpich2-intel (for Intel C and Fortran compilers).
Add the bin subdirectory of the installation directory to your path:
PATH=/usr/local/icg/icg1/local/mpich2-intel/bin:$PATH export PATH
To read the man pages set MANPATH to the following:
MANPATH=/usr/local/icg/icg1/local/mpich2-intel/share/man:$MANPATH export MANPATH
The programs can be compiled with:
make useComp=ifc useMPI=true <progname>
Execute on <n> CPUs:
mpiexec -np <n> <progname>
It may be necessary to unset the memory limit:
ulimit -s unlimited