Differences between revisions 2 and 3

HowToParallel

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

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

The programs can be compiled with:

make useComp=ifc useMPI=true <progname>

Execute on <n> CPUs:

mpirun -np <n> <progname>

-  ⇤ ← Revision 2 as of 2011-05-02 12:25:48 → 
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  Editor: GebhardGuenther
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+   ← Revision 3 as of 2011-05-06 09:10:17 → ⇥
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  Editor: NicoleThomas
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+=== Portland Compiler ===
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-On the Ubuntu machines is the PGF compiler suite installed that has MPICH implemented.
+On the Ubuntu machines the PGF compiler suite is installed that has MPICH implemented.
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-. /opt/pgi/linux86-64/8.0-2/mpi.sh
+. /opt/pgi/linux86-64/10.4/mpi.sh
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-. /opt/pgi/linux86/8.0-2/mpi.sh
+. /opt/pgi/linux86/10.4/mpi.sh
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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
}}}

The programs can be compiled with:
{{{
make useComp=ifc useMPI=true <progname>
}}}

Execute on <n> CPUs:
{{{
mpirun -np <n> <progname>
}}}