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= HowToParallel = #acl ClamsUserGroup:read,write,delete,revert All:read
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It is possible to run CLaMS on multi-processor machines using MPI or OpenMP.
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On the Ubuntu machines is the PGF compiler suite installed that has MPICH implemented. ## page was renamed from HowToParallel
== ParallelHowTo ==
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In the following a short How to: <<TableOfContents>>
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First it is necessary to make the path of the MPI libraries public by executing: It is possible to run CLaMS on multi-processor machines using MPI.
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for 64bit machines:
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{{{
. /opt/pgi/linux86-64/8.0-2/mpi.sh		 === Intel Compiler 14.0.3 ===

 The MPICH Library is installed in directory ''/usr/nfs/local/local/mpich-intel''.
 Add the bin subdirectory of the installation directory of MPICH library to your path:
 {{{
PATH=/usr/nfs/local/local/mpich-intel/bin:$PATH
export PATH
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for 32bit machines:

{{{
. /opt/pgi/linux86/8.0-2/mpi.sh		  Clams programs can be compiled with:
 {{{
make useMPI=true [useComp=ifc] progname
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Then compile the needed programs by executing:

{{{
make useMPI=true		  Execute on <n> CPUs:
 {{{
mpiexec|mpirun -np <n> <progname>
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Before running the CLaMS script or a single program you have to execute: === Portland Compiler 14.6 ===
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{{{
ssh-add		  It is necessary to make the path of the MPI libraries (included in the portland compiler suite) public by executing:
 {{{
. /opt/pgi/linux86-64/14.6/mpi.sh
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This is necessary, because the processes communicate per ssh.  Clams programs can be compiled with:
 {{{
make useMPI=true [useComp=pgi] progname
}}}
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The programs must be called as following:

{{{
mpirun -np # program

# - number of processors
  Execute on <n> CPUs:
 {{{
mpiexec|mpirun -np <n> <progname>

ParallelHowTo

Contents

  1. ParallelHowTo
    1. Intel Compiler 14.0.3
    2. Portland Compiler 14.6

It is possible to run CLaMS on multi-processor machines using MPI.

Intel Compiler 14.0.3

  • The MPICH Library is installed in directory /usr/nfs/local/local/mpich-intel. Add the bin subdirectory of the installation directory of MPICH library to your path: 

    PATH=/usr/nfs/local/local/mpich-intel/bin:$PATH
export PATH
    Clams programs can be compiled with: 
    make useMPI=true [useComp=ifc] progname

    Execute on <n> CPUs: 

    mpiexec|mpirun -np <n> <progname>

Portland Compiler 14.6

  • It is necessary to make the path of the MPI libraries (included in the portland compiler suite) public by executing: 
    . /opt/pgi/linux86-64/14.6/mpi.sh
    Clams programs can be compiled with: 
    make useMPI=true [useComp=pgi] progname

    Execute on <n> CPUs: 

    mpiexec|mpirun -np <n> <progname>