ParallelHowTo

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

Intel Compiler 17.0.1

• The MPICH Library 3.2 is installed in directory /usr/nfs/local/local/mpich-3.2-ifort-17.0.1.

• Add the bin subdirectory of the installation directory of MPICH library to your path:

  PATH=/usr/nfs/local/local/mpich-3.2-ifort-17.0.1/bin:$PATH
  export PATH

  Remove serial compiled object files:

  make distclean

  Compile with MPI:

  make useMPI=true progname

  Execute on <n> CPUs:

  mpiexec|mpirun -np <n> <progname>

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

  Remove serial compiled object files:

  make distclean

  Compile with MPI:

  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

  Remove serial compiled object files:

  make distclean

  Compile with MPI:

  make useMPI=true [useComp=pgi] progname

  Execute on <n> CPUs:

  mpiexec|mpirun -np <n> <progname>