ParallelHowTo - CLaMS

ParallelHowTo

Contents

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>
```