GPC MPI Versions

OpenMPI

To use OpenMPI compiled with intel load the module

module load openmpi intel  

or for the gcc version use

module load openmpi/1.3.3-gcc-v4.4.0-ofed gcc 

OpenMPI has been build to support various communication methods and automatically use the best method depending on how and where it is run. To explicitly specify the method you can use the following --mca flags on ethernet

mpirun --mca btl self,sm,tcp -np 16 -hostfile $PBS_NODEFILE ./a.out

and the following for infiniband

mpirun --mca btl self,sm,openib -np 16 -hostfile $PBS_NODEFILE ./a.out

For more information on available flags see the OpenMPI FAQ

MVAPICH2

MVAPICH2