Multiprocessing by Message Passing MPI

Compile MPI Program Using SGI’s MPI Implementation

For C program:

tonka% cc -o example example.c -lmpi

For Fortran 77 program:

tonka% f77 -o example example.f -lmpi

For Fortran 90 program:

tonka% f90 -o example example.f90 -lmpi

To run job interactively using SGI’s MPI implementation:

tonka% mpirun -np 4 example

To submit a multiprocessor batch job requiring 4 processors:

Tonka% bsub -q pca-mp4 " mpirun -np 4 example"
MPI programs compiled with SGI’s implementation must use the mpirun script to run jobs. Note however that there is more than one way to run MPICH-compiled executables.