Running MPI Programs on the Cray SV1

Also see using the Cray SV1
  • MPI (Message Passing Interface) (SV1 has the C and Fortran versions of MPI, not C++)
    1. cc -o filename filename.c
    2. mpirun -np 4 filename
      (runs the executable with 4 processes, "np" = number of processes)
    3. mpirun -nt 4 filename
      (runs the executable with 4 tasks, "nt" = number of tasks,
      tasks use shared memory, may be faster than processes)
  • MPI Resources