Retrieving Further Information

• Status is a data structure allocated in the user’s program.

• In C:

  • int recvd_tag, recvd_from, recvd_count;
  • MPI_Status status;
  • MPI_Recv(..., MPI_ANY_SOURCE, MPI_ANY_TAG, ..., &status )
  • recvd_tag = status.MPI_TAG;
  • recvd_from = status.MPI_SOURCE;
  • MPI_Get_count( &status, datatype, &recvd_count );

• In Fortran:

  • integer recvd_tag, recvd_from, recvd_count
  • integer status(MPI_STATUS_SIZE)
  • call MPI_RECV(..., MPI_ANY_SOURCE, MPI_ANY_TAG, .. status, ierr)
  • tag_recvd = status(MPI_TAG)
  • recvd_from = status(MPI_SOURCE)
  • call MPI_GET_COUNT(status, datatype, recvd_count, ierr)

Notes: