4.3 Barrier synchronization



MPI_BARRIER( comm )

IN
comm communicator (handle)

int MPI_Barrier(MPI_Comm comm )



MPI_BARRIER(COMM, IERROR)
INTEGER COMM, IERROR



MPI_BARRIER blocks the caller until all group members have called it. The call returns at any process only after all group members have entered the call.

MPI-Standard for MARMOT