MPI_Barrier(3)             (10/24/1994)            MPI_Barrier(3)



     NAME
          MPI_Barrier - Blocks until all process have reached this
          routine.


     INPUT PARAMETERS
          comm - communicator (handle)


     NOTES
          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.


     ALGORITHM
          A tree-like or combine algorithm is used to broadcast a
          message to all members of the communicator.  We can modifiy
          this to use "blocks" at a later time (see MPI_Bcast).


     SYNOPSIS
          #include "mpi.h"
          int MPI_Barrier ( comm )
          MPI_Comm comm;



     LOCATION
           barrier.c

























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