| MPI_BARRIER( comm ) | |
| IN comm | communicator (handle) |
int MPI_Barrier(MPI_Comm comm)
MPI_BARRIER(COMM, IERROR)
If comm is an intracommunicator,
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.
2.2If comm is an intercommunicator, MPI_BARRIER involves two groups.
The call returns at processes in one group (group A) of the intercommunicator
only after all members of the other group (group B) have entered the call (and vice
versa). A process may return from the call before all processes in its own group
have entered the call.
INTEGER COMM, IERROR
{ void MPI::Comm::Barrier() const = 0 (binding deprecated, see Section Deprecated since MPI-2.2
) }
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(Unofficial) MPI-2.2 of September 4, 2009
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