Waits for an MPI request to complete
res = MPI_Wait(request[,comm=mpi_comm])
The MPI request.
If the optional argument "comm" is given, this function will use the MPI communicator created by MPI_Create_comm. If not, the default MPI_COMM_WORLD is used.
The variable sent by MPI_Isend and matching the MPI Request declared by MPI_Irecv. If the optional argument "comm" is given, all nodes which are not in the communicator will return empty matrix.
TODO.
MPI_Init(); rnk = MPI_Comm_rank(); sizeNodes = MPI_Comm_size(); SLV = rnk; Master = ~ SLV; assert_checkequal(MPI_Comm_size(), 2); if Master for slaveId = 1:sizeNodes-1 value = slaveId*2 MPI_Isend(value, slaveId, 42); end else rankSource=0; tag=0; MPI_Irecv(rankSource, tag, 42); // MPI_Irecv does not return any value value=MPI_Wait(42) // the value will be returned by MPI_Wait assert_checkequal(value,2); end MPI_Finalize(); exit() | ![]() | ![]() |