129. Nonblocking Reduce-Scatter with Equal Blocks

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MPI_IREDUCE_SCATTER_BLOCK(sendbuf, recvbuf, recvcount, datatype, op, comm, request)
IN sendbuf starting address of send buffer (choice)
OUT recvbuf starting address of receive buffer (choice)
IN recvcount element count per block (non-negative integer)
IN datatype data type of elements of send and receive buffers (handle)
IN op operation (handle)
IN comm communicator (handle)
OUT request communication request (handle)

int MPI_Ireduce_scatter_block(const void* sendbuf, void* recvbuf, int recvcount, MPI_Datatype datatype, MPI_Op op, MPI_Comm comm, MPI_Request *request)

MPI_Ireduce_scatter_block(sendbuf, recvbuf, recvcount, datatype, op, comm, request, ierror)
TYPE(*), DIMENSION(..), INTENT(IN), ASYNCHRONOUS :: sendbuf
TYPE(*), DIMENSION(..), ASYNCHRONOUS :: recvbuf
INTEGER, INTENT(IN) :: recvcount
TYPE(MPI_Datatype), INTENT(IN) :: datatype
TYPE(MPI_Op), INTENT(IN) :: op
TYPE(MPI_Comm), INTENT(IN) :: comm
TYPE(MPI_Request), INTENT(OUT) :: request
INTEGER, OPTIONAL, INTENT(OUT) :: ierror
MPI_IREDUCE_SCATTER_BLOCK(SENDBUF, RECVBUF, RECVCOUNT, DATATYPE, OP, COMM, REQUEST, IERROR)
<type> SENDBUF(*), RECVBUF(*)
INTEGER RECVCOUNT, DATATYPE, OP, COMM, REQUEST, IERROR

This call starts a nonblocking variant of MPI_REDUCE_SCATTER_BLOCK (see Section MPI_REDUCE_SCATTER_BLOCK ).


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