Nonblocking Reduce-Scatter with Equal Blocks

7.12.9. Nonblocking Reduce-Scatter with Equal Blocks

Up: Nonblocking Collective Operations Next: Nonblocking Reduce-Scatter Previous: Nonblocking All-Reduce

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 (nonnegative integer)
IN datatype	datatype of elements of send and receive buffers (handle)
IN op	operation (handle)
IN comm	communicator (handle)
OUT request	communication request (handle)

C binding
int MPI_Ireduce_scatter_block(const void *sendbuf, void *recvbuf, int recvcount, MPI_Datatype datatype, MPI_Op op, MPI_Comm comm, MPI_Request *request) int MPI_Ireduce_scatter_block_c(const void *sendbuf, void *recvbuf, MPI_Count recvcount, MPI_Datatype datatype, MPI_Op op, MPI_Comm comm, MPI_Request *request) Fortran 2008 binding
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) !(_c) TYPE(*), DIMENSION(..), INTENT(IN), ASYNCHRONOUS :: sendbuf TYPE(*), DIMENSION(..), ASYNCHRONOUS :: recvbuf INTEGER(KIND=MPI_COUNT_KIND), 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 Fortran binding
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).

Up: Nonblocking Collective Operations Next: Nonblocking Reduce-Scatter Previous: Nonblocking All-Reduce

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