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MPIX_Barrier_init(3) Open MPI MPIX_Barrier_init(3) NAME MPIX_Allgather_init, MPIX_Allgatherv_init, MPIX_Allreduce_init, MPIX_Alltoall_init, MPIX_Alltoallv_init, MPIX_Alltoallw_init, MPIX_Bar- rier_init, MPIX_Bcast_init, MPIX_Exscan_init, MPIX_Gather_init, MPIX_Gatherv_init, MPIX_Reduce_init, MPIX_Reduce_scatter_init, MPIX_Re- duce_scatter_block_init, MPIX_Scan_init, MPIX_Scatter_init, MPIX_Scat- terv_init, MPIX_Neighbor_allgather_init, MPIX_Neighbor_allgatherv_init, MPIX_Neighbor_alltoall_init, MPIX_Neighbor_alltoallv_init, MPIX_Neigh- bor_alltoallw_init - Builds a handle for a collective communication or neighborhood collective communication SYNTAX C Syntax #include <mpi.h> #include <mpi-ext.h> int MPIX_Allgather_init(const void *sendbuf, int sendcount, MPI_Datatype sendtype, void *recvbuf, int recvcount, MPI_Datatype recvtype, MPI_Comm comm, MPI_Info info, MPI_Request *request) int MPIX_Allgatherv_init(const void *sendbuf, int sendcount, MPI_Datatype sendtype, void *recvbuf, const int recvcounts[], const int displs[], MPI_Datatype recvtype, MPI_Comm comm, MPI_Info info, MPI_Request *request) int MPIX_Allreduce_init(const void *sendbuf, void *recvbuf, int count, MPI_Datatype datatype, MPI_Op op, MPI_Comm comm, MPI_Info info, MPI_Request *request) int MPIX_Alltoall_init(const void *sendbuf, int sendcount, MPI_Datatype sendtype, void *recvbuf, int recvcount, MPI_Datatype recvtype, MPI_Comm comm, MPI_Info info, MPI_Request *request) int MPIX_Alltoallv_init(const void *sendbuf, const int sendcounts[], const int sdispls[], MPI_Datatype sendtype, void *recvbuf, const int recvcounts[], const int rdispls[], MPI_Datatype recvtype, MPI_Comm comm, MPI_Info info, MPI_Request *request) int MPIX_Alltoallw_init(const void *sendbuf, const int sendcounts[], const int sdispls[], const MPI_Datatype sendtypes[], void *recvbuf, const int recvcounts[], const int rdispls[], const MPI_Datatype recvtypes[], MPI_Comm comm, MPI_Info info, MPI_Request *request) int MPIX_Barrier_init(MPI_Comm comm, MPI_Info info, MPI_Request *request) int MPIX_Bcast_init(void *buffer, int count, MPI_Datatype datatype, int root, MPI_Comm comm, MPI_Info info, MPI_Request *request) int MPIX_Exscan_init(const void *sendbuf, void *recvbuf, int count, MPI_Datatype datatype, MPI_Op op, MPI_Comm comm, MPI_Info info, MPI_Request *request) int MPIX_Gather_init(const void *sendbuf, int sendcount, MPI_Datatype sendtype, void *recvbuf, int recvcount, MPI_Datatype recvtype, int root, MPI_Comm comm, MPI_Info info, MPI_Request *request) int MPIX_Gatherv_init(const void *sendbuf, int sendcount, MPI_Datatype sendtype, void *recvbuf, const int recvcounts[], const int displs[], MPI_Datatype recvtype, int root, MPI_Comm comm, MPI_Info info, MPI_Request *request) int MPIX_Reduce_init(const void *sendbuf, void *recvbuf, int count, MPI_Datatype datatype, MPI_Op op, int root, MPI_Comm comm, MPI_Info info, MPI_Request *request) int MPIX_Reduce_scatter_init(const void *sendbuf, void *recvbuf, const int recvcounts[], MPI_Datatype datatype, MPI_Op op, MPI_Comm comm, MPI_Info info, MPI_Request *request) int MPIX_Reduce_scatter_block_init(const void *sendbuf, void *recvbuf, int recvcount, MPI_Datatype datatype, MPI_Op op, MPI_Comm comm, MPI_Info info, MPI_Request *request) int MPIX_Scan_init(const void *sendbuf, void *recvbuf, int count, MPI_Datatype datatype, MPI_Op op, MPI_Comm comm, MPI_Info info, MPI_Request *request) int MPIX_Scatter_init(const void *sendbuf, int sendcount, MPI_Datatype sendtype, void *recvbuf, int recvcount, MPI_Datatype recvtype, int root, MPI_Comm comm, MPI_Info info, MPI_Request *request) int MPIX_Scatterv_init(const void *sendbuf, const int sendcounts[], const int displs[], MPI_Datatype sendtype, void *recvbuf, int recvcount, MPI_Datatype recvtype, int root, MPI_Comm comm, MPI_Info info, MPI_Request *request) int MPIX_Neighbor_allgather_init(const void *sendbuf, int sendcount, MPI_Datatype sendtype, void *recvbuf, int recvcount, MPI_Datatype recvtype, MPI_Comm comm, MPI_Info info, MPI_Request *request) int MPIX_Neighbor_allgatherv_init(const void *sendbuf, int sendcount, MPI_Datatype sendtype, void *recvbuf, const int recvcounts[], const int displs[], MPI_Datatype recvtype, MPI_Comm comm, MPI_Info info, MPI_Request *request) int MPIX_Neighbor_alltoall_init(const void *sendbuf, int sendcount, MPI_Datatype sendtype, void *recvbuf, int recvcount, MPI_Datatype recvtype, MPI_Comm comm, MPI_Info info, MPI_Request *request) int MPIX_Neighbor_alltoallv_init(const void *sendbuf, const int sendcounts[], const int sdispls[], MPI_Datatype sendtype, void *recvbuf, const int recvcounts[], const int rdispls[], MPI_Datatype recvtype, MPI_Comm comm, MPI_Info info, MPI_Request *request) int MPIX_Neighbor_alltoallw_init(const void *sendbuf, const int sendcounts[], const MPI_Aint sdispls[], const MPI_Datatype sendtypes[], void *recvbuf, const int recvcounts[], const MPI_Aint rdispls[], const MPI_Datatype recvtypes[], MPI_Comm comm, MPI_Info info, MPI_Request *request) Fortran Syntax USE MPI USE MPI_EXT ! or the older form: INCLUDE 'mpif.h'; INCLUDE 'mpif-ext.h' MPIX_ALLGATHER_INIT(SENDBUF, SENDCOUNT, SENDTYPE, RECVBUF, RECVCOUNT, RECVTYPE, COMM, INFO, REQUEST, IERROR) <type> SENDBUF(*), RECVBUF(*) INTEGER SENDCOUNT, SENDTYPE, RECVCOUNT, RECVTYPE, COMM, INFO INTEGER REQUEST, IERROR MPIX_ALLGATHERV_INIT(SENDBUF, SENDCOUNT, SENDTYPE, RECVBUF, RECVCOUNT, DISPLS, RECVTYPE, COMM, INFO, REQUEST, IERROR) <type> SENDBUF(*), RECVBUF(*) INTEGER SENDCOUNT, SENDTYPE, RECVCOUNT(*) INTEGER DISPLS(*), RECVTYPE, COMM, INFO, REQUEST, IERROR MPIX_ALLREDUCE_INIT(SENDBUF, RECVBUF, COUNT, DATATYPE, OP, COMM, INFO, REQUEST, IERROR) <type> SENDBUF(*), RECVBUF(*) INTEGER COUNT, DATATYPE, OP, COMM, INFO, REQUEST, IERROR MPIX_ALLTOALL_INIT(SENDBUF, SENDCOUNT, SENDTYPE, RECVBUF, RECVCOUNT, RECVTYPE, COMM, INFO, REQUEST, IERROR) <type> SENDBUF(*), RECVBUF(*) INTEGER SENDCOUNT, SENDTYPE, RECVCOUNT, RECVTYPE INTEGER COMM, INFO, REQUEST, IERROR MPIX_ALLTOALLV_INIT(SENDBUF, SENDCOUNTS, SDISPLS, SENDTYPE, RECVBUF, RECVCOUNTS, RDISPLS, RECVTYPE, COMM, INFO, REQUEST, IERROR) <type> SENDBUF(*), RECVBUF(*) INTEGER SENDCOUNTS(*), SDISPLS(*), SENDTYPE INTEGER RECVCOUNTS(*), RDISPLS(*), RECVTYPE INTEGER COMM, INFO, REQUEST, IERROR MPIX_ALLTOALLW_INIT(SENDBUF, SENDCOUNTS, SDISPLS, SENDTYPES, RECVBUF, RECVCOUNTS, RDISPLS, RECVTYPES, COMM, INFO, REQUEST, IERROR) <type> SENDBUF(*), RECVBUF(*) INTEGER SENDCOUNTS(*), SDISPLS(*), SENDTYPES(*) INTEGER RECVCOUNTS(*), RDISPLS(*), RECVTYPES(*) INTEGER COMM, INFO, REQUEST, IERROR MPIX_BARRIER_INIT(COMM, INFO, REQUEST, IERROR) INTEGER COMM, INFO, REQUEST, IERROR MPIX_BCAST_INIT(BUFFER, COUNT, DATATYPE, ROOT, COMM, INFO, REQUEST, IERROR) <type> BUFFER(*) INTEGER COUNT, DATATYPE, ROOT, COMM, INFO, REQUEST, IERROR MPIX_EXSCAN_INIT(SENDBUF, RECVBUF, COUNT, DATATYPE, OP, COMM, INFO, REQUEST, IERROR) <type> SENDBUF(*), RECVBUF(*) INTEGER COUNT, DATATYPE, OP, COMM, INFO, REQUEST, IERROR MPIX_GATHER_INIT(SENDBUF, SENDCOUNT, SENDTYPE, RECVBUF, RECVCOUNT, RECVTYPE, ROOT, COMM, INFO, REQUEST, IERROR) <type> SENDBUF(*), RECVBUF(*) INTEGER SENDCOUNT, SENDTYPE, RECVCOUNT, RECVTYPE, ROOT INTEGER COMM, INFO, REQUEST, IERROR MPIX_GATHERV_INIT(SENDBUF, SENDCOUNT, SENDTYPE, RECVBUF, RECVCOUNTS, DISPLS, RECVTYPE, ROOT, COMM, INFO, REQUEST, IERROR) <type> SENDBUF(*), RECVBUF(*) INTEGER SENDCOUNT, SENDTYPE, RECVCOUNTS(*), DISPLS(*) INTEGER RECVTYPE, ROOT, COMM, INFO, REQUEST, IERROR MPIX_REDUCE_INIT(SENDBUF, RECVBUF, COUNT, DATATYPE, OP, ROOT, COMM, INFO, REQUEST, IERROR) <type> SENDBUF(*), RECVBUF(*) INTEGER COUNT, DATATYPE, OP, ROOT, COMM, INFO, REQUEST, IERROR MPIX_REDUCE_SCATTER_INIT(SENDBUF, RECVBUF, RECVCOUNTS, DATATYPE, OP, COMM, INFO, REQUEST, IERROR) <type> SENDBUF(*), RECVBUF(*) INTEGER RECVCOUNTS(*), DATATYPE, OP, COMM, INFO, REQUEST, IERROR MPIX_REDUCE_SCATTER_BLOCK_INIT(SENDBUF, RECVBUF, RECVCOUNT, DATATYPE, OP, COMM, INFO, REQUEST, IERROR) <type> SENDBUF(*), RECVBUF(*) INTEGER RECVCOUNT, DATATYPE, OP, COMM, INFO, REQUEST, IERROR MPIX_SCAN_INIT(SENDBUF, RECVBUF, COUNT, DATATYPE, OP, COMM, INFO, REQUEST, IERROR) <type> SENDBUF(*), RECVBUF(*) INTEGER COUNT, DATATYPE, OP, COMM, INFO, REQUEST, IERROR MPIX_SCATTER_INIT(SENDBUF, SENDCOUNT, SENDTYPE, RECVBUF, RECVCOUNT, RECVTYPE, ROOT, COMM, INFO, REQUEST, IERROR) <type> SENDBUF(*), RECVBUF(*) INTEGER SENDCOUNT, SENDTYPE, RECVCOUNT, RECVTYPE, ROOT INTEGER COMM, INFO, REQUEST, IERROR MPIX_SCATTERV_INIT(SENDBUF, SENDCOUNTS, DISPLS, SENDTYPE, RECVBUF, RECVCOUNT, RECVTYPE, ROOT, COMM, INFO, REQUEST, IERROR) <type> SENDBUF(*), RECVBUF(*) INTEGER SENDCOUNTS(*), DISPLS(*), SENDTYPE INTEGER RECVCOUNT, RECVTYPE, ROOT, COMM, INFO, REQUEST, IERROR MPIX_NEIGHBOR_ALLGATHER_INIT(SENDBUF, SENDCOUNT, SENDTYPE, RECVBUF, RECVCOUNT, RECVTYPE, COMM, INFO, REQUEST, IERROR) <type> SENDBUF(*), RECVBUF(*) INTEGER SENDCOUNT, SENDTYPE, RECVCOUNT, RECVTYPE, COMM, INTEGER INFO, REQUEST, IERROR MPIX_NEIGHBOR_ALLGATHERV_INIT(SENDBUF, SENDCOUNT, SENDTYPE, RECVBUF, RECVCOUNT, DISPLS, RECVTYPE, COMM, INFO, REQUEST, IERROR) <type> SENDBUF(*), RECVBUF(*) INTEGER SENDCOUNT, SENDTYPE, RECVCOUNT(*), INTEGER DISPLS(*), RECVTYPE, COMM, INFO, REQUEST, IERROR MPIX_NEIGHBOR_ALLTOALL_INIT(SENDBUF, SENDCOUNT, SENDTYPE, RECVBUF, RECVCOUNT, RECVTYPE, COMM, INFO, REQUEST, IERROR) <type> SENDBUF(*), RECVBUF(*) INTEGER SENDCOUNT, SENDTYPE, RECVCOUNT, RECVTYPE INTEGER COMM, INFO, REQUEST, IERROR MPIX_NEIGHBOR_ALLTOALLV_INIT(SENDBUF, SENDCOUNTS, SDISPLS, SENDTYPE, RECVBUF, RECVCOUNTS, RDISPLS, RECVTYPE, COMM, INFO, REQUEST, IERROR) <type> SENDBUF(*), RECVBUF(*) INTEGER SENDCOUNTS(*), SDISPLS(*), SENDTYPE INTEGER RECVCOUNTS(*), RDISPLS(*), RECVTYPE INTEGER COMM, INFO, REQUEST, IERROR MPIX_NEIGHBOR_ALLTOALLW_INIT(SENDBUF, SENDCOUNTS, SDISPLS, SENDTYPES, RECVBUF, RECVCOUNTS, RDISPLS, RECVTYPES, COMM, INFO, REQUEST, IERROR) <type> SENDBUF(*), RECVBUF(*) INTEGER SENDCOUNTS(*), SENDTYPES(*) INTEGER RECVCOUNTS(*), RECVTYPES(*) INTEGER(KIND=MPI_ADDRESS_KIND) SDISPLS(*), RDISPLS(*) INTEGER COMM, INFO, REQUEST, IERROR DESCRIPTION Creates a persistent communication request for a collective operation or neighborhood collective operation. As of Nov. 2018, the feature of persistent collective communication op- erations and persistent collective neighborhood communication opera- tions is planned to be included in the next MPI Standard after MPI-3.1. https://github.com/mpi-forum/mpi-issues/issues/25 Open MPI implements 2018 Draft Specification of the MPI standard shown in the following URL. https://www.mpi-forum.org/docs/drafts/mpi-2018-draft-report.pdf The interface may still change in the standard. Therefore the prefix MPIX_ is used instead of MPI_ for these request creation routines. To start, complete, and free the created request, usual MPI routines (MPI_Start etc.) can be used. Future versions of Open MPI will switch to the MPI_ prefix and will not require the C header file mpi-ext.h, the Fortran modules mpi_ext and mpi_f08_ext, and the Fortran header file mpif-ext.h once the MPI Stan- dard which includes this feature is published. EXAMPLE MPI_Request req; MPIX_Barrier_init(MPI_COMM_WORLD, MPI_INFO_NULL, &req); MPI_Start(&req); MPI_Wait(&req, MPI_STATUS_IGNORE); MPI_Request_free(&req); SEE ALSO MPI_Start MPI_Startall MPI_Request_free 4.1.3 Mar 31, 2022 MPIX_Barrier_init(3)
NAME | SYNTAX | C Syntax | Fortran Syntax | DESCRIPTION | EXAMPLE | SEE ALSO
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