Persistent Gather

7.13.3. Persistent Gather

Up: Persistent Collective Operations Next: Persistent Scatter Previous: Persistent Broadcast

MPI_GATHER_INIT(sendbuf, sendcount, sendtype, recvbuf, recvcount, recvtype, root, comm, info, request)
IN sendbuf	starting address of send buffer (choice)
IN sendcount	number of elements in send buffer (non-negative integer)
IN sendtype	datatype of send buffer elements (handle)
OUT recvbuf	address of receive buffer (choice, significant only at root)
IN recvcount	number of elements for any single receive (non-negative integer, significant only at root)
IN recvtype	datatype of recv buffer elements (handle, significant only at root)
IN root	rank of receiving MPI process (integer)
IN comm	communicator (handle)
IN info	info argument (handle)
OUT request	communication request (handle)

C binding
int MPI_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 MPI_Gather_init_c(const void *sendbuf, MPI_Count sendcount, MPI_Datatype sendtype, void *recvbuf, MPI_Count recvcount, MPI_Datatype recvtype, int root, MPI_Comm comm, MPI_Info info, MPI_Request *request) Fortran 2008 binding
MPI_Gather_init(sendbuf, sendcount, sendtype, recvbuf, recvcount, recvtype, root, comm, info, request, ierror) TYPE(*), DIMENSION(..), INTENT(IN), ASYNCHRONOUS :: sendbuf INTEGER, INTENT(IN) :: sendcount, recvcount, root TYPE(MPI_Datatype), INTENT(IN) :: sendtype, recvtype TYPE(*), DIMENSION(..), ASYNCHRONOUS :: recvbuf TYPE(MPI_Comm), INTENT(IN) :: comm TYPE(MPI_Info), INTENT(IN) :: info TYPE(MPI_Request), INTENT(OUT) :: request INTEGER, OPTIONAL, INTENT(OUT) :: ierror MPI_Gather_init(sendbuf, sendcount, sendtype, recvbuf, recvcount, recvtype, root, comm, info, request, ierror) !(_c) TYPE(*), DIMENSION(..), INTENT(IN), ASYNCHRONOUS :: sendbuf INTEGER(KIND=MPI_COUNT_KIND), INTENT(IN) :: sendcount, recvcount TYPE(MPI_Datatype), INTENT(IN) :: sendtype, recvtype TYPE(*), DIMENSION(..), ASYNCHRONOUS :: recvbuf INTEGER, INTENT(IN) :: root TYPE(MPI_Comm), INTENT(IN) :: comm TYPE(MPI_Info), INTENT(IN) :: info TYPE(MPI_Request), INTENT(OUT) :: request INTEGER, OPTIONAL, INTENT(OUT) :: ierror Fortran binding
MPI_GATHER_INIT(SENDBUF, SENDCOUNT, SENDTYPE, RECVBUF, RECVCOUNT, RECVTYPE, ROOT, COMM, INFO, REQUEST, IERROR) <type> SENDBUF(*), RECVBUF(*) INTEGER SENDCOUNT, SENDTYPE, RECVCOUNT, RECVTYPE, ROOT, COMM, INFO, REQUEST, IERROR

Creates a persistent collective communication request for the gather operation.

MPI_GATHERV_INIT(sendbuf, sendcount, sendtype, recvbuf, recvcounts, displs, recvtype, root, comm, info, request)
IN sendbuf	starting address of send buffer (choice)
IN sendcount	number of elements in send buffer (non-negative integer)
IN sendtype	datatype of send buffer elements (handle)
OUT recvbuf	address of receive buffer (choice, significant only at root)
IN recvcounts	nonnegative integer array (of length group size) containing the number of elements that are received from each MPI process (significant only at root)
IN displs	integer array (of length group size). Entry i specifies the displacement relative to recvbuf at which to place the incoming data from MPI process i (significant only at root)
IN recvtype	datatype of recv buffer elements (handle, significant only at root)
IN root	rank of receiving MPI process (integer)
IN comm	communicator (handle)
IN info	info argument (handle)
OUT request	communication request (handle)

C binding
int MPI_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 MPI_Gatherv_init_c(const void *sendbuf, MPI_Count sendcount, MPI_Datatype sendtype, void *recvbuf, const MPI_Count recvcounts[], const MPI_Aint displs[], MPI_Datatype recvtype, int root, MPI_Comm comm, MPI_Info info, MPI_Request *request) Fortran 2008 binding
MPI_Gatherv_init(sendbuf, sendcount, sendtype, recvbuf, recvcounts, displs, recvtype, root, comm, info, request, ierror) TYPE(*), DIMENSION(..), INTENT(IN), ASYNCHRONOUS :: sendbuf INTEGER, INTENT(IN) :: sendcount, root TYPE(MPI_Datatype), INTENT(IN) :: sendtype, recvtype TYPE(*), DIMENSION(..), ASYNCHRONOUS :: recvbuf INTEGER, INTENT(IN), ASYNCHRONOUS :: recvcounts(*), displs(*) TYPE(MPI_Comm), INTENT(IN) :: comm TYPE(MPI_Info), INTENT(IN) :: info TYPE(MPI_Request), INTENT(OUT) :: request INTEGER, OPTIONAL, INTENT(OUT) :: ierror MPI_Gatherv_init(sendbuf, sendcount, sendtype, recvbuf, recvcounts, displs, recvtype, root, comm, info, request, ierror) !(_c) TYPE(*), DIMENSION(..), INTENT(IN), ASYNCHRONOUS :: sendbuf INTEGER(KIND=MPI_COUNT_KIND), INTENT(IN) :: sendcount TYPE(MPI_Datatype), INTENT(IN) :: sendtype, recvtype TYPE(*), DIMENSION(..), ASYNCHRONOUS :: recvbuf INTEGER(KIND=MPI_COUNT_KIND), INTENT(IN), ASYNCHRONOUS :: recvcounts(*) INTEGER(KIND=MPI_ADDRESS_KIND), INTENT(IN), ASYNCHRONOUS :: displs(*) INTEGER, INTENT(IN) :: root TYPE(MPI_Comm), INTENT(IN) :: comm TYPE(MPI_Info), INTENT(IN) :: info TYPE(MPI_Request), INTENT(OUT) :: request INTEGER, OPTIONAL, INTENT(OUT) :: ierror Fortran binding
MPI_GATHERV_INIT(SENDBUF, SENDCOUNT, SENDTYPE, RECVBUF, RECVCOUNTS, DISPLS, RECVTYPE, ROOT, COMM, INFO, REQUEST, IERROR) <type> SENDBUF(*), RECVBUF(*) INTEGER SENDCOUNT, SENDTYPE, RECVCOUNTS(*), DISPLS(*), RECVTYPE, ROOT, COMM, INFO, REQUEST, IERROR

Creates a persistent collective communication request for the gatherv operation.

Up: Persistent Collective Operations Next: Persistent Scatter Previous: Persistent Broadcast

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