Nonblocking Neighborhood Gather

9.7.1. Nonblocking Neighborhood Gather

Up: Nonblocking Neighborhood Communication on Process Topologies Next: Nonblocking Neighborhood Alltoall Previous: Nonblocking Neighborhood Communication on Process Topologies

MPI_INEIGHBOR_ALLGATHER(sendbuf, sendcount, sendtype, recvbuf, recvcount, recvtype, comm, request)
IN sendbuf	starting address of send buffer (choice)
IN sendcount	number of elements sent to each neighbor (nonnegative integer)
IN sendtype	datatype of send buffer elements (handle)
OUT recvbuf	starting address of receive buffer (choice)
IN recvcount	number of elements received from each neighbor (nonnegative integer)
IN recvtype	datatype of receive buffer elements (handle)
IN comm	communicator with associated virtual topology (handle)
OUT request	communication request (handle)

C binding
int MPI_Ineighbor_allgather(const void *sendbuf, int sendcount, MPI_Datatype sendtype, void *recvbuf, int recvcount, MPI_Datatype recvtype, MPI_Comm comm, MPI_Request *request) int MPI_Ineighbor_allgather_c(const void *sendbuf, MPI_Count sendcount, MPI_Datatype sendtype, void *recvbuf, MPI_Count recvcount, MPI_Datatype recvtype, MPI_Comm comm, MPI_Request *request) Fortran 2008 binding
MPI_Ineighbor_allgather(sendbuf, sendcount, sendtype, recvbuf, recvcount, recvtype, comm, request, ierror) TYPE(*), DIMENSION(..), INTENT(IN), ASYNCHRONOUS :: sendbuf INTEGER, INTENT(IN) :: sendcount, recvcount TYPE(MPI_Datatype), INTENT(IN) :: sendtype, recvtype TYPE(*), DIMENSION(..), ASYNCHRONOUS :: recvbuf TYPE(MPI_Comm), INTENT(IN) :: comm TYPE(MPI_Request), INTENT(OUT) :: request INTEGER, OPTIONAL, INTENT(OUT) :: ierror MPI_Ineighbor_allgather(sendbuf, sendcount, sendtype, recvbuf, recvcount, recvtype, comm, 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 TYPE(MPI_Comm), INTENT(IN) :: comm TYPE(MPI_Request), INTENT(OUT) :: request INTEGER, OPTIONAL, INTENT(OUT) :: ierror Fortran binding
MPI_INEIGHBOR_ALLGATHER(SENDBUF, SENDCOUNT, SENDTYPE, RECVBUF, RECVCOUNT, RECVTYPE, COMM, REQUEST, IERROR) <type> SENDBUF(*), RECVBUF(*) INTEGER SENDCOUNT, SENDTYPE, RECVCOUNT, RECVTYPE, COMM, REQUEST, IERROR

MPI_INEIGHBOR_ALLGATHER starts a nonblocking variant of MPI_NEIGHBOR_ALLGATHER.

MPI_INEIGHBOR_ALLGATHERV(sendbuf, sendcount, sendtype, recvbuf, recvcounts, displs, recvtype, comm, request)
IN sendbuf	starting address of send buffer (choice)
IN sendcount	number of elements sent to each neighbor (nonnegative integer)
IN sendtype	datatype of send buffer elements (handle)
OUT recvbuf	starting address of receive buffer (choice)
IN recvcounts	nonnegative integer array (of length indegree) containing the number of elements that are received from each neighbor
IN displs	integer array (of length indegree). Entry i specifies the displacement (relative to recvbuf) at rwhich to place the incoming data from neighbor i
IN recvtype	datatype of receive buffer elements (handle)
IN comm	communicator with associated virtual topology (handle)
OUT request	communication request (handle)

C binding
int MPI_Ineighbor_allgatherv(const void *sendbuf, int sendcount, MPI_Datatype sendtype, void *recvbuf, const int recvcounts[], const int displs[], MPI_Datatype recvtype, MPI_Comm comm, MPI_Request *request) int MPI_Ineighbor_allgatherv_c(const void *sendbuf, MPI_Count sendcount, MPI_Datatype sendtype, void *recvbuf, const MPI_Count recvcounts[], const MPI_Aint displs[], MPI_Datatype recvtype, MPI_Comm comm, MPI_Request *request) Fortran 2008 binding
MPI_Ineighbor_allgatherv(sendbuf, sendcount, sendtype, recvbuf, recvcounts, displs, recvtype, comm, request, ierror) TYPE(*), DIMENSION(..), INTENT(IN), ASYNCHRONOUS :: sendbuf INTEGER, INTENT(IN) :: sendcount 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_Request), INTENT(OUT) :: request INTEGER, OPTIONAL, INTENT(OUT) :: ierror MPI_Ineighbor_allgatherv(sendbuf, sendcount, sendtype, recvbuf, recvcounts, displs, recvtype, comm, 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(*) TYPE(MPI_Comm), INTENT(IN) :: comm TYPE(MPI_Request), INTENT(OUT) :: request INTEGER, OPTIONAL, INTENT(OUT) :: ierror Fortran binding
MPI_INEIGHBOR_ALLGATHERV(SENDBUF, SENDCOUNT, SENDTYPE, RECVBUF, RECVCOUNTS, DISPLS, RECVTYPE, COMM, REQUEST, IERROR) <type> SENDBUF(*), RECVBUF(*) INTEGER SENDCOUNT, SENDTYPE, RECVCOUNTS(*), DISPLS(*), RECVTYPE, COMM, REQUEST, IERROR

MPI_INEIGHBOR_ALLGATHERV starts a nonblocking variant of MPI_NEIGHBOR_ALLGATHERV.

Up: Nonblocking Neighborhood Communication on Process Topologies Next: Nonblocking Neighborhood Alltoall Previous: Nonblocking Neighborhood Communication on Process Topologies

Return to MPI-5.0 Standard Index
Return to MPI Forum Home Page

(Unofficial) MPI-5.0 of June 9, 2025
HTML Generated on March 2, 2025