7.12.12. Nonblocking Exclusive Scan

PreviousUpNext
Up: Nonblocking Collective Operations Next: Persistent Collective Operations Previous: Nonblocking Inclusive Scan

MPI_IEXSCAN(sendbuf, recvbuf, count, datatype, op, comm, request)
IN sendbufstarting address of send buffer (choice)
OUT recvbufstarting address of receive buffer (choice)
IN countnumber of elements in input buffer (nonnegative integer)
IN datatypedatatype of elements of input buffer (handle)
IN opoperation (handle)
IN commintra-communicator (handle)
OUT requestcommunication request (handle)
C binding
int MPI_Iexscan(const void *sendbuf, void *recvbuf, int count, MPI_Datatype datatype, MPI_Op op, MPI_Comm comm, MPI_Request *request)
int MPI_Iexscan_c(const void *sendbuf, void *recvbuf, MPI_Count count, MPI_Datatype datatype, MPI_Op op, MPI_Comm comm, MPI_Request *request)
Fortran 2008 binding
MPI_Iexscan(sendbuf, recvbuf, count, datatype, op, comm, request, ierror)
TYPE(*), DIMENSION(..), INTENT(IN), ASYNCHRONOUS :: sendbuf
TYPE(*), DIMENSION(..), ASYNCHRONOUS :: recvbuf
INTEGER, INTENT(IN) :: count
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_Iexscan(sendbuf, recvbuf, count, datatype, op, comm, request, ierror) !(_c)
TYPE(*), DIMENSION(..), INTENT(IN), ASYNCHRONOUS :: sendbuf
TYPE(*), DIMENSION(..), ASYNCHRONOUS :: recvbuf
INTEGER(KIND=MPI_COUNT_KIND), INTENT(IN) :: count
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_IEXSCAN(SENDBUF, RECVBUF, COUNT, DATATYPE, OP, COMM, REQUEST, IERROR)
<type> SENDBUF(*), RECVBUF(*)
INTEGER COUNT, DATATYPE, OP, COMM, REQUEST, IERROR

This call starts a nonblocking variant of MPI_EXSCAN (see Section Exclusive Scan).

PreviousUpNext
Up: Nonblocking Collective Operations Next: Persistent Collective Operations Previous: Nonblocking Inclusive Scan

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