Receive one datum from another process
MPI mapping mpi_send
Type | Intent | Optional | Attributes | Name | ||
---|---|---|---|---|---|---|
complex(kind=real_4), | intent(inout) | :: | msg |
Place received data into this variable |
||
integer, | intent(inout) | :: | source |
Process to receive from Transfer identifier |
||
integer, | intent(inout) | :: | tag |
Process to receive from Transfer identifier |
||
integer, | intent(in) | :: | gid |
Message passing environment identifier |
SUBROUTINE mp_recv_c (msg, source, tag, gid)
!! Receive one datum from another process
!!
!! MPI mapping
!! mpi_send
COMPLEX(kind=real_4), INTENT(INOUT) :: msg
!! Place received data into this variable
INTEGER, INTENT(INOUT) :: source, tag
!! Process to receive from
!! Transfer identifier
INTEGER, INTENT(IN) :: gid
!! Message passing environment identifier
CHARACTER(LEN=*), PARAMETER :: routineN = 'mp_recv_c'
INTEGER :: handle, ierr, msglen
#if defined(__parallel)
INTEGER, ALLOCATABLE, DIMENSION(:) :: status
#endif
ierr = 0
CALL timeset(routineN, handle)
msglen = 1
#if defined(__parallel)
ALLOCATE (status(MPI_STATUS_SIZE))
CALL mpi_recv(msg, msglen, MPI_COMPLEX, source, tag, gid, status, ierr)
IF (ierr /= 0) CALL mp_stop(ierr, "mpi_recv @ "//routineN)
CALL add_perf(perf_id=14, msg_size=msglen*(2*real_4_size))
source = status(MPI_SOURCE)
tag = status(MPI_TAG)
DEALLOCATE (status)
#else
MARK_USED(msg)
MARK_USED(source)
MARK_USED(tag)
MARK_USED(gid)
! only defined in parallel
DBCSR_ABORT("not in parallel mode")
#endif
CALL timestop(handle)
END SUBROUTINE mp_recv_c