allreduce_i32_array Subroutine

private subroutine allreduce_i32_array(comm, buffer, count, op)

Arguments

Type IntentOptional Attributes Name
type(comm_t), intent(in) :: comm
integer(kind=int32), intent(inout) :: buffer(:)
integer, intent(in), optional :: count
integer, intent(in), optional :: op

Calls

proc~~allreduce_i32_array~2~~CallsGraph proc~allreduce_i32_array~2 allreduce_i32_array mpi_allreduce mpi_allreduce proc~allreduce_i32_array~2->mpi_allreduce proc~comm_get~2 comm_t%comm_get proc~allreduce_i32_array~2->proc~comm_get~2

Called by

proc~~allreduce_i32_array~2~~CalledByGraph proc~allreduce_i32_array~2 allreduce_i32_array interface~allreduce~2 allreduce interface~allreduce~2->proc~allreduce_i32_array~2

Variables

Type Visibility Attributes Name Initial
integer, private :: ierr
integer, private :: mpi_op
integer, private :: n

Source Code

   subroutine allreduce_i32_array(comm, buffer, count, op)
      type(comm_t), intent(in) :: comm
      integer(int32), intent(inout) :: buffer(:)
      integer, intent(in), optional :: count
      integer, intent(in), optional :: op
      integer :: mpi_op
      integer :: ierr, n

      if (present(count)) then
         n = count
      else
         n = size(buffer)
      end if

      if (present(op)) then
         mpi_op = op
      else
         mpi_op = MPI_SUM
      end if

      call MPI_Allreduce(MPI_IN_PLACE, buffer, n, MPI_INTEGER, &
                         mpi_op, comm%get(), ierr)
   end subroutine allreduce_i32_array