- subroutine uop( cin, cout, count, datatype )
- use mpi
- integer cin(*), cout(*)
- integer count, datatype
- integer i
-
- if (datatype .ne. MPI_INTEGER) then
- print *, 'Invalid datatype (',datatype,') passed to user_op()'
- return
- endif
-
- do i=1, count
- cout(i) = cin(i) + cout(i)
- enddo
- end
-