Hi all,
I figure this is one of those things in the standard, but I figured I'd
get a better explanation asking here than digging through that myself.
Long story short, if I try the following code:
*program foo*
* use mpi, only: mpi_bcast*
*end program foo*
... This fails to compile in MPICH (3.4.2, at least), IntelMPI and
MVAPICH, but *does* work on OpenMPI and SGI MPT, at least on systems I've
tried. Replacing the 'use, only' with just a 'use' directive works fine.
And MPI_BCAST is just an example here; things like 'MPI_Finalize' and
'MPI_Integer' appear to be in the module, but MPI_Send also fails. Is this
a scenario where the standard doesn't support this, but OpenMPI and MPT do
it as a matter of convenience vs strict adherence found in the MPICH-based
libraries? Or am I missing some simple issue?
Any insight would be greatly appreciated!
Thanks,
- Brian
