[OMPI users] Fortran issues on Windows and 1.5 Trunk version

[Damien]

Hi all,

Me again (poor Shiqing, I know...).  I've been trying to get the MUMPS 
solver running on Windows with Open-MPI.  I can only use the 1.5 branch 
because that has Fortran support on Windows and 1.4.2 doesn't.  There's 
a couple of things going wrong:

First, calls to MPI_Initialized from Fortran report that MPI isn't 
initialised (MUMPS has a MPI_Initialized check).  If I call 
MPI_Initialized from C or C++, it is initialized.  I'm not sure what 
this means for MPI calls from Fortran, but it could be the cause of the 
second problem, which is:  If I bypass the MPI_Initialized check in 
MUMPS, I can get the solver to start and run in one process.  If I try 
and run 2 or more processes, all the processes ramp to 100% CPU in the 
first parallel section, and sit there with no progress.  If I break in 
with the debugger, I can usually land on some MPI_IProbe calls, 
presumably looking for receives that don't exist, possibly because the 
Fortran MPI environment really isn't initialised.  After many debugger 
break-ins, I end up in a small group of calls, so it's a loop waiting 
for something.

For reference, it was yesterday's 1.5 svn trunk, MUMPS 4.9.2, and Intel 
Math libraries, and a 32-bit build.  MUMPS is Fortran 90/95 but uses the 
F77 MPI interfaces.  It does run with MPICH2.  I realise that 1.5 is a 
dev branch, so it might just be too early for this to work.  I'd be 
grateful for suggestions though.  I can build and test this on Linux if 
that would help narrow this down.

Damien