Bill,
> A rather stable production code that has worked with various versions of MPI
> on various architectures started hanging with gcc-4.4.2 and openmpi 1.3.33
Probably this bug :
https://svn.open-mpi.org/trac/ompi/ticket/2043
Waiting for a correction, try adding this option to mpirun :
-mca
Martin,
> I expect problems with sizes larger than 2^31-1, but these array sizes
> are still much smaller.
No, they are bigger, you allocate two arrays of 320 Mdouble :
2 * 320M * 8 = 5GB.
Are your processes limited to 4GB virtual memory ?
--Vincent
> >>> It seems that the calls to collective communication are not
> >>> returning for some MPI processes, when the number of processes is
> >>> greater or equal to 5. It's reproduceable, on two different
> >>> architectures, with two different versions of OpenMPI (1.3.2 and
> >>> 1.3.3). It was
> > It seems that the calls to collective communication are not
> > returning for some MPI processes, when the number of processes is
> > greater or equal to 5. It's reproduceable, on two different
> > architectures, with two different versions of OpenMPI (1.3.2 and
> > 1.3.3). It was working
,
example outputs. The output of ompi_info --all is attached to this
mail.
Best regards,
--
Vincent LOECHNER |0---0 | ICPS, LSIIT (UMR 7005),
PhD | /| /| | Equipe INRIA CAMUS
