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From: Robert Latham (robl_at_[hidden])
Date: 2007-09-14 13:27:50

On Fri, Sep 07, 2007 at 10:18:55AM -0400, Brock Palen wrote:
> Is there a way to find out which ADIO options romio was built with?

not easily. You can use 'nm' and look at the symbols :>

> Also does OpenMPI's romio come with pvfs2 support included? What
> about Luster or GPFS.

OpenMPI has shipped with PVFS v2 support for a long time. Not sure
how you enable it, though. --with-filesystems=ufs+nfs+pvfs2 might
work for OpenMPI as it does for MPICH2.

All versions of ROMIO support Lustre and GPFS the same way: with the
"generic unix filesystem" (UFS) driver. Weikuan Yu at ORNL has been
working on a native "AD_LUSTRE" driver and some improvements to ROMIO
collective I/O. Likely to be in the next ROMIO release.

For GPFS, the only optimized MPI-IO implementation is IBM's MPI for
AIX. You're likely to see decent performance with the UFS driver,


Rob Latham
Mathematics and Computer Science Division    A215 0178 EA2D B059 8CDF
Argonne National Lab, IL USA                 B29D F333 664A 4280 315B