[Pvfs2-users] PVFS2 and openMPI

[Robert Latham]

On Wed, Aug 30, 2006 at 05:46:41PM +0530, Vikrant Kumar wrote:
> Hello,
> 
> We are using openMPI compiled with pvfs2 support and are running into 
> problems with pvfs2-IB( I havent checked pvfs2-TCP). The data being read 
> is not correct, it might be a write issue as well. As I understand 
> openMPI has an older version of ROMIO as compared to the latest mpich2 
> and it might be missing something critical. Any ideas if this is 
> something which is not working right now. I just wanted to check if we 
> are facing a known issue.

Hi Vikrant

The ROMIO that's part of openMPI is pretty old.  It's based of of
romio-1.2.5.1 (which is in their defense the last "official" ROMIO
release we've done).  They've made changes since that version, but I
don't know the extent of those changes.  

I'm pretty sure you've found a bug in their ROMIO.  You should
probably take the issue up with the openmpi guys.  

If you have a small test case and you can send it to me, I can let you
know how well our ROMIO handles it. 

==rob

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