[MPICH] MPI Won't Write to PVFS2

[Robert Latham]

On Wed, Apr 18, 2007 at 07:43:54PM -0500, Erich Peterson wrote:
>    I am trying to call MPI_Write_shared, if I run my program within
>    my Linux filesystem everything runs fine. If I run it on PVFS2 it
>    throws a MPI::Exception. I don't think it is the permissions on
>    the directories, and I did configure MPICH2 to install ROMIO to
>    work with PVFS2 (e.g. --with-pvfs2).
>  
>    Does anyone have any idea why this is?

The shared file pointer routines are not supported on a few file
systems, including PVFS v2.  MPI-IO Atomic mode isn't supported
either.  

==rob

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