[PVFS2-users] using ROMIO interface

Robert Latham robl at mcs.anl.gov
Thu Oct 14 14:51:23 EDT 2004


On Thu, Oct 14, 2004 at 02:28:23PM -0400, Weikuan Yu wrote:
> Can anybody provide a pointer about some guide to run ROMIO over 
> PVFS/PVFS2 in user space, i.e., without VFS support?
> 
> Many thanks in advance,

http://www.pvfs.org/pvfs2/pvfs2-quickstart.html#sec:romio
has some information about configuring MPICH2 for PVFS2 support.

When your MPI-IO program opens a file, it should prefix the file name
with "pvfs2:".   You do not need to have the PVFS2 file system mounted
through the VFS, but you should add an entry for PVFS2 to your
/etc/fstab.  

Are you asking how to configure ROMIO with PVFS2 support, or are you
asking how to tell an MPI-IO application to use PVFS2 routines?

==rob

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


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