Hi,
I am looking around for information about parallel filesystems supported
for MPI I/O.
Clearly, GFPS, Lustre are fully supported, but what about others?
- CephFS
- pNFS
- Other?
when I "grep" for "pnfs\|cephfs" into ompi source code, I found nothing...
Otherwise I found this into ompi/
Eric,
generally speaking, ompio should be able to operate correctly on all file
systems that have support for POSIX functions. The generic ufs component is
for example being used on BeeGFS parallel file systems without problems, we
are using that on a daily basis. For GPFS, the only reason we
Thanks for your answer Edgard!
In fact, we are able to use NFS and certainly any POSIX file system on a
single node basis.
I should have been asking for: What are the supported file systems for
*multiple nodes* read/write access to files?
For nfs, MPI I/O is known to *not* work on NFS when
-Original Message-
From: Eric Chamberland
Thanks for your answer Edgard!
In fact, we are able to use NFS and certainly any POSIX file system on a single
node basis.
I should have been asking for: What are the supported file systems for
*multiple nodes* read/write access to files?
->
let me amend my last email by making clear that I do not recommend using NFS
for parallel I/O. But if you have to, make sure your code does not do things
like read-after-write, or multiple processes writing data that ends up in the
same file system block (can often be avoided by using collective
