[Pvfs2-users] File affinity and CPU resource scheduling concerns when using compute node as a PVFS server

[Chris Worley]

I haven't looked at PVFS for nearly a decade, so my understanding
could be way out of date.  Sorry if this is a stupid question; I'm
hoping PVFS might fill some requirements I'm looking at.

Is it typical to use compute nodes as PVFS file servers?  Is it even
possible (i.e. it isn't w/ Lustre)?

If so, while striping across I/O nodes looks to be the default, is
there any provision for file affinity... i.e. files migrating to the
nodes using them?

If striping is the only choice, and compute nodes serve the I/O too,
then a job running on one set of nodes could be using files striped
across another set of nodes in use by another job, causing both jobs
to loose performance, correct?

Are there any links to PVFS performance over IB?

Thanks,

Chris