On Wed, 2006-11-15 at 15:56 -0500, Peter Bojanic wrote:
> On 2006-11-15, at 12:36 , Peter Bojanic wrote:
>
> > Shane,
> >
> > Regarding the read performance issues you mentioned today...
>
> Some further news...
>
> - Sandia (Redstorm) reports 100% CPU utilization during reads on both
> Linux and Cray systems; they're running Unicos 1.4, based on Lustre
> 1.4.6
>
> ===> Lee, is there a Bugzilla reported by Sandia that describes this
> issue?
Not that I know of. I believe we are supposed to submit one relative to
the block side of Rose.
--Lee
>
> - Indiana University reports a similar read performance drop-off but
> with Lustre 1.4.7.x. I've escalated the following Bugzilla to our IO
> team with the highest priority:
>
> Bug 11194: simultaneous reads of same one stripe file show decrease
> in performance
>
> ===> mjmac, can you please make sure we've got Cluster Surveys for
> both Indiana University and for Rizzo at ORNL so engineering can
> understand the scope of these systems
>
> Thanks,
> Peter
>
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