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?
- 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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