From: David Turner (dpturner_at_rasta.nersc.gov)
Date: 08/23/2001
Greetings NERSC PVP User, Today, Thursday August 23, at 16:00 PDT, the PVP cluster will be taken down. Running batch jobs will be checkpointed, and then restarted when the cluster is returned to service. Interactive jobs will be terminated. The purpose of this downtime is to install an additional four SV1 processors into Killeen. This will bring its processor count to 20; the batch machines will remain unchanged with 24 processors. This will improve interactive response for all users, as well as provide slightly more batch capability for the limited batch jobs that are run on Killeen. Also, we recently increased the batch time limits from 120 hours to 180 hours for the st_80 and st_256 queues on all three machines. Note that the time limit for mt_512 queue remains at 120 hours on Bhaskara and Seymour (this queue is not present on Killeen). We intend on leaving these limits in place until October 1, when we typically review all such system limits. As always, I would be very interested in hearing your thoughts on the configuration and management of the PVP cluster. Best regards, David Turner User Services Group email: dpturner@nersc.gov NERSC Division phone: (510) 486-4027 Lawrence Berkeley Lab fax: (510) 486-4316
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