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Slides from Sep 27 2018 User Group meeting (updated Nov 28)  Juno_UG_092018_final.pdf

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Configuration change list:

November 28, 2018: The default OS type is CentOS07. Please, check "Job Submission"

Differences in LSF Configuration between

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Juno and luna

1. We reserve ~12GB of RAM per host for the operating system and GPFS on Juno CentOS 7 hosts.
2. On each jx## node (CentOS 7, GPFS installed), 240GB of RAM is available for LSF jobs.
3. On each ju## node (CentOS 6, no GPFS), 250GB of RAM is available for LSF jobs.
4. When specifying RAM for LSF jobs, specify GB of RAM per task (slot) on juno Juno (unlike luna, where RAM is specified per job).
5. All jobs must have -W (maximum execution Walltime) specified on junoJuno. Please do not use -We on junoJuno.
6. There is no /swap on CentOS 7 nodes. Memory usage is enforced by cgroups so jobs never swap. A job will be terminated if memory usage exceeds its LSF specification.
7. To check jobs which are DONE or status EXIT, use "bhist -l JobID" or "bhist -n 0 -l JobID". bacct is also available. "bjobs -l JobID" only shows RUNNING and PEND jobs.
8. There is no iounits resource on junoJuno.
9. CMOPI SLA configured on junoJuno. The loan policies are: 100% resources for 90 mints jobs for not SLA users, and 75% resources for 240 mints jobs for not SLA users.

Queues

The juno Juno cluster uses LSF (Load Sharing Facility) 10.1FP6 from IBM to schedule jobs. The default queue, ‘general’, includes all Juno compute nodes.

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