cc_staff
176
edits
Known issues: Difference between revisions
Jump to navigation
Jump to search
m
no edit summary
mNo edit summary |
mNo edit summary |
||
| Line 8: | Line 8: | ||
== Scheduler errors == <!--T:6--> | == Scheduler errors == <!--T:6--> | ||
* The CC slurm configuration preferentially encourages whole-node jobs. Users should if | * The CC slurm configuration preferentially encourages whole-node jobs. Users should, if appropriate, request whole-node rather than per-core resources. See [[Job_scheduling_policies#Whole_nodes_versus_cores;|Job Scheduling - Whole Node Scheduling]] ([[User:Pjmann|Patrick Mann]] 20:15, 17 July 2017 (UTC)) | ||
** Cpu and Gpu backfill partitions have been created on both clusters. If a job is submitted with <24hr runtime, it will be automatically entered into the cluster-wide backfill partition. This partition has a low priority, but will allow increased utilization of the cluster by serial jobs. ([[User:Nathanw|Nathan Wielenga]]) | ** Cpu and Gpu backfill partitions have been created on both clusters. If a job is submitted with <24hr runtime, it will be automatically entered into the cluster-wide backfill partition. This partition has a low priority, but will allow increased utilization of the cluster by serial jobs. ([[User:Nathanw|Nathan Wielenga]]) | ||
* SLURM epilog does not fully clean up processes from ended jobs, especially if the job did not exit normally. ([[User:Gbnewby|Greg Newby]]) Fri Jul 14 19:32:48 UTC 2017) | * SLURM epilog does not fully clean up processes from ended jobs, especially if the job did not exit normally. ([[User:Gbnewby|Greg Newby]]) Fri Jul 14 19:32:48 UTC 2017) | ||
| Line 14: | Line 14: | ||
* Operations will occasionally time out with a message like "Socket timed out on send/recv operation" or "Unable to contact slurm controller (connect failure)". As a temporary workaround, attempt to resubmit your jobs/commands, they should go through in a few seconds. ([[User:Nathanw|Nathan Wielenga]]) 08:50, 18 July 2017 (MDT)) | * Operations will occasionally time out with a message like "Socket timed out on send/recv operation" or "Unable to contact slurm controller (connect failure)". As a temporary workaround, attempt to resubmit your jobs/commands, they should go through in a few seconds. ([[User:Nathanw|Nathan Wielenga]]) 08:50, 18 July 2017 (MDT)) | ||
** Should be resolved after a VHD migration to a new backend for slurmctl. (NW) | ** Should be resolved after a VHD migration to a new backend for slurmctl. (NW) | ||
* | * By default, the job receives environment settings from the submitting shell. This can lead to irreproducible results if it's not what you expect. | ||
To force the job to run with a fresh-like-login environment, you can submit with --export=none or add <tt>#SBATCH --export=NONE</tt> to your job script. | |||
== Quota and filesystem problems == <!--T:7--> | == Quota and filesystem problems == <!--T:7--> | ||