Known issues: Difference between revisions

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* Utilization accounting is not currently being forwarded to the [https://ccdb.computecanada.ca Compute Canada database].
* Utilization accounting is not currently being forwarded to the [https://ccdb.computecanada.ca Compute Canada database].


== Scheduler problems == <!--T:6-->
== Scheduler issues == <!--T:6-->
* The CC Slurm configuration encourages whole-node jobs. When appropriate, users should request whole-node rather than per-core resources. See [[Job_scheduling_policies#Whole_nodes_versus_cores;|Job Scheduling - Whole Node Scheduling]].
* The CC Slurm configuration encourages whole-node jobs. When appropriate, users should request whole-node rather than per-core resources. See [[Job_scheduling_policies#Whole_nodes_versus_cores;|Job Scheduling - Whole Node Scheduling]].
* CPU and GPU backfill partitions have been created on the Cedar and Graham clusters. If a job is submitted with <24hr runtime, it will be automatically entered into the cluster-wide backfill partition. This partition has low priority, but will allow increased utilization of the cluster by serial jobs.
* CPU and GPU backfill partitions have been created on the Cedar and Graham clusters. If a job is submitted with <24hr runtime, it will be automatically entered into the cluster-wide backfill partition. This partition has low priority, but will allow increased utilization of the cluster by serial jobs.
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** This has been greatly improved after the addition of the epilog.clean script, but there are still nodes occasionally marked down for epilog failure.  
** This has been greatly improved after the addition of the epilog.clean script, but there are still nodes occasionally marked down for epilog failure.  
* 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 <tt>--export=none</tt> or add <tt>#SBATCH --export=NONE</tt> to your job script.
* 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 <tt>--export=none</tt> or add <tt>#SBATCH --export=NONE</tt> to your job script.


== Quota and filesystem problems == <!--T:7-->
== Quota and filesystem problems == <!--T:7-->
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