Known issues/en: Difference between revisions

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(Updating to match new version of source page)
(Updating to match new version of source page)
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== Scheduler issues ==
== Scheduler issues ==


* The CC Slurm configuration encourages whole-node jobs. When appropriate, users should request whole-node rather than per-core resources. Read about [[Job_scheduling_policies#Whole_nodes_versus_cores|whole node scheduling]].
No known issues at this time.
* 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 ==
== Quota and filesystem problems ==
=== Quota errors on /project filesystem ===
* This topic has been moved to [[Frequently Asked Questions]].


=== Nearline ===
=== Nearline ===
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** July 17 update: still not working. If you need your nearline RAC2017 quota, contact [[Technical Support|technical support]].  
** July 17 update: still not working. If you need your nearline RAC2017 quota, contact [[Technical Support|technical support]].  


=== Missing symbolic links to project folders ===
=== Missing project folder ===
* Upon login to the new clusters, symbolic links are not always created in the user's account, as described in [[Project layout]]. If this is the case, please verify that your access to the cluster is enabled on this page [https://ccdb.computecanada.ca/services/resources https://ccdb.computecanada.ca/services/resources].
* Upon creation of a new account for a Principal Investigator, the [[Project layout|PROJECT]] storage space might not be allocated until the next business day.


= Cedar only =
= Cedar only =
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* Crontab is not offered on Graham.
* Crontab is not offered on Graham.
= Other issues =
#Modules don't work for shells other than bash(sh) and tcsh.
#*Workaround: (this appears to work but not tested extensively)
#**<tt>source $LMOD_PKG/init/zsh</tt>
#**<tt>source $LMOD_PKG/init/ksh</tt>

Revision as of 19:15, 24 August 2018

Other languages:

Report an issue

Shared issues

  • The status page at http://status.computecanada.ca/ is not updated automatically yet, so may lag in showing current status.
  • CC Clusters are vulnerable to the recent Meltdown/Spectre vulnerabilities, and will be updated, which involves updating the OS and CPU microcode. Read more at Meltdown and Spectre bugs.

Scheduler issues

No known issues at this time.

Quota and filesystem problems

Nearline

Missing project folder

  • Upon creation of a new account for a Principal Investigator, the PROJECT storage space might not be allocated until the next business day.

Cedar only

Nothing to report at this time.

Graham only

  • Compute nodes cannot access Internet
    • Solution: Contact technical support to request exceptions to be made; describe what you need to access and why.
  • Crontab is not offered on Graham.
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