# \#cgroups

**URL:** https://ask.cyberinfrastructure.org/tag/cgroups/112.md

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## [Some of your processes may have been killed by the cgroup out-of-memory handler](https://ask.cyberinfrastructure.org/t/some-of-your-processes-may-have-been-killed-by-the-cgroup-out-of-memory-handler/1348)

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**Author:** [@antoinearnoud](https://ask.cyberinfrastructure.org/u/antoinearnoud)\
**Replies:** 1\
**Last updated:** [April 30, 2020, 3:30pm UTC](https://ask.cyberinfrastructure.org/t/some-of-your-processes-may-have-been-killed-by-the-cgroup-out-of-memory-handler/1348 "2020-04-30T15:30:24Z")

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Hi, I sometimes encounter the following error. /var/spool/slurm/d/job55019920/slurm\_script: line 16: 13119 Killed python functions\_to\_select\_pages.py --sample sample7500 slurmstepd: error: Detected 3 o…

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## [What are cgroups and how are people using them for cluster administration?](https://ask.cyberinfrastructure.org/t/what-are-cgroups-and-how-are-people-using-them-for-cluster-administration/26)

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**Author:** [@ktrn](https://ask.cyberinfrastructure.org/u/ktrn)\
**Replies:** 2\
**Last updated:** [November 26, 2019, 2:40am UTC](https://ask.cyberinfrastructure.org/t/what-are-cgroups-and-how-are-people-using-them-for-cluster-administration/26 "2019-11-26T02:40:50Z")

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I have heard that cgroups might be very useful for cluster administrators. Could someone explain what cgroups are and how they are used?

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## [Cgroups with MPI process affinity](https://ask.cyberinfrastructure.org/t/cgroups-with-mpi-process-affinity/367)

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**Author:** [@ewalter](https://ask.cyberinfrastructure.org/u/ewalter)\
**Replies:** 1\
**Last updated:** [August 2, 2018, 6:11pm UTC](https://ask.cyberinfrastructure.org/t/cgroups-with-mpi-process-affinity/367 "2018-08-02T18:11:35Z")

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Hi all, We have recently upgraded to using Torque with cgroups. We have been happy with the use of cgroups in general however, I have recently found that MPI process affinity usually does nothing to improve run times a…