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Add an FAQ entry about a certain GPU-aware MPI error #4811

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Nov 20, 2025
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Add an FAQ entry about a certain GPU-aware MPI error #4811

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7 changes: 7 additions & 0 deletions Docs/sphinx_documentation/source/Faq.rst
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Expand Up @@ -172,6 +172,13 @@ to the device and pass a device pointer function object `DevicePtrIF` into the `
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**Q.** I'm getting errors when running with GPU-aware MPI

**A.** While other problems may exist. One thing to check, if the machine is using Slurm, is the `cgroup.conf` file. If it contains `ConstrainDevices=yes`, then IPC can be impacted, which means bindings such as `--gpu-bind=closest` should not be used. Instead try `--gpu-bind=none`.

.. _`This Slurm issue provides more information`: https://support.schedmd.com/show_bug.cgi?id=17875


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