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Add segfault on login node to known issues #231

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Mar 20, 2020
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Add segfault on login node to known issues #231

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10 changes: 9 additions & 1 deletion systems/summit_user_guide.rst
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Expand Up @@ -3126,11 +3126,19 @@ please see the `Vampir Software Page <https://www.olcf.ornl.gov/software_package
Known Issues
============

Last Updated: 01 February 2020
Last Updated: 20 March 2020

Open Issues
-----------

Segfault when running executables on login nodes
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Executing a parallel binary on the login node or a batch node without using the job step launcher ``jsrun`` will result in a segfault.

This also can be encountered when importing parallel Python libraries like ``mpi4py`` and ``h5py`` directly on these nodes.

The issue has been reported to IBM. The current workaround is to run the binary inside an interactive or batch job via ``jsrun``.

Nsight Compute cannot be used with MPI programs
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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