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add paragraph on using env variable w from_model

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yardasol 2022-09-08 11:42:37 -05:00
parent aea5628819
commit 37cfd20498
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docs/source/usersguide/depletion.rst
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@ -294,6 +294,14 @@ or from data arrays::
sure your cross sections are in the correct units before passing to a
:class:`~openmc.deplete.IndependentOperator` object.
If you are runnnig :meth:`~openmc.deplete.MicroXS.from_model()` on a cluster
that does not share local filesystems across nodes, you'll need to set an
environment variable so that each MPI process knows where to store output files
used to calculate the microscopic cross sections. In order of priority, they
are `TMPDIR`. `TEMP`, and `TMP`. Users interested in further details can read
the `relevant docpage on the tempfile pacakge <https://docs.python.org/3/library/tempfile.html#tempfile.gettempdir>`_
Caveats
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