Check for a singular matrix in SDC Newton solve

AMReX-Astro / Castro

Castro (Compressible Astrophysics): An adaptive mesh, astrophysical compressible (radiation-, magneto-) hydrodynamics simulation code for massively parallel CPU and GPU architectures.

http://amrex-astro.github.io/Castro

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Check for a singular matrix in SDC Newton solve #2903

Closed yut23 closed 1 week ago

yut23 commented 1 week ago

PR summary

This checks the result of RHS::dgefa() for templated networks.

PR motivation

Needs AMReX-Astro/Microphysics#1603.

PR checklist

[ ] test suite needs to be run on this PR
[ ] this PR will change answers in the test suite to more than roundoff level
[ ] all newly-added functions have docstrings as per the coding conventions
[ ] the CHANGES file has been updated, if appropriate
[ ] if appropriate, this change is described in the docs