[Bug 1389971] Review Request: elemental - distributed-memory dense and sparse-direct linear algebra and optimizatio

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https://bugzilla.redhat.com/show_bug.cgi?id=1389971



--- Comment #22 from Ryan H. Lewis (rhl) <me@xxxxxxxxxxxxx> ---
I've spent some quality time debugging Elementals failing PPC examples and
tests. 

There is nothing obvious to point to in Elemental. There appears to be some
vanilla C++ code which works on every architecture but is producing a
segmentation fault on PPC64. I suspect this is a gcc compiler bug (in the
optimizer) when building for ppc, as it only appears in Release mode. 

I cannot seem to produce a minimal test case which actually replicates this
issue (without Elemental that is), so I am not sure it even makes sense yet to
file a bug.

Hopefully this warrants us not needing to support PPC builds in order to get
through the review. As soon as this is fixed we should definitely build El for
PPC.

I've submitted a scratch build to koji for the release version of Elemental.
Also, I have produced a second spec file, instead of the one used with master: 

https://raw.githubusercontent.com/elemental/Elemental/master/redhat/elemental-release.spec

I have a scratch build running (including all architectures, even ppc which I
know will fail). I'll post the results shortly.

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