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Disable eigen vectorization by default. #1919
Hopefully that will solve the issue for ever. I'll test this by next week.
IMHO now is the time to write some "How to improve OGS speed" tutorial. About fixed vs. dynamic matrices, vectorization (and issues with Eigen 3.3), shared libs, maybe also referring to some compile and runtime test results.
Who will do that?
For me the ctests now run. Please answer my two comments about
@fparisio is on vacation this week AFAIK, so I think we should merge this without him having tested this PR, yet.
Further comment: Some of the ctests are very sensitive towards the number of OpenMP threads when solved with LIS, e.g., they fail with one thread, but succeed with either two or three threads.