test_ident_zeros in test_matrix.py is very slow

[Prof Garth Wells]

The test test_ident_zeros in test_matrix.py close to 100 times slower than any of the other tests in the file. It should be made much faster.

[Jan Blechta]

I seem to be the author of the test.

[Jan Blechta]

Is it really an issue if the test takes 0.8 seconds?

[Jan Blechta]

Timings produced with

python -mpytest test_matrix.py -sv --durations=0

show that both the setup of the test and the actual test takes 0.04s for each backend. This is totally perfect compared to other tests. There had to be something wrong with a backend. Can you still reproduce the problem, @garth-wells ?

[Jan Blechta]

Isn't it happening on Tpetra backend? Now I have a build without Tpetra.

[Jan Blechta]

@chris_richardson, could you, please, check what is the timinig with Tpetra?

cd test/unit/python/la
python -mpytest test_matrix.py -sv --durations=0

[Chris Richardson]

Tpetra is not included in the test - if it was, I think it would fail in many places.

[Jan Blechta]

Thanks, Chris. I cannot reproduce the original problem. Can you, @garth-wells ? If not, I will remove the slow mark and close the issue.

[Jan Blechta]

Fixed in 9b9214e

[Anders Logg (Chalmers)]

Removing milestone: 1.7 (automated comment)