Clean the getrf permutation

See merge request !516

ctest: restore sytrf tests

Closes #123

See merge request !515

Push the PR !513 further

See merge request !514

testing: cast matrices size multiplication to size_t to avoid int overflow

See merge request !513

Enable non uniform tile sizes

See merge request !505

compute: Query-replace all tile dimension computation by a descripto function call to potentially allow for non regular tiling

testing: add getrf std interface testing and vendor testing

See merge request solverstack/chameleon!511

testing: threads option must be initialized different from 0 in CHAMELEON_TESTINGS_VENDOR mode to avoid a CHAMELEON_Init failure.

testing: add warning if STARPU_FXT_TRACE=1 but no --trace option

See merge request !510

People tend to forget to set --trace option.

add_result.py: trigger a regression error only if the measured gflops value is...

See merge request !509

add_result.py: trigger a regression error only if the measured gflops value is smaller than previous mean

ci: add test_starpu_cuda

See merge request !507