issue_comments: 744040595

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https://github.com/pydata/xarray/pull/4672#issuecomment-744040595 https://api.github.com/repos/pydata/xarray/issues/4672 744040595 MDEyOklzc3VlQ29tbWVudDc0NDA0MDU5NQ== 10194086 2020-12-13T17:29:32Z 2020-12-13T17:29:32Z MEMBER

Why do we see that much of a speed-up once we downgrade numba on azure pipelines?

Sometimes it also works fine with numba 0.52... So unfortunately I don't know. My suspicion is that we get different CPUs by chance. I added a new step to our CI: cat /proc/cpuinfo (worked with gitbash on windows). Maybe this reveals something.

On my dualboot machine the test suite takes 23 min on windows and 15 min on linux. Thus, already quite a difference but not as large as on azure where the windows test seem to take about twice as long as the linux tests. 

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