Optimized python builds

[hmaarrfk]

@jjhelmus my optimzied python builds timed out.

https://app.shippable.com/github/Archiconda/python-feedstock/dashboard

I'm also unsure about doing the Optimization on a CI. Seems a little spooky especially since this CI has a 96 core machine!!!!

I assume they have dual cravium processors
https://www.marvell.com/server-processors/thunderx-arm-processors/

Do you want to run the builds on your hardware?

[jjhelmus]

I built an optimized version of Python 3.7.2 on my hardware which took a little over 2 hours. Most of the PGO must be done single threaded so having more cores does not speed up the build. The package can be found in the c4aarch64 channel.

The recipe is available in the conda4aarch repo. It tracks the version from the AnacondaRecipes feedstock which has a few minor difference from the conda-forge recipe.

[hmaarrfk]

Nice!!! It will be cool to benchmark the difference that it has on real applications.