Revalidate multiprocessing; optimize

[mperrin]

Some of the multi-CPU options have not been tested extensively in a while. Needs to be revalidated, and the defaults possible improved. Overall an analysis of performance optimization would be a good idea.

[josePhoenix]

Unfortunately, I seem to be the only one unable to use multiprocessing (mperrin/poppy#23). The performance docs will be updated (#4) to show how to set the relevant options now that they live in POPPY.

[mperrin]

Docs have been updated (thanks!). Apart from the weirdness with multiprocessing instabilities, I would class this as a relatively low-priority item. I think we both expect the multiprocessor stuff to be tricky to dig into, and I would say probably not worth holding up the 0.3 release for at this point?

[josePhoenix]

Agreed. We should make issues that are smaller in scope for specific improvements to multiprocessing. At least for now we have some in POPPY: mperrin/poppy#23 mperrin/poppy#60 mperrin/poppy#54