On Wed, 15 Dec 2021, 3:18 am Eric Snow, <ericsnowcurren...@gmail.com> wrote:
> Hi all, > > I'm still hoping to land a per-interpreter GIL for 3.11. There is > still a decent amount of work to be done but little of it will require > solving any big problems: > > * pull remaining static globals into _PyRuntimeState and PyInterpreterState > * minor updates to PEP 554 > * finish up the last couple pieces of the PEP 554 implementation > * maybe publish a companion PEP about per-interpreter GIL > > There are also a few decisions to be made. I'll open a couple of > other threads to get feedback on those. Here I'd like your thoughts > on the following: > > Do we need a PEP about per-interpreter GIL? > > I haven't thought there would be much value in such a PEP. There > doesn't seem to be any decision that needs to be made. At best the > PEP would be an explanation of the project, where: > > * the objective has gotten a lot of support (and we're working on > addressing the concerns of the few objectors) > * most of the required work is worth doing regardless (e.g. improve > runtime init/fini, eliminate static globals) > * the performance impact is likely to be a net improvement > * it is fully backward compatible and the C-API is essentially unaffected > > So the value of a PEP would be in consolidating an explanation of the > project into a single document. It seems like a poor fit for a PEP. > I think PEP 630 (Petr's summary of the improvements to extension module reloading) is a good example of such a PEP being valuable. Writing such a PEP also provides a place to summarise key design decisions and known limitations (e.g. do the threading module primitives work for cross-interpreter synchronisation? If not, what should be used instead? multiprocessing? Something new that is still to be defined?). Cheers, Nick. > ( <http://python.org/psf/codeofconduct/> >
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