On Mon, Mar 25, 2024 at 2:24 PM Matěj Cepl <mc...@cepl.eu> wrote: > Hello, > > As a maintainer of Python packages for openSUSE/SUSE, > I would like to ask for help with our bug > https://bugzilla.suse.com/1221902. It seems to us that the latest > version of NumPy suddenly requires z15 CPU generation, although > it used to be OK with z13+ before, and unfortunately that is the > level of the CPU support we standardize in openSUSE. > > Is it true? If so, when this change happened and why? How > could we push numpy to work with older processors?
I think that is true. https://numpy.org/neps/nep-0054-simd-cpp-highway.html#supported-features-targets mentions support for Z14/Z15, and https://github.com/numpy/numpy/pull/25563#issuecomment-1889798367 touches on Z14 support having an issue. So I think Z14 is the minimum. > Is there anything more to do than just switch of particular features in > `--cpu-dispatch`? > I suspect not, assuming that that works. If Z13 support is an important use case where the performance difference matters a lot, maybe you can bring up getting partial or even full support back in NumPy. Most NumPy maintainers won't know much/anything about s390x though, so that may require contributions and be nontrivial. Another, more feasible option would be to auto-disable the SIMD features, emit a warning, and then continue rather than fail the NumPy build on Z13 by default. Cheers, Ralf > > Thank you for any reply, > > Matěj Cepl > > -- > http://matej.ceplovi.cz/blog/, @mcepl@floss.social > GPG Finger: 3C76 A027 CA45 AD70 98B5 BC1D 7920 5802 880B C9D8 > > I was quite depressed two weeks ago when I spent an afternoon at > Brentano's Bookshop in New York and was looking at the kind of > books most people read. Once you see that you lose all hope. > -- Friedrich August von Hayek > > _______________________________________________ > NumPy-Discussion mailing list -- numpy-discussion@python.org > To unsubscribe send an email to numpy-discussion-le...@python.org > https://mail.python.org/mailman3/lists/numpy-discussion.python.org/ > Member address: ralf.gomm...@gmail.com >
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