[Posting, as this may be of general interest.] Steven Munroe <munroesj52@xxxxxxxxx> writes: > Now that pveclib <https://munroesj52.github.io/> is safely integrated as a > Fedora package and Fedora 31 is released, I though it was time to offer my > expertise to package developers doing vector code. Thanks. One possibility is the BLIS linear algebra library. It provides a BLAS interface, with which I guess means something if you do SIMD implementation. It currently has sub-optimal support on ppc64le, since it uses generic C, not tuned code. (GCC does vectorize the C -- despite the continuing doubts of the developers! -- but I don't currently have access to POWER9 for measurements to find out how it actually performs.) IBM were supposed to be contributing a tuned implementation, but that hasn't appeared, so I assume one would be welcome. There's a single micro-kernel to implement at a minimum, though it might need separate ones for POWER 8 and 9. The project home is https://github.com/flame/blis. Un-merged code to dispatch dynamically on POWER micro-architecture is under https://github.com/flame/blis/pull/345 but isn't necessary. [Reasons to prefer BLIS over OpenBLAS generally are support for AVX512 on x86_64 and potentially better threaded performance <https://github.com/flame/blis/blob/master/docs/Performance.md>. However, lack of dynamic micro-architecture selection for POWER and ARM in the current release is a drawback, and OpenBLAS has more hand-tuning of various operations that probably help some applications.] _______________________________________________ scitech mailing list -- scitech@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to scitech-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/scitech@xxxxxxxxxxxxxxxxxxxxxxx
