Hello > Unfortunately it does not look that simple. OpenBLAS is optimized for z13, but > our s390x port is supposed to support all the z systems (see ).
what about asking for a a z13-support package to the isa-support (source package) maintainer. This way it could be possible to upload an optimise vesion of openblas which can install on recent enought s390x machines. the question will be then : does the buildd support these instructions ? Cheers Fred