Building ATLAS on an EL5 derivative and noticed a few oddities with the package: FC12 has moved to i686, meaning that the hardcoded i586 for SSE packages doesn't get built. http://koji.fedoraproject.org/koji/buildinfo?buildID=116298 Is hard coding x86 build arches really the best way to go? What's wrong with the ix86 macro? Also, not building SSE for x86_64 feels "wrong" Could alternatives be a nice way to select just one blas implementation (including the atlas-sse variations)? The include files should probably also be "touched" to set the datestamp to a known value and allow RPM to ignore the "conflict" on multiarch platforms. Mark
(In reply to comment #0) > Building ATLAS on an EL5 derivative and noticed a few oddities with the > package: > > FC12 has moved to i686, meaning that the hardcoded i586 for SSE packages > doesn't get built. http://koji.fedoraproject.org/koji/buildinfo?buildID=116298 > Known issue, fixed build will appear in rawhide shortly. > Is hard coding x86 build arches really the best way to go? What's wrong with > the ix86 macro? > > Also, not building SSE for x86_64 feels "wrong" > For now, we build atlas (on Fedora) for x86_64 arch with the least common denominator of sse instruction set (sse3) on all x86_64 cpus. > Could alternatives be a nice way to select just one blas implementation > (including the atlas-sse variations)? > What problem would it be solving?
(In reply to comment #1) > (In reply to comment #0) > > Also, not building SSE for x86_64 feels "wrong" > > > For now, we build atlas (on Fedora) for x86_64 arch with the least common > denominator of sse instruction set (sse3) on all x86_64 cpus. Must have missed that bit, sorry. > > Could alternatives be a nice way to select just one blas implementation > > (including the atlas-sse variations)? > > > What problem would it be solving? Just wondering out loud if there's a nice way to set atlas/goto/netlib as the "default" blas/lapack for a machine, for things like Macaulay2 and numpy. Since atlas implements a standard (blas) API, it would however mean repacking the atlas libs to create a libblas.so Mark