Hi, I don't have a preferred default BLAS implementation. IIUC BLAS is the original implementation, the standard. OpenBLAS does more or less the same as BLAS, while on one hand it was or is missing some compatibility, on the other hand depending on the used CPU, it chose different routines optimized to the CPU's instruction sets, hence OpenBLAS is faster. IIUC the problem with competing implementations is fixing bugs. IIUC... IOW my understanding is, that I don't understand anything at all related to this topic. Out of feeling and because OpenBLAS was already installed in the old version, I decided to run $ sudo pacman -Syu blas-openblas [snip] :: blas-openblas and cblas are in conflict. Remove cblas? [y/N] y :: blas-openblas and lapack are in conflict. Remove lapack? [y/N] y Packages (6) cblas-3.11.0-2 [removal] duktape-2.7.0-6 glslang- 12.2.0-1 lapack-3.11.0-2 [removal] openblas-0.3.23-3 blas- openblas-0.3.23-3 [snip] I don't like having options as long as I have no idea if my choice will make a difference or not and how that decision might affect usage. Is it possible to explain the pros and cons of the two implementations in simple terms? Regards, Ralf
