We said it before, but it bears repeating: BLAS is an interface. So unless you use on a static library build, these library can be switch after compilation and at essentially any point in time. My (unfinished) package gcbd shows how in its simple and vignette by comparing a number of BLAS implementations. See the (now dated) chart on page 9 of https://cran.rstudio.com/web/packages/gcbd/vignettes/gcbd.pdf or this (old) blog post http://dirk.eddelbuettel.com/blog/2010/10/03/
While the charts could do with an update, they do show how eg reference blas is clearly outperformed by Atlas or GotoBLAS (the predecessor to OpebBLAS). Hope this helps, Dirk -- http://dirk.eddelbuettel.com | @eddelbuettel | e...@debian.org ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
