I understand and agree that it is a feature; I just should have realized that crossprod using a fast BLAS is an unfair comparison to non-BLAS using routines. Then again, it's another reason to use fast BLAS's. I wish that R for windows would allow the use of an optimized LAPACK too. Oh well.
Thanks, Avi On Sun, Apr 27, 2014 at 3:01 PM, Dirk Eddelbuettel <e...@debian.org> wrote: > > On 27 April 2014 at 14:34, Avraham Adler wrote: > | I feel foolish now. I forgot to note that I build R using a Win64 > | version of OpenBLAS (see > | <http://www.avrahamadler.com/2014/04/20/r-3-1-0-openblas-speed-comparisons/> > | for more). I'm certain that the speed in tcrossprod is coming from an > | optimized compile of R and BLAS. My apologies for any confusion. > > That is a _feature_ and not a bug. See eg this r-devel tread from 2005: > > http://thread.gmane.org/gmane.comp.lang.r.devel/2370/ > > Oh the good old days when Doug Bates still posted on r-devel ... > > Dirk > > -- > Dirk Eddelbuettel | e...@debian.org | http://dirk.eddelbuettel.com _______________________________________________ Rcpp-devel mailing list Rcpp-devel@lists.r-forge.r-project.org https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel
