[R-SIG-Mac]timing R and R and R and R

Thomas Lumley tlumley@u.washington.edu
Sat, 17 Nov 2001 11:42:23 -0800 (PST)


On Sat, 17 Nov 2001, Jan de Leeuw wrote:

> I guess this implies that my ATLAS, which is the one used in the
> CRAN Darwin distribution, may not be optimal for your machine.
>

Yes. It's going to be better than the default BLAS routines, partly
because any sensible loop unrolling helps and partly because Macs aren't
*that* different, but people who compile their own ATLAS should see even
more improvement on large matrix operations.

	-thomas