[R-SIG-Mac] BLAS benchmarks on R 2.12.0
michael.m.spiegel at gmail.com
Wed Nov 3 16:49:31 CET 2010
Thank you, I can run off and do some more tests with this information.
I think the culprit on my development machine is that Xcode needs to
be upgraded and then I can use -mtune=core2. I have one small
follow-up question. I thought the compilation flags for building
src/extra/blas had changed from version 2.12.0 to 2.11.1. But you
suggest maybe they haven't changed?
On Wed, Nov 3, 2010 at 6:31 AM, Simon Urbanek
<simon.urbanek at r-project.org> wrote:
> The current build flags for i386 are listed in
> They did not change recently so they were the same for 2.11.1. The compiler used is gcc-4.2 from Xcode 3.1.4 (R is built on OS X 10.5.8) with the corresponding Fortran form the tools page.
> To get back to your problem - did you try the single threaded ATLAS for your problem?
I did try ATLAS and did not see performance improvements. But that
attempt was without -mtune=core2.
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