[R-SIG-Mac] auto vectorizing gcc?

Jan de Leeuw deleeuw at stat.ucla.edu
Fri Nov 5 08:49:39 CET 2004

Now where would the speedup be coming from ? vecLib
has already been optimized, and vectorizing does not
handle double precision floating point. I am sure it is
possible to write C code (to be loaded into R) that can
be optimized by vectorization, but I am not sure there
is much in the standard R that will benefit a great deal.

On Nov 4, 2004, at 6:54 AM, Paul DeBruicker wrote:

> Anybody compiled R with the Autovectorizing gcc from
> http://hpc.sourceforge.net
> and noticed any speed up?
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Jan de Leeuw; Distinguished Professor and Chair, UCLA Department of  
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