[R] Tuned Rblas.dll available on CRAN (for Windows)

Prof Brian D Ripley ripley at stats.ox.ac.uk
Mon Jun 24 11:07:40 CEST 2002

There is a new area on CRAN


which contains Rblas's compiled against ATLAS 3.4.1 for various chips.  To
use one of these, just rename rw1051\bin\Rblas.dll and drop the replacment
in its place.  Using a tuned BLAS will be noticeably faster only on some
linear-algebra calculations, notably those using La.svd and La.eigen (which
might be twice as fast).

There are versions there for Pentium II and 4, and for AthlonXP.  A version
for Pentium III will be available later this week.  (If you have a
high-performance system, in particular one with dual processors or some
sort of Xeon, you ought to build ATLAS and Rblas.dll on the target system.)

In theory at least the same Rblas.dll will work with rw1050, rw1051 and the
development versions of R.

Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272860 (secr)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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