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Date: Sun, 04 Jun 2006 18:04:54 -0400
From: Ivan Adzhubey <iadzhubey@rics.bwh.harvard.edu>
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Subject: Re: [sisyphus] ATLAS vs BLAS performance
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On Sunday 04 June 2006 17:05, Alexey Tourbin wrote:
> Я разобрался, как надо собирать ATLAS.
> Вот предварительный benchmark.
>
> Fortran BLAS:
> > mm <- matrix(rnorm(10^6), ncol = 10^3)
> > system.time(crossprod(mm))
>
> [1] 1.572 0.004 1.580 0.000 0.000
>
> ATLAS w/ SSE2:
> > mm <- matrix(rnorm(10^6), ncol = 10^3)
> > system.time(crossprod(mm))
>
> [1] 0.344 0.020 0.369 0.000 0.000

А вот с GotoBLAS 1.2 (P4 2.8GHz, R 2.3.0):

> mm <- matrix(rnorm(10^6), ncol = 10^3)
> system.time(crossprod(mm))
[1] 0.232 0.012 0.270 0.000 0.000


-- 
Иван