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Date: Mon, 5 Jun 2006 01:05:46 +0400
From: Alexey Tourbin <at@altlinux.ru>
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Subject: [sisyphus] ATLAS vs BLAS performance
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=F1 =D2=C1=DA=CF=C2=D2=C1=CC=D3=D1, =CB=C1=CB =CE=C1=C4=CF =D3=CF=C2=C9=D2=
=C1=D4=D8 ATLAS.
=F7=CF=D4 =D0=D2=C5=C4=D7=C1=D2=C9=D4=C5=CC=D8=CE=D9=CA benchmark.

Fortran BLAS:

> mm <- matrix(rnorm(10^6), ncol =3D 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 =3D 10^3)
> system.time(crossprod(mm))
[1] 0.344 0.020 0.369 0.000 0.000

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