Re: [Help-gsl] Slow BLAS

[Jochen Küpper]

On 22.10.2006, at 10:53, Gong Yi Liao wrote:

>     I find that the Linear algebra subroutines bundled (more specific,
> the BLAS) with GSL1.8 are quite slow, for example, For computing  
> SVD of
> a matrix with high dimension (for example, 1000 by 1000), the GSL BLAS
> (the official cblas, so called gslcblas) take about one minute (56.546
> secs) on my laptop (Intel Duo Core T2300 with 768 ram and 768 swap
> running Ubuntu Linux 6.06.1 LTS), mean while, within the popular
> statistics programming environment, R, it just take less then ten
> seconds (with GotoBLAS, ATLAS is slower than GotoBLAS without
> significant difference) to compute SVD
> the command:

Well, then use the fast BLAS with GSL, it's a simple matter of  
specifying it in the link-step.

Greetings,
Jochen
--
Fritz-Haber-Institut der MPG -- Department of Molecular Physics
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