Re: LAPACK, et al., vs. Numerical Recipes

James Amundson <amundson@xxxxxxxxxxxxxxxxxxxxx> wrote:

Hi,

I am looking for comparisons (i.e., with regards to robustness,
accuracy and speed) between the linear algebra routines from Numerical
Recipes and LAPACK, preferably including ATLAS and/or Goto BLAS.

If NR uses the reference blas (just writing out the loops) then anything
using Atlas or Goto Blas will beat the pants off it in terms of speed.

In terms of accuracy, the solver routines in Lapack are probably better
in error checking, but not necessarily much better. On the other hand,
the eigenvalue routines in Lapack are way more up to date.

Sorry, I know of no comparative studies.

Victor.
--
Victor Eijkhout -- eijkhout at tacc utexas edu
.

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