[Trilinos-Users] ATLAS and GotoBLAS
Michael A Heroux
maherou at sandia.gov
Mon Jun 18 15:51:12 MDT 2007
Virginia,
We have built with both of these BLAS libraries. You will not see a
performance improvement in the sparse kernels, except for the
Epetra_VbrMatrix class, and even then only with medium to large block sizes.
BLAS performance comes into play when performing operations with
Epetra_MultiVector objects such as a multivector update or block dot
product.
Mike
On 6/18/07 12:25 PM, "Virginia Costa" <virscosta at gmail.com> wrote:
> Hi,
>
> Have anybody already worked with ATLAS and GotoBLAS?
>
> Is there any difference on the Trilinos' performance? Which is the best?
>
> I tried to do some tests with a Epetra_CrsMatrix and the Multiply method,
> but I didn´t see any difference...
>
> Thanks.
>
> Virginia.
>
>
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