Re: [boost] Results of Cray SV1 regression tests

From: Matthias Troyer (troyer_at_[hidden])
Date: 2003-02-05 17:26:15

On Wednesday, February 5, 2003, at 04:52 PM, Toon Knapen wrote:
> On Wednesday 05 February 2003 10:27, Matthias Troyer wrote:
>> After we get the regrssion tests to work, there will be a special
>> challenge for ublas or MTL-3: Calling the BLAS routine where
>> appropriate will be essential in getting any decent performance on
>> these types of CPUs. Does anybody know what the progress is on calling
>> BLAS from ublas where appropriate?
>
> The BLAS and LAPACK bindings for ublas are not complete yet but the
> most important functions are available.

Great. Is this part of the boost CVS
>
> Recently, Joerg started adding blocked operations (which deteriorate 
> performance
> on vector-processors) so in the future we might need configuration 
> macros to
> indicate if we're on superscalar or vector machines.

That will indeed be useful once we start running large production codes 
with sparse matrices on vector machines. For dense matrices the BLAS 
calls should take care of the optimization?

-- Matthias