Re: Tochnog now with LAPACK band solver- Works with 64-bit systems

On Wed, 2010-10-06 at 18:56 -0400, [email protected]
wrote:
> 
> Hi Fernando,
> I have built the new version, but have not been able to see much of a
> difference. My platform is 64 bit Ubuntu-lucid 8 GB ram 4 cores. I do
> see time improvements when run with multiple cores but not with lapack
> solver. Maybe the atlas libs (from ubuntu) are not optimized. I'll
> experiment a bit and report on my findings. 

OK. I take it back. It is 38% to 47% faster than the default solver.  I
added one h_refinement to beam3d.dat file. 
default solver    129 sec
lapack solver      80 sec

default+4 cores    55 sec
lapack+4 cores     29 sec

Pretty good speed-up. 

Best
osman


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