[gmx-developers] GROMACS performance on Opteron Dual Core processors!

[Christian Burisch]

Kazem Jahanbakhsh wrote:
> Hi everybody,

Hi Kazem,

> Dual Core platform. From your benchmark table we saw that for
> single Opteron processor we have a performance about 393
> picoseconds of simulation time per day (by Intel 8 compiler) and
> for single Opteron-DC we have  performance about 450 instead of
> ideal expected performance about 2*393 (by gcc 3.4.3 compiler) .

"N" means number of cores, not processors.

> According with these results and by considering cost per
> performance ratio it seems that Single-Core architecture is better
> than advanced Dual-Core architecture. 

No. Dual core architecture is superior, and as David already pointed 
out (and as was already posted on this list) the latest Intel Core 2 
Duo Xeon 5100 "Woodcrest" seems to beat the Opterons slightly.

Regards

Christian