[gmx-users] Woodcrest results

[vipin sachdeva]

Considering that you are running 4 MPI processes on 4 cores/2 chips 
system, don't you think the  title of the page of the benchmarks is 
misleading -- "Single  processor benchmarks" ? Also, won't we get better 
performance with running threads. I believe the 2 chips are connected 
through a front side bus and  has a globally coherent memory
shared among  the 2 chips ?


Regards
vipin



On Tue, 10 Apr 2007, David van der Spoel wrote:

> vipin sachdeva wrote:
>> 
>> So on the single processor page, the results are mentioned for woodcrest, 
>> which had 4 physical cores. I want to confirm that the results are by 
>> running 4 threads rather than 1 thread?
>> Also the cache mentioned is 6 MB.  Is that per 2 cores or for all the 4 
>> cores ?
>> 
> Since it is a mac pro it is two cpus with two cores each. since it says 4 
> cores, the simulations were run on 4 cores using MPI, not threads.
>
> -- 
> David.
> ________________________________________________________________________
> David van der Spoel, PhD, Assoc. Prof., Molecular Biophysics group,
> Dept. of Cell and Molecular Biology, Uppsala University.
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