Hi,
The Intel compilers are only recommended for pre-Bulldozer AMD
processors (K10: Magny-Cours, Intanbul, Barcelona, etc.). On these,
PME non-bonded kernels (not the RF or plain cut-off!) are 10-30%
slower with gcc than with icc. The icc-gcc difference is the smallest
with gcc 4.7, typically arou
>You're using a real-MPI process per core, and you have six cores per
I was using the current setup, which is indeed not fully optimized, just to see
how much the speed-up is between intel and gcc compiled.
>processor. The recommended procedure is to map cores to OpenMP
>threads, and choose th
On Tue, Jun 25, 2013 at 5:46 PM, Pedro Lacerda wrote:
> On Tue, Jun 25, 2013 at 8:53 AM, Mark Abraham wrote:
>
>> You're using a real-MPI process per core, and you have six cores per
>> processor. The recommended procedure is to map cores to OpenMP
>> threads, and choose the number of MPI processe
On Tue, Jun 25, 2013 at 8:53 AM, Mark Abraham wrote:
> You're using a real-MPI process per core, and you have six cores per
> processor. The recommended procedure is to map cores to OpenMP
> threads, and choose the number of MPI processes per processor (and
> thus the number of OpenMP threads per
On Tue, Jun 25, 2013 at 12:11 PM, Djurre de Jong-Bruinink
wrote:
> Dear Gromacs developers/users,
>
> After suggestions on this mailing list to use intel over gcc compilers, we
> recently obtained the newest intel compilers (2013.4.183). I was kind of
> disappointed to find that there is no spee
Dear Gromacs developers/users,
After suggestions on this mailing list to use intel over gcc compilers, we
recently obtained the newest intel compilers (2013.4.183). I was kind of
disappointed to find that there is no speed-up at all when comparing a gcc and
intel compiled g4.6.2. Is this expect
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