[Pw_forum] Problem with QE 4.2.1 and AMD Opteron 6200 / 6300

[Fabricio Cannini]

Em 11-12-2013 15:51, Paolo Giannozzi escreveu:
> On Tue, 2013-12-10 at 19:49 -0200, Fabricio Cannini wrote:
>> Em 10-12-2013 18:34, Paolo Giannozzi escreveu:
>>> First of all you should verify if multi-threading libraries
>>> are conflicting with MPI parallelization.
>>
>> Yes, i did look into it already.


Hi there


So, what else can I look into ?
I did more tests, on the same Opteron 6380 machine, using the same 
binaries, but now using the "DEISA medium benchmark" and the results 
were interesting.

http://qe-forge.org/gf/project/q-e/frs/?action=FrsReleaseView&release_id=45


ifort 13.2 + mkl 11.0 / 8 cores		= 1h8m
gfortran 4.6 + openblas 0.2.8 / 8 cores	= 46m57.62s



This is making me even more suspicious of intel compiler being the problem.

TIA,
Fabricio