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OPTERON SHANGHAI / ESTAMBUL versus INTEL NEHALEM |
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October 29, 2009, 07:48 |
OPTERON SHANGHAI / ISTANBUL versus INTEL NEHALEM
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#1 |
Member
Patricio Bohorquez
Join Date: Mar 2009
Location: Jaén, Spain
Posts: 95
Rep Power: 17 |
Hi mates,
On the one hand, I am now testing a platform with 2 processors Istanbul 2435 @ 2.6GHz which are connected on the mainboard. This amounts to a total of 12 cores. On the other hand, I running the same numerical simulation in a computational node with 2 processors Nehalem E5520 @ 2.27GHz and Shanghai 8382 @ 2.6GHz. The latter amounts to 8 cores. When running a parallel icoFoam case I found that the performance of Nehalem is much better than Istanbul. Do you know how could I optimize OpenFOAM for Istanbul? Thanks Patricio Last edited by pbohorquez; October 29, 2009 at 08:23. |
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October 30, 2009, 10:22 |
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#3 |
New Member
Rui Da Silva Lourenco
Join Date: Oct 2009
Location: France
Posts: 2
Rep Power: 0 |
hello pbohorquez,
For information, check the CPU performance on spec.org (http://www.spec.org/cpu2006/results/cfp2006.html) For example : Sun Fire X4140 (AMD Opteron 2435 2.6GHz) : 17.8 (base) PowerEdge R510 (Intel Xeon E5520, 2.26 GHz) : 29.5 (base) (+60%) I don't know if it's possible de "customise" OpenFoam with flag compilation at the first installation, to increase performance. There is any Guru in this room ? (sorry for my french translation) Best regards / Cordialement |
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October 30, 2009, 15:42 |
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#4 | |
Member
Patricio Bohorquez
Join Date: Mar 2009
Location: Jaén, Spain
Posts: 95
Rep Power: 17 |
Quote:
Thanks for the info Rui. Indeed, I did try the optimisation flags recommended by AMD, but I did not find any improvement. It seems that Intel is ... |
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