CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > OpenFOAM Running, Solving & CFD

OPTERON SHANGHAI / ESTAMBUL versus INTEL NEHALEM

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Display Modes
Old   October 29, 2009, 08:48
Default OPTERON SHANGHAI / ISTANBUL versus INTEL NEHALEM
  #1
Member
 
Patricio Bohorquez
Join Date: Mar 2009
Location: Jaén, Spain
Posts: 94
Rep Power: 8
pbohorquez is on a distinguished road
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 09:23.
pbohorquez is offline   Reply With Quote

Old   October 30, 2009, 00:56
Default
  #2
Senior Member
 
lakeat's Avatar
 
Daniel WEI (老魏)
Join Date: Mar 2009
Location: South Bend, IN, USA
Posts: 688
Blog Entries: 9
Rep Power: 12
lakeat is on a distinguished road
Send a message via Skype™ to lakeat
What? Made in Shanghai, China?
__________________
~
Daniel WEI
-------------
NatHaz Modeling Laboratory
Department of Civil & Environmental Engineering & Earth Sciences
University of Notre Dame, USA
Email || My Personal CFD Blog
lakeat is offline   Reply With Quote

Old   October 30, 2009, 11:22
Lightbulb
  #3
New Member
 
Rui Da Silva Lourenco
Join Date: Oct 2009
Location: France
Posts: 2
Rep Power: 0
siffli is on a distinguished road
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
siffli is offline   Reply With Quote

Old   October 30, 2009, 16:42
Default
  #4
Member
 
Patricio Bohorquez
Join Date: Mar 2009
Location: Jaén, Spain
Posts: 94
Rep Power: 8
pbohorquez is on a distinguished road
Quote:
Originally Posted by siffli View Post
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

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 ...
pbohorquez is offline   Reply With Quote

Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
CFX11 + Fortran compiler ? Mohan CFX 20 March 30, 2011 18:56
Intel Nehalem (i7core) benchmarks? andy2O Hardware 23 May 3, 2009 17:53
AMD Opteron 280 vs X2 6400+ vs Intel E6750? phsieh2005 Main CFD Forum 2 December 5, 2007 08:18
AMD Opteron vs Intel Xeon K. Jagus FLUENT 8 May 20, 2005 03:49


All times are GMT -4. The time now is 18:04.