[ale] Hyperthreading

Jeff Layton jeffrey.b.layton at lmco.com
Wed Apr 14 14:52:01 EDT 2004


Right now - 2.4. I haven't gotten around to testing 2.6 yet
(maybe in the near future if I can get my butt in gear).

>Jeff:
>Are you using 2.4 kernels to test this with or 2.6 stuff?
>
>On Wed, Apr 14, 2004 at 01:21:33PM -0400, Jeff Layton wrote:
>  
>
>>It generally hurts our CFD codes. It also hurts all but one of the
>>NPB codes (which are CFD). We turn it off for now.
>>
>>Maybe in the future when a real multi-core chip comes out
>>we can revisit it. Multi-core chips also give rise to the possibility
>>of doing multi-level parallelism usch as MPI+OpenMP.
>>
>>Jeff
>>
>>-- 
>>Dr. Jeff Layton
>>Aerodynamics and CFD
>>Lockheed-Martin Aeronautical Company - Marietta
>>
>>    
>>
>
>  
>


-- 
Dr. Jeff Layton
Aerodynamics and CFD
Lockheed-Martin Aeronautical Company - Marietta




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