[Beowulf] Nas parallel benchmarks issue

Craig Tierney ctierney at hypermall.net
Wed Feb 15 20:23:19 EST 2006


Clements, Brent M (SAIC) wrote:
> Hello,
>  
> Would it be possible to find out from you guys exactly bench mark I should build in order to test a 16 way SMP system? And secondly, how should I then run that benchmark?
>  
>  
> I've done the following in NPB3.2-OMP/
>  
> make bt CLASS=A
>  
> and then run(per the README-3.1 instructions)
>  
> setenv OMP_SCHEDULE "static"
> setenv OMP_NUM_THREADS 16
> bin/BT.A > BT.A_out.16
>
>  
> but the results of the test show that only 1 thread has been utilized. 
>  
> I am using gcc 3.4.5 and NO mpi library.
>  
> Am I doing it correctly and/or choosing the correct version of NPB?
>  
>   
Has OpenMP support been merged into GCC yet?  I didn't think so. 
Download Intel, PGI, or Pathscale and try one of those.

Craig


> Thanks,
> BC
>
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