[Beowulf] Nas parallel benchmarks issue

Clements, Brent M (SAIC) brent.clements at bp.com
Wed Feb 15 21:27:16 EST 2006


My bad, I thought openmp had been included in gcc 3.x and up. That would explain why it ain't working. I did have a version compiled with the intel compilers and it was working fine. I just could not figure out why it didn't work with gcc 3.x and up.
 
Brent
 
 
 
 

________________________________

From: beowulf-bounces at beowulf.org on behalf of Clements, Brent M (SAIC)
Sent: Tue 2/14/2006 11:43 AM
To: beowulf at beowulf.org
Subject: [Beowulf] Nas parallel benchmarks issue



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?

Thanks,
BC

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