From: Burgess, Don E (deburgess_at_uky.edu)
Date: Tue Jul 12 2011 - 13:56:45 CDT
Why is the optimal number of processes limited to the number of cpu cores, when I run a job on a gpu tesla 2050?
I invoke the job with the command:
/home/deburg0/Downloads/NAMD_2.8_Linux-x86_64-CUDA/charmrun ++local +p8 /home/deburg0/Downloads/NAMD_2.8_Linux-x86_64-CUDA/namd2 +idlepoll +devices 0,1 kcsa_T85A_popcwieq-09.conf > kcsa_T85A_popcwieq-09.log
When I try +pN where N>8, my performance gets worse.
Please refer to the attached log file.
thank you very much for your help.
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