From: Bin He (binhe_at_hustunique.com)
Date: Sat Nov 08 2014 - 01:24:32 CST
Hi everyone,
I am a fresh man to NAMD.
The Desc of our clusters:
cpu:E5-2670(8cores)
memory:32GB
socket:2
network:IB
GPU:k20m*2
CUDA:6.5
workload:* f1atpase(numsteps2000)*
When I run the multicores-namd version, the cpu usage is about 100% and GPU
usage is about 50%;
*CMD:./namd2 +p16 +devices 0,1 ../workload/f1atpase/f1atpase.namd*
cpu time is about 88s.
When I run the ibverbs-smp-cuda version, the cpu usage is about just 40%us
and 30 % sy. GPU usage is about 50%.
*CMD:/home/gpuusr/binhe/namd/NAMD_2.10b1_Linux-x86_64-ibverbs-smp-CUDA/charmrun
++p 60 ++ppn 15 ++nodelist nodelist ++scalable-start ++verbose
/home/gpuusr/binhe/namd/NAMD_2.10b1_Linux-x86_64-ibverbs-smp-CUDA/namd2
+devices 0,1 /home/gpuusr/binhe/namd/workload/f1atpase/f1atpase.namd*
cpu time is about 37s.
when I try to use setcpuaffinity, the result is worst.
So what is wrong with my operation?
Thanks
------------------------
Best Regards!
Bin He
Member of IT
Unique Studio
This archive was generated by hypermail 2.1.6 : Wed Dec 31 2014 - 23:22:58 CST