Fluent 14.5 parallel performance
Dear all,
I just got the 8-core HPC pack for my fluent license. Of course I started some benchmarks and now I am a bit disappointed. I am using a i7-3770 CPU with 16GB RAM and Windows 7, 64bit. First Case: 1mio cells, eulerian multi-phase flow, pseudo-transient coupled solver This is what I get, everything is compared to the single-core solution: 2 cores: speed-up of 1.56 4 cores: speed-up of 1.91 6 cores: speed-up of 2.17 8 cores: speed-up of 1.76 (<- this is ok, since no core was left for windows...) Ok, 2-4cores improves slightly but then it keeps that level. Is this because my processor only has 4 physical cores? Second Case: 1mio cells, single phase, steady state, SIMPLE 2 cores: speed-up of 1.77 6 cores: speed-up of 2.41 Again, no real speedup, except for the 2 core compared to 1 core... Third Case: 3.6mio cells, single phase, SAS-transient, SIMPLE 2 cores: speed-up of 1.73 3 cores: speed-up of 2.18 4 cores: speed-up of 2.49 5 cores: speed-up of 2.11 6 cores: speed-up of 2.30 7 cores: speed-up of 2.45 Speed-up stops at 4 cores... In each case, I am satisfied with the "2 core speed-up". But then, it doesn't improve very much. Are the cases too small, so 2 cores are already "saturated"? Are any additional settings needed to get better performance? I appreciate any help!!! Philipp. |
All times are GMT -4. The time now is 08:05. |