|
[Sponsors] |
August 6, 2013, 10:37 |
Fluent 14.5 parallel performance
|
#1 |
Senior Member
Philipp
Join Date: Jun 2011
Location: Germany
Posts: 1,297
Rep Power: 26 |
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.
__________________
The skeleton ran out of shampoo in the shower. |
|
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
MAXIMUM PERFORMANCE IN FLUENT (using distributed parallel)) | fevi84 | FLUENT | 1 | July 23, 2012 15:05 |
parallel fluent runs being killed at partitioing | Ben Aga | FLUENT | 3 | June 8, 2012 10:40 |
FLUENT parallel performance on 6-core processors | BRG | FLUENT | 2 | May 27, 2010 18:21 |
Fluent Parallel Error | Will Humber | FLUENT | 2 | April 3, 2008 14:15 |
Parallel Fluent on Linux clusters | Chengwang Lei | FLUENT | 3 | November 24, 2004 02:05 |