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December 20, 2011, 01:03 |
Slow case loading on parallel fluent
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#1 |
New Member
Join Date: Dec 2011
Posts: 3
Rep Power: 14 |
Hi,
I am new to fluent. However, I just need to do some simple simulations so I am using a consumer PC. Recently I am running Fluent on a single PC i7-2600 with 12GB(4+4+2+2) memory. I plan to use the 4 cores (8 threads), the solver works as expected, but the case loading and writing are quite slow. I am not sure if these is any hardware limits for it. The case loading/writing works very smooth and fast in the serial mode. It has totally 55180 nodes in the case file and each computing node has about 5800 cells. I appreciate if someone can point me out if there is any mistake. Thanks, |
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December 20, 2011, 14:41 |
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#2 | |
Senior Member
Vieri Abolaffio
Join Date: Jul 2010
Location: Always on the move.
Posts: 308
Rep Power: 17 |
Quote:
First of all your pc has only 4 cores, you see 8 cores because of the hyperthreading. As cfd codes are effectice in filling up the computational power, it would be better to turn ht off and use just 4 cores. The slow loading time could be caused by a slow hd or network, if you are accessing ddata somewhere else. |
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December 20, 2011, 15:02 |
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#3 | |
New Member
Join Date: Dec 2011
Posts: 3
Rep Power: 14 |
Thank you sail. I turned off the hyperthreading and the case loading is much faster than before. But it is still not as smooth as loading in serial mode. I am reading case file from hard disk, which is 7200rpm. Will this be a problem? However, my network is only 100mb Ethernet. Will it access network frequently during the case loading. I think it shall use shared memory.
Quote:
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December 21, 2011, 16:19 |
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#4 | |
Senior Member
duri
Join Date: May 2010
Posts: 245
Rep Power: 17 |
Quote:
Never use threading it always limits your processing power. Its good only for multi-threading applications like games |
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