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March 28, 2016, 11:25 |
serial or partition in CFX
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#1 |
Senior Member
yaseen
Join Date: Oct 2015
Location: Hawler
Posts: 174
Rep Power: 11 |
Hello everyone
Iam modeling free surface, my computer (corei7, 16 Gb ram) I don't know it is better to use serial or local parallel, if parallel the number of partitions equal to 8? thanks |
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March 28, 2016, 14:50 |
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#2 |
Senior Member
Join Date: Jun 2009
Posts: 1,880
Rep Power: 33 |
What is your goal ? what is your plan to achieve it ?
First, have you already done the free surface tutorial ? Have you realized your specific model, and obtained meaningful solutions for the initial runs ? If you already have a working setup, you can do parallel runs just to reduce the wait time to analyze your results. Otherwise, you will be getting faster to a useless set of results if any at all. On what number of cores to use: first find out how many "true/real cores" your machines has, not the ones when hyper-threading is active. Then, you can use any number of them; however, using all of the cores available may not be cost-efficient, and you are better off using 80% of them or less. Hope the above helps, |
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March 28, 2016, 15:51 |
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#3 |
Senior Member
yaseen
Join Date: Oct 2015
Location: Hawler
Posts: 174
Rep Power: 11 |
thanks for reply
yes of course, I did a lot of model in free surface, but using serial, I know using parallel can reduce computational time. actually I dont have licence for disturbed parallel, only I can use local parallel. before i used (number of partition = number of Ram) It means 16. it works but slow. so I must put NO. of processor in partition ? thanks |
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March 28, 2016, 17:57 |
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#4 |
Senior Member
Join Date: Jun 2009
Posts: 1,880
Rep Power: 33 |
Maximum No. of Partitions = Number of Cores.
In practice, for better performance on PC based machines you should use less than the number of cores. |
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