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Computer capacity to run an important mesh on OpenFOAM |
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December 19, 2013, 01:02 |
Computer capacity to run an important mesh on OpenFOAM
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#1 |
Member
Mehdi GHOZALI
Join Date: May 2013
Location: Dubai, UAE
Posts: 65
Rep Power: 13 |
Dear everyone,
I start working in a company and they don't use OpenFOAM but they want to run some test cases to see if it worths using it. So, I have installed it on my computer (Ubuntu virtualbox) just to run some tests and show to the boss it's capacity. Now they want to install it on the their server, so they need to know what kind of CPU/GPU, RAM they need to run a "big" OpenFOAM test (by big I mean with more then 5,000,000 elements). Thank you and hope someone can help as quick as you can. Dadou |
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December 19, 2013, 01:50 |
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#2 |
Senior Member
Join Date: Jun 2011
Posts: 163
Rep Power: 15 |
you can see the tutorial cases of openfoam and you will find that OF can solve many CFD problems
for 5 millions elements I propose the following RAM 16 Giga bayt cpu core i7 intel 3.6 GHz Graphics 4 Giga bytes |
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December 19, 2013, 03:24 |
Workstation/Cluster
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#3 | |
Member
Dr. B T KANNAN
Join Date: Jul 2011
Location: CHENNAI (MADRAS), INDIA
Posts: 55
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Quote:
From my experience Ram you need is around a Gb per million cell for simulation alone. Processors (100,000 cells per processor - for parallel processing) ----------------------------------------------------------------------------------------------------------------- My suggestion would be a workstation of the configuration said above - (slow) or A cluster with 60~70 cores (relatively fast) But these configurations also depend on the problem you are simulating... -- KANNAN |
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January 13, 2014, 02:31 |
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#4 | |
Member
Mehdi GHOZALI
Join Date: May 2013
Location: Dubai, UAE
Posts: 65
Rep Power: 13 |
Quote:
what model of XEON? 100k cells per processor, per core or per thread? Thanks |
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January 13, 2014, 02:50 |
Answer
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#5 |
Member
Dr. B T KANNAN
Join Date: Jul 2011
Location: CHENNAI (MADRAS), INDIA
Posts: 55
Rep Power: 15 |
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January 13, 2014, 05:31 |
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#6 |
Member
Mehdi GHOZALI
Join Date: May 2013
Location: Dubai, UAE
Posts: 65
Rep Power: 13 |
Thank you
Dadou |
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January 13, 2014, 11:01 |
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#7 | |
Senior Member
Join Date: Dec 2010
Posts: 135
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Quote:
100k, this is just a rule of thumb. In my cases OF scales up to 10k cells each cpu. So after investing in your workstation make a scalability study....... |
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January 13, 2014, 15:01 |
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#8 |
Member
Mehdi GHOZALI
Join Date: May 2013
Location: Dubai, UAE
Posts: 65
Rep Power: 13 |
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January 14, 2014, 01:35 |
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#9 |
Senior Member
Onno
Join Date: Jan 2012
Location: Germany
Posts: 120
Rep Power: 15 |
Since it's highly case dependent, the test case should represent what you are trying to do later on.
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January 14, 2014, 03:30 |
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#10 |
Member
Mehdi GHOZALI
Join Date: May 2013
Location: Dubai, UAE
Posts: 65
Rep Power: 13 |
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