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Old   May 10, 2001, 02:58
Default memory size
  #1
Hu Wei
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Hello, I want to run a case with about half million grid, does anyone know how many memory shoud i have to support that? Currently I am using TASCflow 2.10 under UNIX system with 512M memory. Thanks in advance.
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Old   May 10, 2001, 03:27
Default Re: memory size
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John C. Chien
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(1). You are pushing to the limit. Use 1Mega RAM for every 1K cells to estimate the RAM required. (2). so,500000 cells will likely require 500Mega RAM.
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Old   May 12, 2001, 19:35
Default Re: memory size
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Dan Williams
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It Depends on what sort of model complexity you are using. For standard hydrodynamics with k and epsilon used to model turbulence you will probably need about 280 (roughly) 4 byte words per node. That works out to 280*4*500,000/1024^2 = 534MB. I guess you need to purchase some more RAM.

Dan.
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Old   May 14, 2001, 00:50
Default Re: memory size
  #4
park
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hi!

when i ran the case with 400,000 grid (I also used k-e) ,TASCflow 2.10 used 500M ram and 600M swap file on SUN workstation

I guess you could run on your system but it take you too much time because swap file will be huge.

I think you should reduce the grid size if you want quick calculation.

If you reduce the number of GGI interfaces and blocks you could reduce the need of memory.
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