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-   -   low utilization of RAM (http://www.cfd-online.com/Forums/cfx/24677-low-utilization-ram.html)

Toralf October 17, 2007 04:01

low utilization of RAM
 
Hello,

FYI: CFX11, OS WXP64, CPU XEON DUAL CORE 3Ghz, Nodes appr. 1.4 million

I am happy about my 16 GB RAM, but the use in progress at Memory allocation factor 1 is only at 25 % (info from Everest, Lavalys Inc.). The virtual memory is similar. If I put the Memory alloc. factor on 10 (serial in Solver Manager) the RAM-use is only at 90 %. Of course I prefer the full use of my RAM. Please, can give somebody any advice? Gives it more possibilities to adjust the memory use? How can I predict the alloc. factor before? The virtual memory raises with the RAM-use. But I thought, if the RAM is at 100% and more then the virtual memory will grow. Thank you very much, Toralf

Glenn Horrocks October 17, 2007 18:34

Re: low utilization of RAM
 
Hi,

Why allocate more memory than the simulation needs? It is rare to need to adjust the memory settings in CFX. You will not get a significant performance increase. Just leave the settings at the defaults.

Glenn Horrocks


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