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Max. RAM in Flow3D

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Old   December 2, 2008, 13:08
Default Max. RAM in Flow3D
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Lars
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Hi. I have a workstation with 8Gb RAM. But apparently Flow3D can only use 1 Gb RAM. If the size of the mesh needs more than 1Gb of RAM for the calculation the machine starts to swap between the harddisk and CPU and the performance gets close to 0%. Does anyone have the same problem or is it some settings in my software? Thanks.
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Old   December 3, 2008, 01:26
Default Re: Max. RAM in Flow3D
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CK
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Lars i believe this is limited by 32bit OS system. you may need to upgrade to 64bit OS system to fully utlized your 8Gb RAM. hope this help.

Rgds CK
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Old   December 3, 2008, 04:19
Default Re: Max. RAM in Flow3D
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Lars
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Hi CK. Thanks for your reply. I actually do have 64bit WIN XP. My worry was that my Flow3D version (9.3.1) had a bug that prevented the software from using more than 1Gb. I would therefore like to hear if anyone elso had experienced the same problem with this version. My older version, ver. 9.0 did not have this problem.

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Old   December 3, 2008, 10:39
Default Re: Max. RAM in Flow3D
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michael barkhudarov
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Lars,

FLOW-3D does not have a limitation on the memory use other than what the system can handle. It certainly cannot control swapping, this is done by the OS. I am not sure how it is done on Windows. Isn't there a paging file? Can you check its size under Control Panel>System>Peformance>Advanced? It should be at least as big the the total RAM on the machine.

Michael
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Old   January 8, 2009, 10:56
Default Re: Max. RAM in Flow3D
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Julien Pralong
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Hye!

I also work on WINXP 64 OS with 8GO RAM, and have the same limitation at 1 GO used by F3D. I have made the manipulation Michael advices, but without success...

Still searching...

Julien

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