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3 Replies
Last post: November 22, 2011 12:49pm UTC
November 22, 2011 11:46am UTC
RAM usage
Hi,
I'm trying to solve an antenna model using the RF module. The computer is running Windows 7 and is a dual core 3GHz with 8GB of RAM. When solving and the model the memory shows 3GB/3.22GB only.
Could anybody give me some advice of how to use up to 8GB?
Thanks in advance.
Regards,
David
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November 22, 2011 12:14pm UTC in response to David Smith
Re: RAM usage
Hi
first you need win 7 -64 bit (but that I assume you have, with already > 3Gb of RAM)
The it depends on the model and the mesh size. Possibly also on the solver settings, you might get better use of the RAM if you use a direct solver (provided this is not already the case)
I any case, not all COMSOL operations are - can be made - parallelised
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Good luck
Ivar
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November 22, 2011 12:47pm UTC in response to Ivar Kjelberg
Re: RAM usage
Hi Ivar,
Thanks for your response. Yes, the PC is running Windows 7 64bit.
I will try the direct solver setting and see if the model solves.
Previously I was getting the message "Ill-conditioned preconditioner. Increase factor in error estimate." I have modified the mesh and reduced the relative tolerance.
Regards,
David
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November 22, 2011 12:49pm UTC in response to David Smith
Re: RAM usage
Hi
All models might not run on direct solvers, some require iterative solvers, with or without segregation, it all depends ...
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Good luck
Ivar
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