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System requirements to run COMSOL simulations involving millions of degrees of freedom

Posted 20 oct. 2011, 07:47 UTC−4 2 Replies

Triantafyllos (Fyllos) Stylianopoulos
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Hello,

I want to run transient comsol simulations that involve ~10 million degrees of freedom on a workstation equipped with a new Intel Xeon processor (3.06GHz speed). From your experience, how much RAM is required to run effectively such a simulation and is this feasible as far as the solution time is concern? If it is not feasible what are the system requirements that will allow me to run these simulations?

I use both COMSOL 4.2 and 3.5a. Is the new version faster in solving large simulations than the older one?

thank you very much,
Fyllos
2 Replies Last Post 20 oct. 2011, 11:28 UTC−4
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago 20 oct. 2011, 11:04 UTC−4
Hi

I run about 2-3 MDof on 48Gb, depends quite a bit on your model and solver, so you would need quite some RAM ;)
In anycase use the latest version, in my opinion

--
Good luck
Ivar
Hi I run about 2-3 MDof on 48Gb, depends quite a bit on your model and solver, so you would need quite some RAM ;) In anycase use the latest version, in my opinion -- Good luck Ivar
Sirisha Govindaraju
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Posted: 1 decade ago 20 oct. 2011, 11:28 UTC−4
See this www.comsol.com/community/forums/general/thread/863/
It says that to run a problem with a million DOF, you need about 20GB for a direct solver.

Sirisha
See this http://www.comsol.com/community/forums/general/thread/863/ It says that to run a problem with a million DOF, you need about 20GB for a direct solver. Sirisha

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