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Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.

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UMFPACK in 4.2a

Posted 2012年3月31日 GMT-4 04:54 Studies & Solvers Version 4.2a 2 Replies

Hyomin Lee
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Hi.

When I use COMSOL 3.5, I use UMFPACK for steady state solver.

But I can not find that solver in 4.2a.

In 4.2a, MUMPS, Paradaiso, SPOOLS is that all.

Where is UMFPACK?

and I wonder the difference UMFPACK and other solvers.
2 Replies Last Post 2012年9月25日 GMT-4 09:27
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Hello Hyomin Lee

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Pu
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Posted: 1 decade ago 2012年9月25日 GMT-4 09:14
I have the same question.

I used to use umfpack solver, and it works very well for most cases. Now I switch to new version and have convergence problem with some model, which seems convergent in 3.5a with umfpack solver.

Anyone knows?

Thanks!
I have the same question. I used to use umfpack solver, and it works very well for most cases. Now I switch to new version and have convergence problem with some model, which seems convergent in 3.5a with umfpack solver. Anyone knows? Thanks!
Aimi Abass
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Posted: 1 decade ago 2012年9月25日 GMT-4 09:27
Hello,

My main weapon is Pardiso though. I think even in 3.5a its more recommended thatn UMfpack. If im not mistaken, pardiso should be able to handle hermitian and symmetric matrices better and give faster solution time with less memory than umfpack

Best

Aimi
Hello, My main weapon is Pardiso though. I think even in 3.5a its more recommended thatn UMfpack. If im not mistaken, pardiso should be able to handle hermitian and symmetric matrices better and give faster solution time with less memory than umfpack Best Aimi

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