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Re: code for ILU factorization preconditioner


From: David Bateman
Subject: Re: code for ILU factorization preconditioner
Date: Sun, 23 Dec 2007 14:06:10 +0100
User-agent: Thunderbird 1.5.0.7 (X11/20060921)

Kamaraju S Kusumanchi wrote:
> David Bateman wrote:
>> Octave doesn't have the ilu function yet. It does have a very limited
>> luinc function.
>>
> 
> Looks like it is very limited. Even ILU(0) is not implemented.
> 
> [M N O] = luinc(sparse(unknown), '0');
> error: luinc: zero-level factorization not implemented
> 
> raju

Yup, it only does a drop tolerance for the partial LU factorization, as
that was easy to implement as UMFPACK supports a drop tolerance. I have
no need of an iterative solver and so never implemented this stuff. I'd
be happy to see someone else do it though :-)

D.



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