LU factorization for sparse matrices

Sara Costa Romero on Thu, 19 Apr 2012 12:01:55 +0200

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LU factorization for sparse matrices

To: pari-users@pari.math.u-bordeaux1.fr
Subject: LU factorization for sparse matrices
From: Sara Costa Romero <costas@aia.es>
Date: Thu, 19 Apr 2012 12:01:48 +0200
Delivery-date: Thu, 19 Apr 2012 12:02:00 +0200

I have some huge non-symmetric sparse systems I have to solve. Is there any LU factorization of sparse matrices or I have to consider them as dense? If there is not, can anyone give me an idea to minimize their fill factor preserving stability? It seems that if I preordering and stability do not match, one distrois the goods of the other.

Thanks

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  - From: Bill Allombert <Bill.Allombert@math.u-bordeaux1.fr>

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