[Trilinos-Users] Inverse of a sparse matrix?

[Bartlett, Roscoe A]

Martin,

I think the inverse of most sparse matrices in dense and is therefore not directly supported in Trilinos.  However, no-one is stopping you from computing such a thing using a linear solver (just pass in columns of identity as the RHS and you will get the inverse column-by-column).

- Ross



> -----Original Message-----
> From: trilinos-users-bounces at software.sandia.gov [mailto:trilinos-
> users-bounces at software.sandia.gov] On Behalf Of Martin Vymazal
> Sent: Monday, August 30, 2010 4:30 PM
> To: trilinos-users at software.sandia.gov
> Subject: [Trilinos-Users] Inverse of a sparse matrix?
> 
> Hello,
> 
>   I'm sorry if this question was already answered somewhere, but I
> searched and didn't find the answer. I'd like to ask what is the best
> way to compute an inverse of a Epetra__FECrsMatrix. Thank you.
> 
>   Martin Vymazal
> 
> 
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