General Question about Linear Solvers

[Matthew Knepley]

In general, iterative information cannot be reused, or it is of little use.
Until you get truly large, I would use sparse direct packages like
MUMPS or SuperLU_dist through PETSc. They are simple (hopefully)
with configure.

  Matt

On 3/6/07, Manav Bhatia <manav at u.washington.edu> wrote:
> Hi
>
>     I have an application where a linear system of equations has to be
> solved for many right hand sides. I am curious to know about how the
> different solvers compare with each other for such a case?
> `   So far, I have only used the LU decompositionm, where, once
> decomposed,
> the factorization can be use each time. I have been solving small systems
> so far, hence, cost of factorization has not been my concern. However, I
> will be moving towards much larger problems, requiring parallel
> processing.
>     I would greatly appreciate if someone could comment on this.
>
> Thanks,
> Manav Bhatia
> PhD Candidate
> Department of Aeronautics and Astronautics
> Guggenheim Building
> University of Washington
> Seattle, WA 98195-2400
>
> Ph (O) (206) 685 8063
> e-mail: manav at u.washington.edu
>
>


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