Re: [deal.II] Direct solver matrix.free

[Daniel Arndt]

Joss,

The MatrixFree framework relies on the operator to be only defined by its
action. Accessing individual elements (as direct solvers typically require)
falls out of this concept. That is to say that the MatrixFree framework
only works well with an iterative solver.

Best,
Daniel

Am Do., 21. Okt. 2021 um 13:45 Uhr schrieb Joss G. :

> Hi all,
>
> I was using the solver PETScWrappers::SparseDirectMUMPS for a sparse
> matrix approach. Now I am changing the code to a matrix-free implementation
> and I am not using PETSc anymore, instead, I use
> LinearAlegebra::distributed::Vector. I am not able to find an
> equivalent direct solver that I can use. Could anyone please point me what
> solver can i use?
>
> Thank you very much.
>
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> .
>

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[deal.II] Direct solver matrix.free

[Joss G.]

Hi all, 

I was using the solver PETScWrappers::SparseDirectMUMPS for a sparse matrix 
approach. Now I am changing the code to a matrix-free implementation and I 
am not using PETSc anymore, instead, I use 
LinearAlegebra::distributed::Vector. I am not able to find an 
equivalent direct solver that I can use. Could anyone please point me what 
solver can i use?

Thank you very much.

-- 
The deal.II project is located at http://www.dealii.org/
For mailing list/forum options, see 
https://groups.google.com/d/forum/dealii?hl=en
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