[petsc-users] TS matrix free

[Peter Brune]

Please send the entire error output.

- Peter


On Wed, Jan 29, 2014 at 10:09 AM, Konstantinos Kontzialis <
ckontzialis at lycos.com> wrote:

>    Dear all,
>
>   I am using a matrix free method with a user defined preconditioner.
>   I run with the option -snes_mf_operator, but I get the following:
>
>   Must call DMShellSetMatrix() or DMShellSetCreateMatrix()!
>
>   Why is this happening? I use the TS library.
>
>   Kostas
>
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