[petsc-dev] Jacobian lag persist with ROSW method

[Mani Chandra]

Hi,

The option -snes_lag_jacobian_persists TRUE doesn't seem to prevent the
jacobian calculation at the beginning of each time step in the ROSW method
in the TS module. I'm hoping to avoid an expensive jacobian assembly at the
beginning of each time step and whenever a time step is rejected in the
ROSW method. The option however works with the THETA method.

I'm using the dev version.

Cheers,
Mani
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