[petsc-users] Checkpointing / restart

[Jed Brown]

Lisandro Dalcin <dalcinl at gmail.com> writes:
> We can experiment in this code with some extra APIs to let users
> specify the initial derivative. What about TSAlphaSetSolution(ts,U,V)
> and TSAlphaGetSolution(ts,&U,&V), where U and V are the initial
> solution and derivative vectors?

For multistep methods, it makes sense to support specification of higher
moments.  This is necessary, for example, after regridding when using an
adaptive spatial discretization.
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