[petsc-users] Checkpointing / restart

[Lisandro Dalcin]

On 9 December 2014 at 18:24, Carles Bona <carlesbona at gmail.com> wrote:
> TS type is alpha
>

I'm working on a reimplementation of TSALPHA in PetIGA,
https://bitbucket.org/dalcinl/petiga/src/default/src/tsalpha1.c .
Eventually, I'll update the code in PETSc with this new
implementation. This new implementation features some attempts to
implement time-step adaptivity. Additionally, it implements a poor
man's attempt to estimate a initial derivative without requiring users
to setup and solve a problem involving the mass matrix.

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?

-- 
Lisandro Dalcin
============
Research Scientist
Computer, Electrical and Mathematical Sciences & Engineering (CEMSE)
Numerical Porous Media Center (NumPor)
King Abdullah University of Science and Technology (KAUST)
http://numpor.kaust.edu.sa/

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