If I first define a DM, and obtain the solution vector on this DM (through non multigrid method). However, given that this DM is so fine, I may only need to save/view the solution on a coarsen grid. Is there some functions available in petsc for this instead of writing my own vec scatter?
Thank you. Xiangdong On Mon, Mar 3, 2014 at 9:58 PM, Jed Brown <[email protected]> wrote: > Xiangdong <[email protected]> writes: > > Could you please expand it a little more on using DMCoarsenHookAdd to > > restrict a fine vector on a coarse grid? The only example I can find is > > ex48 in snes. It is not clear how the coarsen vector are generated from > > that example. > > Look at the use in src/ts/impls/implicit/theta/theta.c >
