On Aug 5, 2011, at 10:43 AM, Ataollah Mesgarnejad wrote: > Dear all, > > I use KSPSetInitialGuessNonzero for my KSP solver and it works perfectly. But > when I restart my computations (I read petsc binaries and set up my fields) > the first KSP solve takes forever. I guess my question is: is there a way to > set the initial guess for KSP back to where it was before termination (i.e. > write the KSP out) or set it to be a predefined vector? > > Thanks, > Ata
There isn't a way automatically with the KSP. But why not save the last solution to the binary file and read it in at restart and put it into x before your first new KSPSolve? Barry
