On Thu, Mar 29, 2012 at 07:58, Dmitry Karpeev <karpeev at mcs.anl.gov> wrote:
> I am not sure how to solve the problem of the relationship between > KSPReset() and PCReset() when the pc is being shared. > How useful are KSPReset() and PCReset() anyway? All but one uses I found > were "trivial" -- called from a PCReset_XXX, where XXX uses a KSP > internally. The only nontrivial use I found was in VIRS, where the KSP and > PC are reset when the active set changes. Would a simple KSPDestroy() do > here instead? Perhaps there are uses of KSPReset()/PCReset() in user code, > though. > The purpose of all the XXReset() routines is to destroy internal data structures so that the size of the matrix can be changed without needing to reconfigure a new solver. For example, an AMR simulation would change the mesh, create new matrices and vectors, but want to reuse a solver _configuration_. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-dev/attachments/20120329/1e32ce9e/attachment.html>
