> On 29 Jun 2016, at 19:47, Khai Pham <khaip...@utexas.edu> wrote: > > Thanks for your response. Is DMMoad is other special kind of data structure > in Petsc? I'd like to use the petsc FAS for the finite element code in our > group and all the data structure for mesh topology is all set. Thus I try to > avoid all petsc data structure. As far as I know the FAS will construct the > coarse solution based on DM for structured grid and DMPlex for unstructured > grid as in ex12. Would it be possible to use FAS without using petsc > DM/DMPlex by adding extra code? How much effort would you estimate? Thanks !
You can use a DMShell and just implement the needed grid transfer operations using your own data structures and then use the DMShellSetXXX interfaces to hook them up. Lawrence
