Ben, Please explain more what you mean by "a red-black block Jacobi smoother". What is your matrix structure? What are the blocks? How do you decide which ones are which color? Why do you wish to use some a smoother.
Barry > On Aug 29, 2017, at 6:19 PM, Ben Yee <[email protected]> wrote: > > Hi, > > For the smoother in PCMG, I want to use a red-black block Jacobi smoother. > Is this available with the existing PETSc options? If so, how do I designate > which blocks are red and which are black? > > If it is not possible, what would be the best way to implement this? Would I > use KSPRICHARDSON+PCSHELL? > > Thanks! > > -- > Ben Yee > > NERS PhD Candidate, University of Michigan > B.S. Mech. & Nuclear Eng., U.C. Berkeley
