Topic: petsc solver error: matrix is missing diagonal entry
Hi
When I was using weakly periodic Boundary conditions to be applied on SVE solved with the PETSC linear solver, I came across this problem (matrix is missing diagonal entry). It seems I did not set zero diagonal entries for each row when ILU preconditioning was used? I searched online but I didnot yet find answers for this
How should I solve this issue? Can you give me any hints? Many thanks
Regards