Dear Sir/Madam, <br> Recently, I studied the /src/ksp/ksp/example/tutorial/ex29.c of solving a 2D Poisson equation. It employs the Multigrid Method on a uniform coordinate. I wonder if there is a way to solve the Poisson equation with a nested grid in PETSc. Any suggestions on any example or thoughts is greatly appreciated. ^_^<br>
<br>best,<br>Alan <br>