6 Mar
2012
6 Mar
'12
9:47 a.m.
On Tue, Mar 6, 2012 at 09:38, Matthew Knepley <[email protected]> wrote:
ADI is from the last century. Use PETSc's Geometric Multigrid. If you look at SNES ex50 and the tutorial runs for it, you can see how this works.
ex5.c is a better example if you are solving a scalar problem. Sanjay, ADI has poor memory memory characteristics, does not scale well in parallel, and is very restrictive. As Matt says, multigrid is a better and more general approach, it will converge faster and scale better.