John Mousel <[email protected]> writes: > I'm solving a Poisson equation with BiCGStab/GAMG. I'm looking at KSPView > and I see that the problem is not reducing the number of processors on the > coarser grids. My coarse problem is 723x723, and it looks like it's still > being solved on 192 processes. This doesn't seem right, and I'm believe > this used to trigger processor reduction.
It still uses the big communicator, but all but rank 0 should be empty on the coarsest grid.
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