Justin Chang <[email protected]> writes: > I see that there's GAMG and there's Hypre's BoomerAMG (and perhaps others > too?)
ML > What exactly is the difference between these two? Do they have very > different implementations under the hood? Does one have better > scalability over another? Or more importantly, when would I choose one > over the other? BoomerAMG is classical AMG, which is a different coarsening strategy From GAMG and ML which use smoothed aggregation. The math is different and the implementation is different. ML and GAMG have similar math and there exist configurations that are equivalent.
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