On Tue, Jan 25, 2022 at 11:56 AM Jed Brown <j...@jedbrown.org> wrote:
> Barry Smith <bsm...@petsc.dev> writes: > > > Thanks Mark, far more interesting. I've improved the formatting to > make it easier to read (and fixed width font for email reading) > > > > * Can you do same run with say 10 iterations of Jacobi PC? > > > > * PCApply performance (looks like GAMG) is terrible! Problems too > small? > > This is -pc_type jacobi. > > > * VecScatter time is completely dominated by SFPack! Junchao what's up > with that? Lots of little kernels in the PCApply? PCJACOBI run will help > clarify where that is coming from. > > It's all in MatMult. > > I'd like to see a run that doesn't wait for the GPU. > > Not sure what you mean. Can I do that?
