[petsc-dev] Questions around benchmarking and data loading with PETSc

Mark Adams mfadams at lbl.gov
Sun Dec 12 08:50:26 CST 2021

>    It may be different with the optimization turned on. I am surprised
> that it is 40 usually it is lower.
Sure, he was underperforming by 4x so he was using ~10 cores of a P9. Way
below saturation (20-30).
(but he only got 20x speedup, not sure about that, load balance?, the
matrix looks huge so probably not communication, but maybe)
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