[petsc-dev] People spent tim doing this

Zhang, Hong hongzhang at anl.gov
Fri Oct 11 11:27:06 CDT 2019

It is hard to understand where the speedup comes. What is the difference between "manner 1" and "manner 2”?

Btw, we don’t provide “ELL” format in PETSc. We provide “SELL”, which should be more SIMD-friendly than the column-ELL proposed in the paper.


On Oct 10, 2019, at 8:16 PM, Matthew Knepley via petsc-dev <petsc-dev at mcs.anl.gov<mailto:petsc-dev at mcs.anl.gov>> wrote:



What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.
-- Norbert Wiener


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