[petsc-dev] Mark Adam's performance kernel logging

Matthew Knepley knepley at gmail.com
Fri Nov 30 16:10:03 CST 2012

On Fri, Nov 30, 2012 at 3:45 PM, Barry Smith <bsmith at mcs.anl.gov> wrote:
>    I think we can implement Mark Adam's idea of generating performance information for individual kernels (multiply, dot, daxpy …) by using the XXView() code since that handles the recursive traversal  to the sub objects. So MatView() with the performance viewer format would do a MatMult(),   KSPView() would do a axpy,  KSPView_GMRES() would do an mdot and maxpy etc. … PCMG would call the viewer recursively on the subksps etc etc etc.

Yes, we can use Viewer for top level traversal, and then the low-level
Log API for
extracting the performance info online and processing it.


>    Barry

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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