[petsc-users] PetscLogFlop for a sqrt()

Justin Chang jchang27 at uh.edu
Tue Apr 21 00:59:22 CDT 2015

Hi everyone,

I want to manually count the number of flops that take place within my
user-defined functions. Say I have to calculate the following:

y = sqrt(pow(x[0],2)+pow(x[1],2)+pow(x[2],2));

What should the flop counter be for each call?


Justin Chang
PhD Candidate, Civil Engineering - Computational Sciences
University of Houston, Department of Civil and Environmental Engineering
Houston, TX 77004
(512) 963-3262
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