[petsc-users] Question about LogSummary

[Blaise A Bourdin]

Hi,

I am trying to do some scaling tests but can't figure out something about LogSummary: When no custom stages / events are defined, how come "Main Stage" is not 100% of the time? What is not counted? Here is a example of what I get:

Summary of Stages:   ----- Time ------  ----- Flops -----  --- Messages ---  -- Message Lengths --  -- Reductions --
                        Avg     %Total     Avg     %Total   counts   %Total     Avg         %Total   counts   %Total 
 0:      Main Stage: 2.5763e+03  65.1%  3.2380e+15 100.0%  1.230e+11 100.0%  8.493e+02      100.0%  7.013e+06  97.0% 

Where is the missing 35% of the time? I call PetscLogBegin right after PetscInitialize.

Blaise


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Department of Mathematics and Center for Computation & Technology
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