[petsc-users] Bug in log_view printing

[Matthew Knepley]

On Sun, Jul 16, 2023 at 11:45 AM Jared Crean <jcrean01 at gmail.com> wrote:

> Hello,
>
>    I stumbled upon a small bug in the printing of the data when running
> Petsc with -log_view.  The entire table is attached, but here is an
> example row:
>

Yes, we prescribe the exact number of spaces for each output, instead of
allowing it to grow,
so if the number exceeds the size, we lose our space. We wanted to keep the
line length fixed.
We do not recommend this form for processing. We usually use either the XML
output for flame
graphs since it does nesting, or the CSV output for processing with Pandas.

  Thanks,

     Matt


>
> ------------------------------------------------------------------------------------------------------------------------
> Event                Count      Time (sec)
> Flop                              --- Global ---  --- Stage ---- Total
>                     Max Ratio  Max     Ratio   Max  Ratio  Mess AvgLen
> Reduct  %T %F %M %L %R  %T %F %M %L %R Mflop/s
>
> ------------------------------------------------------------------------------------------------------------------------
>
> --- Event Stage 0: Main Stage
>
> BuildTwoSided          7 1.0 1.3282e-0271.6 0.00e+00 0.0 6.0e+01 4.0e+00
> 5.0e+00  0  0  0  0  0   0  0  0  0  0     0
>
>
>    Notice how the Time Max and Time Ratio values are missing a space
> separator (the other rows have only two digits for the exponents, I
> think there should be a space after the e-02 and before the 7).
>
>    Configuration details:
>
>      * Petsc 3.17
>
>      * Arm64 architecture (and AWS c7g.xlarge instance, which use the
> new Graviton3 processor)
>
>      * ubuntu 22.04
>
>      * MPICH MPI (version 4.0, I think, whatever apt-get install mpich
> gives)
>
>      * clang-15 compiler
>
>
>    Jared Crean
>
>

-- 
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

https://www.cse.buffalo.edu/~knepley/ <http://www.cse.buffalo.edu/~knepley/>
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