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<p>Thanks, Ian. Yes, we were thinking of the detailed timers and we
were thinking about making a modification to provide live data.
We'll make the project soon.<br>
</p>
<p>--Steve<br>
</p>
<br>
<div class="moz-cite-prefix">On 05/23/2017 02:17 AM, Ian Hinder
wrote:<br>
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<div>On 22 May 2017, at 21:35, Steven R. Brandt <<a
moz-do-not-send="true" href="mailto:sbrandt@cct.lsu.edu"><a class="moz-txt-link-abbreviated" href="mailto:sbrandt@cct.lsu.edu">sbrandt@cct.lsu.edu</a></a>>
wrote:</div>
<br class="Apple-interchange-newline">
<blockquote type="cite">Is there a way to graphically display
cactus timer data? We're thinking <br>
about having an REU student develop such a tool if it doesn't
exist. Thanks.<br>
</blockquote>
<div><br>
</div>
<div>Hi Steve,</div>
<div><br>
</div>
<div>Not that I know of. What sort of graphical display are you
thinking of? Anyone can plot the Carpet timing variables
(physical_time_per_hour as a function of time) etc in whatever
they usually use to make plots of Cactus data.</div>
<div><br>
</div>
<div>If you are thinking of the detailed timers used to profile
the different parts of the code, then it would be good to have
something to make a quick plot of these. They could take the
timertree.*.xml files and produce a hierarchical display of
the timers. This could be a tree or a pie chart. I have done
this before using Mathematica. Some of the things I did were:</div>
<div><br>
</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>–
Selecting a threshold so that timers which contribute a small
amount are omitted, otherwise there are too many timers to
display</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>–
Creating "groups" (via string patterns) so that you can
logically group things together (e.g. you might want to merge
all the different McLachlan RHS timers into a single one)
depending on the analysis you are doing</div>
<div><br>
</div>
<div>It would be good to have a tool, maybe based on Python and
Matplotlib, to generate such plots quickly and simply. One
issue is that the timer XML files are only written at the end
of the simulation, and their content is not reduced among
processors. It is usually quite important to consider all the
processors, not just the first one, so we should think about
how this should be done. Depending on what you want to
achieve, it could also be useful to output the XML files
regularly, though then you have to think about whether it's
important to keep the historical data, or just replace with
the current totals. It also leads to a large number of output
files since we have one per process. This is why I don't
enable this timer output in my own simulations, except when
explicitly benchmarking/profiling. </div>
<div><br>
</div>
<div>Perhaps you could create a page under "projects" on the ET
wiki and we can make notes and suggestions there?</div>
</div>
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<div>-- </div>
<div>Ian Hinder</div>
<div><a moz-do-not-send="true"
href="http://members.aei.mpg.de/ianhin">http://members.aei.mpg.de/ianhin</a></div>
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