Time Profiling

Table of contents

• How to Configure?
• Visualizing the Profile – Chrome Tracing

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How to Configure?

Compile libyt with -DSUPPORT_TIMER option. (See How to Install)

Visualizing the Profile – Chrome Tracing

1. Since each process dumps its profile libytTimeProfile_MPI*.json separately, we run the following to concatenate all of them:

   cat `ls libytTimeProfile_MPI*` >> TimeProfile.json
   

2. Add ]} at the end of TimeProfile.json.

   This is optional, and we only need to add ]} if Perfetto doesn’t recognize the file.

3. Open Google Chrome and enter chrome://tracing, or go Perfetto.

4. Load the time profile TimeProfile.json.