I'm building a custom performance profiler tool and I want to add the following feature:
measure the performance of a graph through different Houdini versions installed and record the timings.

For doing that I need to:

1. know all the houdini versions installed in the machine and their path.
   
2. a way to tell the workitem to use a specific houdini version.
   

Do you have any advice for this?


Regarding 1), I understand that I can do it by looking at the `Side Effects Software/` directory, but maybe there's a built-in way in houdini.