All my runs (and many, many examples I see online) have the following warning 
message:
"warn: No dot file generated. Please install pydot to generate the dot file and 
pdf."

However, I know I have pydot installed; see the following:
prompt> pip install pydot
Requirement already satisfied: pydot in 
/home/avose/pyenv396/lib/python3.9/site-packages (1.4.2)
Requirement already satisfied: pyparsing>=2.1.4 in 
/home/avose/pyenv396/lib/python3.9/site-packages (from pydot) (3.1.0)

I even went back and rebuilt the entire Gem5 again from scratch after I made 
sure pydot was installed. I made sure I built Gem5 using the same environment 
(/home/avose/pyenv396) in which I installed pydot, and I still see this 
warning, and I don't get any dot output.

Does anyone else have a similar problem or any advice on how to fix this?

Thanks much,
~Aaron Vose

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