Hello,
I believe you do not need to change anything on CommMonitor.py. Did you follow 
the instructions here and attach a probe to the monitor you are using: 
http://gem5.org/General_Memory_System#Traffic_analysis_and_memory_trace_capture 
?

Cheers
Serhat Gesoglu

________________________________
From: gem5-users [[email protected]] on behalf of Saivarun R 
[[email protected]]
Sent: 29 November 2017 08:53
To: [email protected]
Subject: [gem5-users] CommMonitor.cc not generating trace file

Hi,

I added CommMonitor between cpu and L1Dcache. I'm using the current gem5 from 
the github and updated to the branch hpca.

The CommMonitor is seen in the config.dot.pdf file generated. PFA. But the 
trace file is not getting generated in m5out directory. Actually, the 
CommMonitor.py does not even have the argument trace_file, the first time I ran 
the simulation. I then added the argument in that file. There is a lot of 
difference between the comm_monitor.cc file that is there with me and that in 
the the last stable version.

I used detailedcpu with l1i_cache and l1d_cache. Kindly, help me in generating 
the trace file.

Thank you in advance
Varun
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