[gem5-users] Re: Issue: Checkpoint in FS mode

[Sindhuja Gopalakrishnan Elango via gem5-users]

Hi Pedro,
Thanks for taking the time to reply. 
You're right. The implementation was missing in my own python script. After 
including that, I am able to generate the checkpoint.

Thanks & Regards
Sindhuja

-----Original Message-----
From: Pedro Becker via gem5-users <gem5-users@gem5.org> 
Sent: Thursday, September 2, 2021 3:57 AM
To: gem5-users@gem5.org
Cc: Pedro Becker <pe...@ac.upc.edu>
Subject: [gem5-users] Re: Issue: Checkpoint in FS mode

Hi Sindhuja, 

Are you using your own python script to configure the simulation? 

If I'm not mistaken calling the /sbin/m5 checkpoint exits the m5.simulate() 
(from the script), returning the exit_event (a string "checkpoint"). 
Then, your python script should capture that exit_event and create the 
checkpoint. This is done in the default scripts (e.g., fs.py/Simulation.py) 
with something like this:

exit_event = m5.simulate()
exit_cause = exit_event.getCause()
while exit_event == "checkpoint":
    m5.checkpoint(joinpath(cptdir, "cpt.%d"))
    exit_event = m5.simulate()
    exit_cause = exit_event.getCause()

But if you have your own python script, then you have to implement this 
behavior yourself.

Best,
Pedro.
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