Hi Azadeh, I'm not certain what the problem is. However, you don't have to use the O3 CPU to "restore-with". That option is the CPU that is used during checkpoint restore, not the CPU used once checkpoint restore is complete on the main simulation. To choose which CPU to use for the main simulation use --cpu-type.
How did you come to the conclusion that the system didn't load the cjpeg.rcS file? Did you look at the terminal output of the system while it was running the main simulation (after restoring from the checkpoint)? Another thing you can do is restore with and without a script and connect via m5term (see gem5/util/term) and double check the guest system is in the state you expect. Cheers, Jason On Wed, Jun 29, 2016 at 1:16 PM Azadeh Shirvanian < azadeh.shirvan...@gmail.com> wrote: > Dear all, > > I have got stuck somewhere regarding checkpoints. What I need to do is > running an image processing application, which takes an image as the input > and produces an image as the output, in full system mode and with X86. > > I used *hack_back_ckpt.rcS* to create a checkpoint after booting Linux > using this command: > > build/X86/gem5.opt configs/example/fs.py --cpu-type=atomic > --script=configs/boot/hack_back_ckpt.rcS > > And to restore from that created checkpoint: > > build/X86/gem5.opt configs/example/fs.py --cpu-clock="1GHz" > --hit-latency=4 --caches --restore-with-cpu=DerivO3CPU -r 1 > --script=configs/boot/cjpeg.rcS > > I checked the simulation after 22 hours and everything looked like the day > before (The simulation was not finished yet). It seems that it has started > from the checkpoint, but it has not seen the script (cjpeg.rcS) at all... > My reason for it is that I mounted the disk image and there was no output > image created yet. > > I stopped the simulation and started it again without the --script option, > the result was the same. I stopped that too and started the simulation > without --restore-with-cpu option, but nothing changed. > > I think I have missed something in the way I restore from the checkpoint. > I do not know what that is. I should also mention that before creating the > checkpoint, everything was working (i.e., the simulation terminated with an > output image). The only problem was that I could not find the output image > on the disk image after the simulation was finished. So I modified > * FSConfig.py* a little before creating the checkpoint. > > I have attached the simulation outputs of both creating the checkpoint and > restoring from it, as well as the terminal output of creating the > checkpoint. The terminal output file for restoring from the checkpoint was > empty. > > I would appreciate any help or idea. > > Best regards, > Azadeh > _______________________________________________ > gem5-users mailing list > gem5-users@gem5.org > http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users
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