Thank you for the clarification. On Fri, Aug 30, 2019 at 12:43 PM Jason Lowe-Power <ja...@lowepower.com> wrote:
> Hi Abhishek, > > You have to use something like the hack back script if you want to change > your script parameter after checkpointing. When you checkpoint, it saves > the state of the system. When you restore, it's restored with *exactly that > state.* I.e., your original rcS file is still on the disk. If you want to > change the rcS file, your original file must call m5 readfile twice. Hence, > the hack back script calls it a second time (the first time is, by > definition, outside of the rcS script). > > Jason > > On Fri, Aug 30, 2019 at 9:39 AM Abhishek Singh < > abhishek.singh199...@gmail.com> wrote: > >> Hi Pouya and Jason, >> Yes the binary is present. >> My question is it necessary to run the binary after the checkpoint >> command that is after “/sbin/m5 checkpoint” >> And if yes why? >> >> On Fri, Aug 30, 2019 at 12:30 PM Pouya Fotouhi <pfoto...@ucdavis.edu> >> wrote: >> >>> Hi Abhishek, >>> >>> Do you have your binary (hello_world) on your disk image? To be more >>> precise, was the binary on the disk image when you took the checkpoint? >>> >>> Best, >>> >>> On Fri, Aug 30, 2019 at 8:26 AM Abhishek Singh < >>> abhishek.singh199...@gmail.com> wrote: >>> >>>> Hello Everyone, >>>> >>>> I have created the checkpoint for booting up Linux image. >>>> My command line is >>>> """ >>>> >>>> build/X86/gem5.opt >>>> --outdir=/home/abs218/gem5_dir_local/gem5_bl_fs/common_checkpoint_chkpt >>>> --stats-file=common_checkpoint_chkpt.simout >>>> --dump-config=common_checkpoint_chkpt.ini --redirect-stderr >>>> --stderr-file=common_checkpoint_chkpt.e configs/example/fs.py >>>> --checkpoint-dir=/home/abs218/gem5_dir_local/gem5_bl_fs/common_checkpoint_chkpt >>>> --disk-image=/home/abs218/gem5_dir_local/gem5_bl_fs/intel.img >>>> --kernel=/home/abs218/new_fs/gem5/linux-4.8.13/vmlinux >>>> --script=./common_checkpoint.rcS --caches --l2cache >>>> >>>> >>>> """ >>>> >>>> my common_checkpoint.rcS is >>>> >>>> """ >>>> >>>> #!/bin/sh >>>> >>>> /sbin/m5 checkpoint >>>> >>>> echo "Done :D" >>>> >>>> /sbin/m5 exit >>>> >>>> >>>> """ >>>> >>>> I wanted to use this checkpoint and try to run a hello_world benchmark. >>>> So I modify my common_checkpoint.rcS script to >>>> """ >>>> >>>> #!/bin/sh >>>> >>>> ./hello_world >>>> >>>> echo "Done :D" >>>> >>>> /sbin/m5 exit >>>> >>>> """ >>>> And my gem5 command line is >>>> """ >>>> ./build/X86/gem5.opt >>>> --outdir=/home/abs218/gem5_dir_local/gem5_bl_fs/common_checkpoint_chkpt >>>> --stats-file=common_checkpoint_chkpt_restore.simout >>>> --dump-config=common_checkpoint_chkpt_restore.ini configs/example/fs.py >>>> --checkpoint-restore=1 >>>> --checkpoint-dir=/home/abs218/gem5_dir_local/gem5_bl_fs/common_checkpoint_chkpt >>>> --restore-with-cpu=AtomicSimpleCPU --cpu-type=DerivO3CPU --caches --l2cache >>>> --disk-image=/home/abs218/gem5_dir_local/gem5_bl_fs/intel.img >>>> --kernel=/home/abs218/new_fs/gem5/linux-4.8.13/vmlinux >>>> --script=./common_checkpoint.rcS >>>> """ >>>> But my "system.pc.com_1.device" output after restoring is >>>> "" >>>> >>>> Done :D >>>> "" >>>> That is, it did not run the hello_world program! >>>> >>>> I have made no changes to gem5, the commit I am using is " >>>> 2a98a994df296f818b05da90ba073d879562da04" >>>> >>>> >>>> My question is: >>>> Is it not possible to create a common checkpoint and then run the >>>> benchmark using that checkpoint? >>>> Are my steps incorrect to create or restore from the checkpoint? >>>> >>>> >>>> >>>> >>>> Best regards, >>>> >>>> Abhishek >>>> >>> _______________________________________________ >>>> gem5-users mailing list >>>> gem5-users@gem5.org >>>> http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users >>> >>> >>> >>> -- >>> Pouya Fotouhi >>> PhD Candidate >>> Department of Electrical and Computer Engineering >>> University of California, Davis >>> _______________________________________________ >>> gem5-users mailing list >>> gem5-users@gem5.org >>> http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users >> >>
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