Re: [gem5-users] Full system simulation freeze

2019-07-22 Thread Armel Jeatsa
Hello, Yes but i use TimingSimpleCPU. kind regards, Armel. -- *JEATSA TOULEPI Armel* Étudiant En Génie Informatique Tel: +237 650771894 / 655296800 Le lun. 22 juil. 2019 à 01:20, Gabe Black a écrit : > Hi. Simulations with the KVM CPUs run on actual hardware and are only as > deterministic as

Re: [gem5-users] Full system simulation freeze

2019-07-19 Thread Armel Jeatsa
Hello, I tried the patch and the problem persists. As *Shehab Elsayed* said, the problem is more likely to arise when the number of CPUs increases. For me, the simulation ends with only *one CPU* and I have to set a large *L2cache_size (4MB)* for the simulation to end with *2 CPUs*. From *3 CPUs*

Re: [gem5-users] Full system simulation freeze

2019-07-19 Thread Armel Jeatsa
Hello, Thank you for your reply. I will try the patch. I think the command line is deterministic. I realized that when I set the number of cpu to 1 or 2, the simulation runs normally but from 3 it freezes in line *"brought up x cpu"*. kind regards, Armel. -- *JEATSA TOULEPI Armel* Étudiant En Gén

Re: [gem5-users] Full system simulation freeze

2019-07-18 Thread Jason Lowe-Power
Hmm... that's strange. I would expect that command line to be completely deterministic. However, Brandon just submitted a patch that fixes an undefined behavior error for x86. It should be merged soon, but if you'd like to try it now see https://gem5-review.googlesource.com/c/public/gem5/+/19568

Re: [gem5-users] Full system simulation freeze

2019-07-18 Thread Armel Jeatsa
Hello, I use the command : *build/X86/gem5.opt configs/example/fs.py --disk-image=$(pwd)/full-system-images/disks/linux-x86.img --kernel=$(pwd)/full-system-images/binaries/x86_64-vmlinux-2.6.22.9.smp --cpu-type=TimingSimpleCPU -n 4 --caches --l1i_size=8kB --l1d_size=8kB --l2cache --l2_size=256kB*

Re: [gem5-users] Full system simulation freeze

2019-07-15 Thread Jason Lowe-Power
Hi Armel, It's unlikely the performance of the host machine. gem5 should be deterministic, and the underlying host machine shouldn't make a difference. Since you're seeing non-deterministic behavior, you should ask "what about the simulation is changing?". Is it some configuration options (e.g.,

[gem5-users] Full system simulation freeze

2019-07-15 Thread Armel Jeatsa
Hello everyone, Sometimes when i launch full system simulation, the process seems to be freezing at line "*Brought up 2 CPUs*" or at line "*Freeing unused kernel memory: 248k freed*", and other times it launches well and show the m5 terminal. What can be the cause of the problem?? could it be rel