That's interesting. Are you using Full System as well? I don't think FS behavior is supposed to be so dependent on the host environment!
On Fri, Sep 6, 2019 at 11:16 AM Gambord, Ryan <gambo...@oregonstate.edu> wrote: > I have found that gem5 behavior is sensitive to the execution environment. > I now run gem5 inside an ubuntu vm on qemu and have had much more > consistent results. I haven't tried running kvm gem5 inside a kvm qemu vm, > so not sure how that works, but might be worth trying. > > Ryan > > > On Fri, Sep 6, 2019, 08:07 Shehab Elsayed <shehaby...@gmail.com> wrote: > >> I was wondering if anyone is running into the same problem or if anyone >> has any suggestions on how to proceed with debugging this problem. >> >> On Mon, Jul 29, 2019 at 4:57 PM Shehab Elsayed <shehaby...@gmail.com> >> wrote: >> >>> Sorry for the spam. I just forgot to mention that the system >>> configuration I am using is mainly from >>> https://github.com/darchr/gem5/tree/jason/kvm-testing/configs/myconfigs. >>> <https://github.com/darchr/gem5/tree/jason/kvm-testing/configs/myconfigs> >>> >>> >>> Shehab Y. Elsayed, MSc. >>> PhD Student >>> The Edwards S. Rogers Sr. Dept. of Electrical and Computer Engineering >>> University of Toronto >>> E-mail: shehaby...@gmail.com >>> <https://webmail.rice.edu/imp/message.php?mailbox=INBOX&index=11#> >>> >>> >>> On Mon, Jul 29, 2019 at 4:08 PM Shehab Elsayed <shehaby...@gmail.com> >>> wrote: >>> >>>> I have set up a repo with gem5 that demonstrates the problem. The repo >>>> includes the latest version of gem5 from gem5's github repo with a few >>>> patches applied to get KVM working together with the kernel binary and disk >>>> image I am using. You can get the repo at >>>> https://github.com/ShehabElsayed/gem5_debug.git. >>>> <https://github.com/ShehabElsayed/gem5_debug.git> >>>> >>>> These steps should reproduce the problem: >>>> 1- scons build/X86/gem5.opt >>>> 2- ./scripts/get_fs_stuff.sh >>>> 3- ./scripts/run_fs.sh 8 >>>> >>>> I have also included sample m5term outputs for both a 2 thread run >>>> (m5out_2t) and an 8 thread run (m5out_8t) >>>> >>>> Any help is really appreciated. >>>> >>>> >>>> >>>> On Tue, Jul 23, 2019 at 11:01 AM Shehab Elsayed <shehaby...@gmail.com> >>>> wrote: >>>> >>>>> When I enable the Exec debug flag I can see that it seems to be stuck >>>>> in a spin lock (queued_spin_lock_slowpath) >>>>> >>>>> On Fri, Jul 19, 2019 at 5:28 PM Shehab Elsayed <shehaby...@gmail.com> >>>>> wrote: >>>>> >>>>>> Hello All, >>>>>> >>>>>> I have a gem5 X86 full system set up that starts with KVM cores and >>>>>> then switches to O3 cores once the benchmark reaches the region of >>>>>> interest. Right now I am testing with a simple multithreaded hello >>>>>> world benchmark. Sometimes the benchmark completes successfully while >>>>>> others gem5 just seems to hang after starting the benchmark. I believe it >>>>>> is still executing some instructions but without making any progress. The >>>>>> chance of this behavior (indeterminism) happening increases as the >>>>>> number of simulated cores or the number of threads created by the >>>>>> benchmark >>>>>> increases. >>>>>> >>>>>> Any ideas what might be the reason for this or how I can start >>>>>> debugging this problem? >>>>>> >>>>>> Note: I have tried the patch in https://gem5-review.googlesource >>>>>> .com/c/public/gem5/+/19568 but the problem persists. >>>>>> >>>>>> Thanks! >>>>>> >>>>> _______________________________________________ >> gem5-users mailing list >> gem5-users@gem5.org >> http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users > > _______________________________________________ > gem5-users mailing list > gem5-users@gem5.org > http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users
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