Hey Bobby,
Thank you very much for your prompt reply. At least your example below "just
worked", wow a very new and different gem5 experience. Really loooking forward
to the new infrastructure.
This was what I hoping for, now I have a known working configuration and can
start tracking down the differences to our config and hopefully get that to
work. I will report back if I do not succeed. :-)
Thanks again,
Antoine
On Thu, Oct 28 15:06, Bobby Bruce wrote:
> Hey Antoine,
>
> First of all, multi-core TimingSimple with classic caches will not work,
> you have to use Ruby or run a single-core simulation.
>
> I think we have something in development which can help you out. You can
> run a full-system X86 Ubuntu simulation with the Ruby MESI Two Level
> protocol with the following:
>
> ```
> git clone https://gem5.googlesource.com/public/gem5
> cd gem5
> git checkout develop
> scons build/X86_MESI_Two_Level/gem5.opt -j`nproc`
> ./build/X86_MESI_Two_Level/gem5.opt
> configs/example/gem5_library/x86-ubuntu-run.py
> ```
>
> If you have KVM on your system this will boot Ubuntu with KVM then run a
> very simple script using the Timing Simple CPU. If you don't have KVM then
> you can alter the simulation at line 94 in the
> `configs/example/gem5_library/x86-ubuntu-run.py` file, and just run the
> whole boot with the Timing Simple CPU.
>
> The `x86-ubuntu-run.py` script builds upon our gem5 Python Library, which
> is still under development, but you can look into it (under
> `src/python/gem5`) to see how it all fits together and works. The
> `x86-ubuntu-run.py` script itself should be relatively self-explanatory,
> but please do not hesitate to get back to me if there's something you don't
> understand.
>
> Getting a full-system setup working is _tough_ if building a simulation
> from scratch which is part of the reason we're moving more towards
> providing a library for such things.
>
> Kind regards,
> Bobby
> --
> Dr. Bobby R. Bruce
> Room 3050,
> Kemper Hall, UC Davis
> Davis,
> CA, 95616
>
> web: https://www.bobbybruce.net
>
>
> On Thu, Oct 28, 2021 at 10:55 AM Antoine Kaufmann via gem5-users <
> gem5-users@gem5.org> wrote:
>
> > Hi Everyone,
> >
> > Do we have any known-working configurations for x86 multi-core full system
> > simulations with caches?
> >
> > We have successfully been using single core configs for more than a year
> > now,
> > but our attempts at anything multi-core have so far not been successful,
> > with
> > problems ranging from gem5 crashing to Linux getting stuck at boot.
> >
> > We have been using the TimingSimple CPU and tried both classic and ruby
> > with
> > various protocols.
> >
> > Does anyone have pointers to working configurations? Or is this something
> > that
> > is known to be fundamentally broken?
> >
> > Thanks in advance,
> > Antoine
> >
> > --
> > Antoine Kaufmann
> >
> > ___
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--
Antoine Kaufmann
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