Hi Adrian,

> -----Original Message-----
> From: adrian via gem5-users <gem5-users@gem5.org>
> Sent: 07 May 2021 09:36
> To: gem5-users@gem5.org
> Cc: adrian.barre...@gmail.com
> Subject: [gem5-users] Ruby in Arm?
>
> Hi guys,
>
> I've always used the classic memory model when running timing simulations
> using Arm, but I'd like to run some experiments using Ruby.
> I've seen some people using it and asking questions about it,  but my current
> version of gem5 shows this warning when enabling it:
>
> "warn: You are trying to use Ruby on ARM, which is not working properly
> yet."

That is a legacy warning from fs.py which has been removed in develop branch by:

https://gem5-review.googlesource.com/c/public/gem5/+/44509

And will be part of gem5 21.1

>
> Can anybody confirm me I can use it or how to properly use it?
>
> I'm employing this command:
>
> "./build/ARM/gem5.opt -d m5out/foo configs/example/fs.py --cpu-
> type=DerivO3CPU --ruby --num-cpus=4 --caches --l2cache --kernel
> binaries/vmlinux.arm64 --restore-with-cpu=DerivO3CPU --dtb
> binaries/armv8_gem5_v1_4cpu.dtb --mem-size=2GB --disk-image
> disks/gem5-ubuntu16.04-aarch64.img -r 1"

That seems a valid command line.
FYI I have added a simpler ARM ruby script in develop to use in lieu of fs.py:

configs/example/arm/ruby_fs.py

That will be also part of 21.1

Kind Regards

Giacomo

>
> Thanks a lot,
> Adrián
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