On Tue, Jun 5, 2018 at 3:21 PM, Georgios S. Bousdras
wrote:
> Dear all,
>
> I wonder if It is possible to run the gem5 on a multi-core mode(like the
> scons build/ARM/gem5.opt -j “n”) in order to reduce the simulation time.
>
No: https://github.com/cirosantilli-work/gem5-issues/issues/15
> In addition, what is the difference between armv8_gem5_v1_big_little_2_2.dtb
> and armv8_gem5_v1_big_little_2_4.dtb?
> I ask because I want to simulate a 8 core big.LITTLE system of 4 big cores
> and 4 little cores and I don’t know which is a suitable .dtb file.
>
Observe the contents of dtbs as explained at:
https://stackoverflow.com/questions/14000736/tool-to-visualize-the-device-tree-file-dtb-used-by-the-linux-kernel/39931834#39931834
This shows that 2_4 means 2 little and 4 big and won't work.
For 4x4, you need to either:
- convert to dts, modify it manually, reconvert to dtb
- modify the in tree dts used to generate the dtb and run make again
- fs_bigLITTLE.py has an automatic dtb generation if you don't use the
--dtb flag, it should in theory work. Have a look at the script
source.
> Best Regards,
> George
>
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