Hi Rahul, On Monday 10 November 2014 09:08:46 rahul shrivastava via gem5-users wrote: > I am following the steps mentioned in the documentation to configure > per-core dvfs. I am trying to simulate four cores by giving the following > command
> > M5_PATH=$(pwd)/.. ./build/ARM/gem5.opt --debug-flags=DVFS,EnergyCtrl \ > --debug-file=dfvs_debug.log configs/example/fs.py > --cpu-type=AtomicSimpleCPU \ > -n 4 --machine-type=VExpress_EMM > --kernel=../linux-linaro-tracking-gem5/vmlinux \ > --dtb-filename=../linux-linaro-tracking-gem5/arch/arm/boot/dts/\ > vexpress-v2p-ca15-tc1-gem5_dvfs_per_core_4cpus.dts \ > --disk-image=../disks/arm-ubuntu-natty-headless.img \ --cpu-clock=\['1 > GHz','750 MHz','500 MHz'\] > > I am using the above dtb to configure per core dvfs and start the > simulation. Could you try starting this with the actual dtB file, rather than the dtS? dtsc should help you getting this compiled. > However, when I check /sys/devices/system/cpu/cpu<1,2,3>/online, all > the cores are offline except core0. When I try to write '1' to > 'online' file for any core, it throws the following error > > CPU1: failed to boot: -38 Yep, that happens when the kernel cannot initialise the other cores for one reason or another. Could you do cat /proc/cpuinfo and post that, in addition to the suggestion above, please? Thanks, Stephan -- IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you. ARM Limited, Registered office 110 Fulbourn Road, Cambridge CB1 9NJ, Registered in England & Wales, Company No: 2557590 ARM Holdings plc, Registered office 110 Fulbourn Road, Cambridge CB1 9NJ, Registered in England & Wales, Company No: 2548782 _______________________________________________ gem5-users mailing list gem5-users@gem5.org http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users
