Hi,Giorgos
When I was into the m5term 3456 to change the options of the dvfs,I found this
directory /sys/devices/system/cpu/cpu0/cpufreq/ does exist,but
/sys/devices/system/cpu/cpu1/cpufreq/ does not exist.I creat 2 cpus , but only
have one can change the options of the dvfs. Ideally, there should be a
"cpufreq" for every core which provides the interface to change the frequency
of the core. What should I do to fix this problem?
My command line is
./build/ARM/gem5.opt --debug-flags=DVFS,EnergyCtrl --debug-file=dfvs_debug.log
--stats-file=ValMemLat8MBn2.5percore-stats.txt configs/example/fs.py
--cpu-type=AtomicSimpleCPU -n 2 --machine-type=VExpress_EMM
--kernel=/home/jinsong/gem5/linux-linaro-tracking-gem5/vmlinux
--dtb-filename=/home/jinsong/gem5/linux-linaro-tracking-gem5/arch/arm/boot/dts/vexpress-v2p-ca15-tc1-gem5_dvfs_per_core_2cpus.dtb
--disk-image=../disks/arm-ubuntu-natty-headless.img '--cpu-clock=[1 GHz,750
MHz,500 MHz]'
------------------ ???????? ------------------
??????: "Giorgo Kopanas";<george.kopa...@gmail.com>;
????????: 2015??5??28??(??????) ????8:09
??????: "gem5 users mailing list"<gem5-users@gem5.org>;
????: Re: [gem5-users]?????? ?????? ?????? about DVFS Futher Experiments in
Per-core DVFS
if you are sure that everything is loading up correctly and your fs.py
is correct you should try to experiment under this folder
/sys/devices/system/cpu/cpu0/cpufreq/ by changing the options of the
dvfs and more.
~Giorgos
2015-05-28 3:28 GMT-04:00 ?????G?? <553024...@qq.com>:
> thank you very much for your reply!
> I changed the fs.py script like this :
>
> test_sys.cpu = [TestCPUClass(socket_id=i)
> for i in xrange(np)]
> test_sys.cpu_clk_domain = [SrcClockDomain(clock = options.cpu_clock,
> voltage_domain =
> test_sys.cpu_voltage_domain,
> domain_id = i)
> for i in xrange(np)]
>
>
> test_sys.dvfs_handler.domains = test_sys.cpu_clk_domain
> test_sys.dvfs_handler.enable = 1
>
> if options.kernel is not None:
> test_sys.kernel = binary(options.kernel)
>
> if options.script is not None:
> test_sys.readfile = options.script
>
> if options.lpae:
> test_sys.have_lpae = True
>
> if options.virtualisation:
> test_sys.have_virtualization = True
>
> test_sys.init_param = options.init_param
>
> # For now, assign all the CPUs to the same clock domain
> test_sys.cpu = [TestCPUClass(clk_domain=test_sys.cpu_clk_domain[i],
> cpu_id=i)
> for i in xrange(np)]
> if is_kvm_cpu(TestCPUClass) or is_kvm_cpu(FutureClass):
> test_sys.vm = KvmVM()
>
> But I find every core also in the same clock (and voltage) domains.
> Could you tell me where it is wrong?what should I do next?
>
> Bing Liang
>
>
> ------------------ ???????? ------------------
> ??????: "Giorgos Kopanas";<george.kopa...@gmail.com>;
> ????????: 2015??5??26??(??????) ????7:19
> ??????: "gem5 users mailing list"<gem5-users@gem5.org>;
> ????: Re: [gem5-users]?????? ?????? about DVFS Futher Experiments in Per-core
> DVFS
>
> https://www.mail-archive.com/gem5-users@gem5.org/msg11068.html
> If I remember correctly you have to think how to patch them correctly
> in the fs.py.
>
> You are welcome,
> ~Giorgos
>
> 2015-05-26 7:03 GMT-04:00 ?????G?? <553024...@qq.com>:
>> Thanks for your help! I can't find this old mail.Could you give me the
>> link
>> of the mail?
>>
>> Bing Liang
>>
>>
>> ------------------ ???????? ------------------
>> ??????: "Giorgos Kopanas";<george.kopa...@gmail.com>;
>> ????????: 2015??5??26??(??????) ????5:31
>> ??????: "gem5 users mailing list"<gem5-users@gem5.org>;
>> ????: Re: [gem5-users]?????? about DVFS Futher Experiments in Per-core DVFS
>>
>> Check in the history of the mailing list there is an old mail saying how
>> to
>> do this. When i was trying it helped me. If you can not find it please
>> tell
>> so i can search for it and link it to you.
>>
>> Giorgos
>>
>> On May 26, 2015 5:29 AM, "Giorgos Kopanas" <george.kopa...@gmail.com>
>> wrote:
>>>
>>> On May 26, 2015 4:02 AM, "?????G??" <553024...@qq.com> wrote:
>>>>
>>>> HI Andreas??
>>>> thanks for your reply,Could you tell me the path of BaseCPU object in
>>>> gem5?
>>>>
>>>> Bing Liang
>>>>
>>>>
>>>> ------------------ ???????? ------------------
>>>> ??????: "Andreas Hansson";<andreas.hans...@arm.com>;
>>>> ????????: 2015??5??26??(??????) ????3:11
>>>> ??????: "gem5 users mailing list"<gem5-users@gem5.org>;
>>>> ????: Re: [gem5-users] about DVFS Futher Experiments in Per-core DVFS
>>>>
>>>> Hi Bing Liang,
>>>>
>>>> The socket_id is a parameter on the BaseCPU object, and you set it like
>>>> any other parameter, e.g. system.cpu[1].socket_id = 1
>>>>
>>>> Andreas
>>>>
>>>> From: ?????G?? <553024...@qq.com>
>>>> Reply-To: gem5 users mailing list <gem5-users@gem5.org>
>>>> Date: Tuesday, 26 May 2015 05:59
>>>> To: gem5-users <gem5-users@gem5.org>
>>>> Subject: [gem5-users] about DVFS Futher Experiments in Per-core DVFS
>>>>
>>>> Hi??everyone:
>>>> when I was test the DVFS experiments in per-core DVFS,the page is
>>>> http://www.m5sim.org/Running_gem5#Experimenting_with_DVFS ,there is a
>>>> sentence I don't know how to do. It is
>>>>
>>>> Change the socket_id to have a separate socket per CPU core
>>>>
>>>> Does anyone konws which file should I modify to change the socket_id
>>>> ??and
>>>> how to change the socket_id??
>>>> thanks for any help!
>>>> Bing Liang
>>>>
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