Re: [gem5-users] gem5-users Gem5 boot time

Tod Thu, 07 May 2015 02:46:13 -0700

So, Is your concern same to what Junaid shuja said, regarding time?

If yes, then you can try using the other image file, which i would say the cut-down version, linux-arm-ael.img.

Hopefully, that would save you in time.

Tod

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보낸사람: Junaid Shuja <[email protected]>
받는사람 : [email protected]
날짜: 2015년 5월 07일 목요일, 12시 12분 13초 +0900
제목: Re: [gem5-users] gem5-users Gem5 boot time

Respected,
Steve,
I am using the simple commands described on the gem5 website with the linux kernel also downloaded from gem5 website. I am doing it for ARM.
build/ARM/gem5.opt configs/example/fs.py --disk-image=/home/junaid/gem5/disks/arm-ubuntu-natty-headless.img
Is there any detailed CPU model in this?
Ruslan,
Are you also building the system for ARM?

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Today's Topics:

1. Gem5 boot time (Junaid Shuja)
2. Re: Gem5 boot time (Steve Reinhardt)
3. About Experimenting with DVFS (=?gb18030?B?sfmDzN5Htdg=?=)
4. Re: Gem5 boot time (Ruslan Bukin)

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Message: 1
Date: Wed, 6 May 2015 12:58:38 +0800
From: Junaid Shuja <[email protected]>
To: [email protected]
Subject: [gem5-users] Gem5 boot time
Message-ID:
<cajz-f9ncet03xyohoxscxr_h7ua-pzbv1wo3qanme0qcupy...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

Hi,
I was trying to find out boot time of different gem5 (opt, fast) build
options. The gem5.opt boots in 90 minuts on my dual core machine. while
gem5.fast takes 60 minutes. Why is this time so long as compared to other
emulators such as Qemu. Qemu boots in 40 seconds on my system.

--
Junaid Shuja
WHA130039
PhD Student, FSKTM
University of Malaya
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Message: 2
Date: Tue, 5 May 2015 22:31:56 -0700
From: Steve Reinhardt <[email protected]>
To: gem5 users mailing list <[email protected]>
Subject: Re: [gem5-users] Gem5 boot time
Message-ID:
<CAHgMoh96=[email protected]>
Content-Type: text/plain; charset="utf-8"

gem5 is a simulator, not an emulator. Nevertheless, those times seem very
long, unless you are using the detailed CPU model or something.

Steve
On May 5, 2015 9:58 PM, "Junaid Shuja" <[email protected]> wrote:

> Hi,
> I was trying to find out boot time of different gem5 (opt, fast) build
> options. The gem5.opt boots in 90 minuts on my dual core machine. while
> gem5.fast takes 60 minutes. Why is this time so long as compared to other
> emulators such as Qemu. Qemu boots in 40 seconds on my system.
>
> --
> Junaid Shuja
> WHA130039
> PhD Student, FSKTM
> University of Malaya
>
> _______________________________________________
> gem5-users mailing list
> [email protected]
> http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users
>
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Message: 3
Date: Wed, 6 May 2015 18:08:24 +0800
From: "=?gb18030?B?sfmDzN5Htdg=?=" <[email protected]>
To: "=?gb18030?B?Z2VtNS11c2Vycw==?=" <[email protected]>
Subject: [gem5-users] About Experimenting with DVFS
Message-ID: <[email protected]>
Content-Type: text/plain; charset="gb18030"

hello,everyone
when I try to test the simple simulation http://www.m5sim.org/Running_gem5#Experimenting_with_DVFS,the simulation is not running in there， I have troubles about:

gem5 Simulator System. http://gem5.org
gem5 is copyrighted software; use the --copyright option for details.

gem5 compiled May 5 2015 02:40:10
gem5 started May 6 2015 02:22:20
gem5 executing on ubuntu
command line: ./build/ARM/gem5.opt --debug-flags=DVFS,EnergyCtrl --debug-file=dfvs_debug.log 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_2cpus.dtb --disk-image=/home/jinsong/gem5/dist/disks/arm-ubuntu-natty-headless.img '--cpu-clock=[1 GHz,750 MHz,500 MHz]'

Global frequency set at 1000000000000 ticks per second
warn: DRAM device capacity (8192 Mbytes) does not match the address range assigned (512 Mbytes)
info: kernel located at: /home/jinsong/gem5/linux-linaro-tracking-gem5/vmlinux
Listening for system connection on port 5900
Listening for system connection on port 3456
0: system.remote_gdb.listener: listening for remote gdb #0 on port 7000
0: system.remote_gdb.listener: listening for remote gdb #1 on port 7001
info: Using bootloader at address 0x10
info: Using kernel entry physical address at 0x80008000
info: Loading DTB file: /home/jinsong/gem5/linux-linaro-tracking-gem5/arch/arm/boot/dts/vexpress-v2p-ca15-tc1-gem5_dvfs_2cpus.dtb at address 0x88000000
**** REAL SIMULATION ****
info: Entering event queue @ 0. Starting simulation...
warn: Not doing anything for miscreg ACTLR
warn: Not doing anything for write of miscreg ACTLR
warn: The clidr register always reports 0 caches.
warn: clidr LoUIS field of 0b001 to match current ARM implementations.
warn: The csselr register isn't implemented.
warn: instruction 'mcr dccmvau' unimplemented
warn: instruction 'mcr icimvau' unimplemented
warn: instruction 'mcr bpiallis' unimplemented
warn: instruction 'mcr icialluis' unimplemented
warn: instruction 'mcr dccimvac' unimplemented
warn: Tried to read RealView I/O at offset 0x60 that doesn't exist
warn: Tried to write RVIO at offset 0xa8 (data 0) that doesn't exist
warn: Tried to write RVIO at offset 0xa8 (data 0) that doesn't exist
warn: Tried to write RVIO at offset 0xa8 (data 0) that doesn't exist
warn: Tried to write RVIO at offset 0xa8 (data 0) that doesn't exist
warn: Tried to write RVIO at offset 0xa8 (data 0) that doesn't exist
warn: Tried to write RVIO at offset 0xa8 (data 0) that doesn't exist
warn: Tried to write RVIO at offset 0xa8 (data 0) that doesn't exist
warn: Tried to write RVIO at offset 0xa8 (data 0) that doesn't exist
warn: Tried to write RVIO at offset 0xa8 (data 0) that doesn't exist
info: Read CNTFREQ_EL0 frequency
info: trap check M:0 N:0 1:0 2:0 hdcr 0, hcptr 3fff, hstr 0
info: trap check M:0 N:0 1:0 2:0 hdcr 0, hcptr 3fff, hstr 0
info: trap check M:0 N:0 1:0 2:0 hdcr 0, hcptr 3fff, hstr 0
info: trap check M:0 N:0 1:0 2:0 hdcr 0, hcptr 3fff, hstr 0
info: trap check M:0 N:0 1:0 2:0 hdcr 0, hcptr 3fff, hstr 0
info: trap check M:0 N:0 1:0 2:0 hdcr 0, hcptr 3fff, hstr 0
info: trap check M:0 N:0 1:0 2:0 hdcr 0, hcptr 3fff, hstr 0
warn: Not doing anything for miscreg ACTLR
warn: Not doing anything for write of miscreg ACTLR
warn: instruction 'mcr bpiall' unimplemented
info: trap check M:0 N:0 1:0 2:0 hdcr 0, hcptr 3fff, hstr 0
info: trap check M:0 N:0 1:0 2:0 hdcr 0, hcptr 3fff, hstr 0
info: trap check M:0 N:0 1:0 2:0 hdcr 0, hcptr 3fff, hstr 0
info: trap check M:0 N:0 1:0 2:0 hdcr 0, hcptr 3fff, hstr 0
info: trap check M:0 N:0 1:0 2:0 hdcr 0, hcptr 3fff, hstr 0
info: trap check M:0 N:0 1:0 2:0 hdcr 0, hcptr 3fff, hstr 0
info: trap check M:0 N:0 1:0 2:0 hdcr 0, hcptr 3fff, hstr 0
info: trap check M:0 N:0 1:0 2:0 hdcr 0, hcptr 3fff, hstr 0
warn: CP14 unimplemented crn[1], opc1[0], crm[3], opc2[4]
warn: CP14 unimplemented crn[1], opc1[0], crm[0], opc2[4]
warn: CP14 unimplemented crn[0], opc1[0], crm[7], opc2[0]
warn: Returning zero for read from miscreg pmcr
warn: Ignoring write to miscreg pmcntenclr
warn: Ignoring write to miscreg pmintenclr
warn: Ignoring write to miscreg pmovsr
warn: Ignoring write to miscreg pmcr
warn: Ignoring write to miscreg pmcntenclr
warn: Ignoring write to miscreg pmintenclr
warn: Ignoring write to miscreg pmovsr
warn: Ignoring write to miscreg pmcr
warn: Tried to write RVIO at offset 0xa8 (data 0) that doesn't exist
warn: SCReg: Writing 0x8416740 to dcc0:site1:pos0:fn1:dev5
warn: Tried to write RVIO at offset 0xa8 (data 0) that doesn't exist
warn: Tried to write RVIO at offset 0xa8 (data 0) that doesn't exist
warn: Tried to write RVIO at offset 0xa8 (data 0) that doesn't exist
warn: Tried to write RVIO at offset 0xa8 (data 0) that doesn't exist

Thanks for any helpBing Liang
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Message: 4
Date: Wed, 6 May 2015 14:00:02 +0100
From: Ruslan Bukin <[email protected]>
To: gem5 users mailing list <[email protected]>
Subject: Re: [gem5-users] Gem5 boot time
Message-ID: <[email protected]>
Content-Type: text/plain; charset=utf-8

Hi

What OS you are running under gem5 simulation ?

I have the same problem - FreeBSD guest boot time is about 90 minutes,
while Linux kernel provided by gem5 community booting faster - 10 minutes.

Ruslan

On Wed, May 06, 2015 at 12:58:38PM +0800, Junaid Shuja wrote:
> Hi,
> I was trying to find out boot time of different gem5 (opt, fast) build
> options. The gem5.opt boots in 90 minuts on my dual core machine. while
> gem5.fast takes 60 minutes. Why is this time so long as compared to other
> emulators such as Qemu. Qemu boots in 40 seconds on my system.
> --
> Junaid Shuja
> WHA130039
> PhD Student, FSKTM
> University of Malaya

> _______________________________________________
> gem5-users mailing list
> [email protected]
> http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users

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--
Junaid Shuja
WHA130039
PhD Student, FSKTM
University of Malaya

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Re: [gem5-users] gem5-users Gem5 boot time

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