Hi Guru,
Can you try --cpu-type -Tao From: gem5-users-boun...@gem5.org [mailto:gem5-users-boun...@gem5.org] On Behalf Of Guru Prasad Sent: Thursday, May 30, 2013 2:56 PM To: gem5 users mailing list Subject: Re: [gem5-users] Timing CPU model Hi Andrws, I'm running the simulations right now.. Could I ask how this makes a difference? Also, (How) is this different from --cpu-type=arm_detailed? This will be my command line..do let me know if there is an issue with it build/ARM/gem5.fast configs/example/fs.py --kernel /home/guru/gem5/kernel/linux-3.3-armdroid/vmlinux --disk-image /home/guru/gem5/gem5-stable/system/disks/android_jb_pa_spec.img --machine-type=VExpress_EMM --clock=1GHz --cpu-type=timing --num-cpus=1 --caches --cpu-type=detailed R egards Guru On Thu, May 30, 2013 at 2:36 PM, Andrws Vieira <andrwsvie...@gmail.com> wrote: Hi Guru, Try to put in the end of command line: cpu-type=detailed Like this -> build/ARM/gem5.fast configs/example/fs.py --kernel /home/guru/gem5/kernel/linux-3.3-armdroid/vmlinux --disk-image /home/guru/gem5/gem5-stable/system/disks/android_jb_pa_spec.img --machine-type=VExpress_EMM --clock=4GHz --cpu-type=timing --num-cpus=1 --cpu-type=detailed []'s 2013/5/30 Guru Prasad <gurup...@buffalo.edu> Here are some results Atomic 01 GHz Time taken :0.1000006s Number :142617 04 GHz Time taken :0.1000003s Number :575327 10 GHz Time taken :0.1000003s Number :1428815 Timing 01 GHz Time taken :0.1000310s Number :4597 04 GHz Time taken :0.1000302s Number :4657 10 GHz Time taken :0.1000297s Number :4643 Maybe this is how timing is supposed to work..I'm not sure.. I just didn't understand it and wanted to ask other users Regards Guru On Thu, May 30, 2013 at 2:09 PM, Guru Prasad <gurup...@buffalo.edu> wrote: Hi Andreas, The output of my program is the same. I'm running primality test program that is given a time bound. I t returns the last number that it tested when it runs out of time. I would expect the last number computed to differ based on frequency specified while running Gem5. This differs significantly when using both, Atomic model and O3.. But regardless of the --clock parameter, timing model always gives me results that are very close. My command line parameters are build/ARM/gem5.fast configs/example/fs.py --kernel /home/guru/gem5/kernel/linux-3.3-armdroid/vmlinux --disk-image /home/guru/gem5/gem5-stable/system/disks/android_jb_pa_spec.img --machine-type=VExpress_EMM --clock=4GHz --cpu-type=timing --num-cpus=1 I am working with a slightly outdated gem5 source..I believe my revision is 9197 On Thu, May 30, 2013 at 1:57 PM, Andreas Hansson <andreas.hans...@arm.com> wrote: Hi Guru, Could you perhaps elaborate on "same results"? Are all stats exactly the same, or is the output of the program the same? Also, what config script are you running? Andreas From: Guru Prasad <gurup...@buffalo.edu> Reply-To: gem5 users mailing list <gem5-users@gem5.org> Date: Thursday, 30 May 2013 18:45 To: "gem5-users@gem5.org" <gem5-users@gem5.org>, "gem5-...@gem5.org" <gem5-...@gem5.org> Subject: [gem5-users] Timing CPU model I was recently running some tests using the timing CPU model and noticed that my cpu-bound workload was always producing the same results regardless of the --clock parameter specified. I tested this with --clock=0.1GHz (not sure if floating points work for parameters) --clock=1GHz --clock=4GHz --clock=10GHz Could anyone explain to me why this is the case? Is there something implicit in the timing model that I'm not quite grasping? -- 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. _______________________________________________ gem5-users mailing list gem5-users@gem5.org http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users _______________________________________________ gem5-users mailing list gem5-users@gem5.org http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users -- Andrws Aires Vieira Mestrando em Computação Universidade Federal do Rio Grande do Sul - UFRGS _______________________________________________ gem5-users mailing list gem5-users@gem5.org http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users
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