That's ok, but it would break if you had a different CPU model activated. The
better thing to do is something like:
class MyO3Cpu(DerivO3CPU)
issueToExecuteDelay = 2
decodeWidth = 4
…
and every where in Simulation.py replace DerivO3CPU with MyO3Cpu
Ali
On Jan 7, 2012, at 11:22 AM, Mehmet Burak Aykenar wrote:
> Hi, thanks for quick reply Mahmood, I appreciate it..
>
> I think I got the idea.. By looking inside the "config.ini" file I changed
> internal module attributes of the CPU by adding lines
>
> ...
> CPUClass.issueToExecuteDelay = 2
> CPUClass.decodeWidth = 4
> CPUClass.commitWidth = 4
> CPUClass.issueWidth = 4
> CPUClass.numIQEntries = 32
> ...
>
> and for the next simulation, I got what I expected. 'config.ini' and
> 'stats.txt' has changed (the IPC reduced significantly for example)
> I assume I did the correct thing :) ,means if you noticed what I have done
> is wrong please inform me :)
>
> Regards,
> Burak
>
> 2012/1/7 Mahmood Naderan <[email protected]>
> Hi
>
> >Can someone please explain what is the benefit of using script file (se.py)
> Not all attibutes can be passed to command line. For example, number
> of mshr, prefetcher, .... So they should be defined in script
>
>
> >Is there any easier option to do this modification?
> See how Caches.py works and is called in se.py
> Then you can also create a similar config file for cpu, and modify the
> parameters you want.
>
> Hope that helps
>
> On 1/7/12, Mehmet Burak Aykenar <[email protected]> wrote:
> > Hello everyone,
> >
> > I have two questions:
> >
> > 1) I see two ways (if I am not wrong) to modify the properties of the CPU
> > and memory hierarchy. The first one is using command line options like "-n
> > 2" or "--l1d_size=L1D_SIZE" etc.. The second one is modifying the "se.py"
> > configuration file and adding objects and assign attributes of the objects
> > new values for example: "cpu = SimpleCPU(clock = '2GHz', width = 2)"
> >
> > Is there any difference between these two ways to modify the CPU or memory
> > properties? Can someone please explain what is the benefit of using script
> > file (se.py)
> >
> > 2) I want to change the internal structures of the CPU like "numIQEntries"
> > or "commitWidth".. I think I need to change the O3CPU.py file in the /src
> > directory and build the gem5 again.. Is there any easier option to do this
> > modification? Building gem5 each time is a time consuming and inefficient
> > way..
> >
> > Thanks in advance,
> > Burak
> > --
> > *Mehmet Burak AYKENAR
> > Graduate Student of Computer Engineering
> > Research Assistant
> > **TOBB ETU Z-10
> > Microprocessors Laboratory*
> > *
> > mbaykenar.etu.edu.tr
> > [email protected]*
> >
>
>
> --
> --
> // Naderan *Mahmood;
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>
>
>
>
>
> --
> Mehmet Burak AYKENAR
> Graduate Student of Computer Engineering
> Research Assistant
> TOBB ETU Z-10
> Microprocessors Laboratory
>
> mbaykenar.etu.edu.tr
> [email protected]
> _______________________________________________
> gem5-users mailing list
> [email protected]
> http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users
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