You should not add it there. O3CPU.py defines the variables (processor
parameters in this case) with their default values.
You should add it to your se.py or fe.py. After you instantiate your
processor, you can set this up. Something like:
system.cpu[?].numROBEntries = option.robsize
(Actually this is not the recommended way if you want to keep your code
clean, but it is the easier way. The better way is to make a separate
python file to take care of such things like what is done in CacheConfig.py)
Amin
On Wed, Jul 17, 2013 at 12:12 AM, Mahshid Sedghi
<mahshid.sed...@gmail.com>wrote:
> Thanks Tao and Amin. I am able to add options, but I am not able to assign
> it to numROBEntries. I mean when I use this in O3CPU.py:
>
> numROBEntries = options.robsize
>
> it doesn't work, since options module is not defined here. I tried
> importing options, but still didn't work. Can you elaborate on how to do
> this?
>
> Thanks.
>
>
> On Tue, Jul 16, 2013 at 9:32 PM, Zheng Wu <z...@uwaterloo.ca> wrote:
>
>> Hi,
>>
>> I am also curious about how to create new options as well. The
>> numRobEntries in O3CPU.py you mentioned has the following:
>>
>> "numROBEntries = Param.Unsigned(192, "Number of reorder buffer entries")"
>>
>> How is this related to options.robsize as mentioned?
>>
>>
>> In addition, what if I were to add another data member to a class and
>> want to use python options to set the value, what additional steps or
>> procedure do i need to perform? Do I need to do anything with SWIG or
>> something?
>>
>> Thanks,
>> Zheng Wu
>>
>>
>> On 2013-07-16, at 8:23 PM, Amin Farmahini <amin...@gmail.com> wrote:
>>
>> The last thing that Tao forgot to mention is to use options.robsize to
>> set the value of numROBEntries (numROBEntries is defined in
>> src/cpu/o3/O3CPU.py).
>>
>> Amin
>>
>>
>> On Tue, Jul 16, 2013 at 5:06 PM, Tao Zhang <tao.zhang.0...@gmail.com>wrote:
>>
>>> Hi Mahshid,****
>>>
>>> ** **
>>>
>>> You can use the “add_option” to add any desired options in the command
>>> line. To do this, you just add the line below (or something like it) at the
>>> beginning of your fs.py. ****
>>>
>>> ** **
>>>
>>> parser.add_option("-rob", "--robsize", type="int", default=128,
>>> help=”specify the rob size”);****
>>>
>>> ** **
>>>
>>> Then, after all options (including the default options and personalized
>>> options) have been parsed (in other words, the variable ‘options’ is
>>> initialized), you can simply leverage the option below.****
>>>
>>> ** **
>>>
>>> options.robsize****
>>>
>>> ** **
>>>
>>> After this, you can use the option in the command line, like****
>>>
>>> ** **
>>>
>>> gem5.opt configs/example/se.py --robsize=64 ……****
>>>
>>> ** **
>>>
>>> Note that if your option includes dash “-”, it will be converted into
>>> underscore “_”. For example, “--rob-size” produces representative
>>> “options.rob_size”. ****
>>>
>>> ** **
>>>
>>> Also, it is pretty helpful if you look at the Options.py to see how the
>>> default options are added into the system. The file is in configs/common/.
>>> ****
>>>
>>> ** **
>>>
>>> -Tao****
>>>
>>> ** **
>>>
>>> ** **
>>>
>>> *From:* gem5-users-boun...@gem5.org [mailto:gem5-users-boun...@gem5.org]
>>> *On Behalf Of *Mahshid Sedghi
>>> *Sent:* Tuesday, July 16, 2013 4:35 PM
>>> *To:* gem5 users mailing list
>>> *Subject:* [gem5-users] (no subject)****
>>>
>>> ** **
>>>
>>> Hello,****
>>>
>>> ** **
>>>
>>> I want to introduce a new option to the simulation script to define the
>>> ROB size, since I am doing experiments with different ROB sizes and would
>>> like to skip the procedure of rebuilding the gem5 again and again for
>>> different ROB sizes. Basically, I need to do a similar thing as the thread
>>> below:****
>>>
>>> ** **
>>>
>>> http://www.mail-archive.com/gem5-users@gem5.org/msg00480.html****
>>>
>>> ** **
>>>
>>> I am not still sure how to relate the option with the cpu parameters.
>>> I'd appreciate it if someone can give me some hints.****
>>>
>>> ** **
>>>
>>> Thanks,****
>>>
>>> Mahshid****
>>>
>>> _______________________________________________
>>> gem5-users mailing list
>>> gem5-users@gem5.org
>>> http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users
>>>
>>
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>
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