I remember that "Andreas Hansson" said a json format is under development
which will close the gap between gem5 and mcpat. Any news for that?
Regards,
Mahmood
On Mon, Oct 22, 2012 at 3:44 AM, Amin Farmahini <amin...@gmail.com> wrote:
> Hi Hongyuan,
>
> I wonder if you have made any progress on using the McPAT script (
> m5_mcpat.pl) for gem5? I'd like to use that script to automatically get
> power numbers. So I was wondering if you could share your exprience or your
> updated script so lazy engineers like me save some time.
>
> Thanks,
> Amin
>
> On Fri, Oct 5, 2012 at 7:57 AM, Erik Tomusk <e.tom...@sms.ed.ac.uk> wrote:
>
>> Hi Hongyuan,
>>
>> From my personal experience, tool #1 has been broken for quite some time
>> and when I looked at it, it was far too complicated for me to
>> reverse-engineer and fix.
>>
>> I've had much more success with #2, but for various reasons, I can't make
>> my updated version available yet. It probably wouldn't do what you need it
>> to anyway.
>>
>> #2 might look a bit complex, but all it does is take a template McPAT XML
>> file (mcpat-template.xml) and plug in values from gem5's config.ini and
>> stats.txt. Most of the values in mcpat-template.xml are hardwired, but some
>> are of the form value="{...}". The script just replaces everything inside
>> {} with values from gem5.
>>
>> If I remember correctly, the problems with tool #2 are that the format of
>> stats.txt has changed slightly, there are some values in the template that
>> shouldn't be hardwired but are, and in some cases the template is picking
>> up the wrong value from gem5.
>>
>> To get #2 to work, the first thing you'd need to do is get m5-mcpat.plto
>> correctly fill in the template. Depending on how comfortable you are
>> with Perl, you might be better off rolling your own script in something
>> like Python to complete the template--m5-mcpat.pl has some particularly
>> nasty Perl in it. Then it's just case of figuring out what the values in
>> mcpat-template.xml correspond to in config.ini and stats.txt. Here you can
>> focus on the parameters you're actually researching. For the CPU core, this
>> isn't too difficult; if you're working on something like cache or NoC, it
>> could be hard.
>>
>> Keep in mind that McPAT isn't nearly as configurable as gem5, so a lot of
>> the things you can do in gem5 won't readily translate over to McPAT.
>>
>> Hope this helps.
>>
>> -Erik
>>
>>
>>
>> On 05/10/12 04:26, Ding, Hongyuan wrote:
>>
>> Dear All,
>> I'm new to gem5. Recently I tired to integrate McPAT on gem5. I found two
>> possible tools:
>> 1. m5-mcpat-parse-se.py, http://cseweb.ucsd.edu/~rstrong/
>> 2. m5-mcpat.pl, https://www.cl.cam.ac.uk/~acr31/sicsa/
>>
>> I tried a simple example in gem5 to get the output files:
>> *build/ARM/gem5.opt configs/example/se.py -c
>> tests/test-progs/hello/bin/arm/linux/hello*
>> *
>> *
>> I used m5-mcpat-parse-se.py to transform the output files but got the
>> following error information:
>> *ERROR, UNEXPECTED EXCEPTION *
>> *int() argument must be a string or a number, not 'NoneType' *
>> *Traceback (most recent call last): *
>> * File "m5-mcpat-parse-se.py", line 1896, in <module> *
>> * exit_code = main() *
>> * File "m5-mcpat-parse-se.py", line 1847, in main *
>> * run() *
>> * File "m5-mcpat-parse-se.py", line 1036, in run *
>> * parseSystemConfig(config_file_path, stat_file_path, out_file_path,
>> out_file_path_2, component_hash, stats_hash) *
>> * File "m5-mcpat-parse-se.py", line 1682, in parseSystemConfig *
>> * createComponentTree (cht, sht) *
>> * File "m5-mcpat-parse-se.py", line 1568, in createComponentTree *
>> * generateCalcStats(cht, sht) *
>> * File "m5-mcpat-parse-se.py", line 1494, in generateCalcStats *
>> * cht[options.system_name].statistics["total_cycles"] =
>> str(int(sht["%s.sim_ticks"%(options.system_name)])/int(fastest_clock))*
>> *TypeError: int() argument must be a string or a number, not 'NoneType' *
>> *
>> *
>> I used m5-mcpat.pl to get the xml file and used mcpat-exec.pl to run
>> McPAT, but also got errors:
>> *Parse error (couldn't find runtime_sec in XML file)*
>> *
>> *
>> Then I used McPAT directly to run the XML file generated by m5-mcpat.pl,
>> but got the following error information:
>> *ERROR: no valid tag organizations found*
>> *
>> *
>> I guess these two tools are too old to support the current version of
>> gem5.
>> Does anyone has a modified tools for McPAT integration or some clues on
>> how to fix it?
>> Thank you very much for any comments!
>>
>> --
>> Best regards,
>> Hongyuan Ding
>>
>>
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