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.pl to
> 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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