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/
<http://cseweb.ucsd.edu/%7Erstrong/>
2. m5-mcpat.pl, https://www.cl.cam.ac.uk/~acr31/sicsa/
<https://www.cl.cam.ac.uk/%7Eacr31/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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