integrating mcpat with gem5
Hi all,
I am using gem5-stable-07352f119e48 (most recent stable version) and running Parsec benchmarks on X86. I am trying to integrate it with McPat. I read somewhere that the newly added config.json file solves the previously encountered parsing problems. Is that true or what is the best way to do it?
I am pretty new at gem5 and do not have any experience with pearl (there is also a pearl script doing a similar conversion but it is said to require some modification as well). Are there any sources explaining the use of config.json file or any other way of integrating McPat to gem5? Please help me.
Best,
Fulya Kaplan
Hi Fulya,
The m5-mcpat.pl and mcpat-template.xml on the website
https://www.cl.cam.ac.uk/~acr31/sicsa/ work for me with some modification.
- First, you should make sure the all the value field in the
mcpat-template.xml can be found in the stats.txt or config.ini files.
Otherwise, modify them according to these two files generated by Gem5.
For example:
change <stat name="memory_reads" value="{stats.system.l2.ReadReq_misses}"/>
to <stat name="memory_reads" value="{stats.system.l2.ReadReq_misses::total}"/>
Because we can not find ReadReq_misses in stats.txt. Instead, there is
ReadReq_misses::total in the stats.txt.
- The other thing is to modify m5-mcpat.pl to deal with nan and inf in
stats.txt. Otherwise, there will be error like: Failed to parse stats
system.physmem.writeRowHitRate nan
The perl file is pretty easy to understand and modify.
change :
sub loadStats() {
my ($result,$file) = ({},@_);
open(WORKING,"<$file") or die "Failed to open stats file $file\n";
while(my $line = <WORKING>) {
chomp($line);
if ($line =~ /^(\S+)\s+([\d.-]+|no_value)\s/) {
$result->{$1} = $2;
}
to:
sub loadStats() {
my ($result,$file) = ({},@_);
open(WORKING,"<$file") or die "Failed to open stats file $file\n";
while(my $line = <WORKING>) {
chomp($line);
if ($line =~ /^(\S+)\s+([\d.-]+|non|inf)\s/) {
$result->{$1} = $2;
}
Also, if you want to set the fields that do not have value in the
stats file to Zero.
You could change:
if ($r eq "") {
print STDERR "Warning: empty result for $f\n";
}
return eval $e;
to
if ($r eq "") {
print STDERR "Warning: empty result for $f\n";
*$e = 0*
}
return eval $e;
Hope that helps.
Best!
On Mon, Jul 15, 2013 at 10:18 PM, fulya <fkaplan3(a)bu.edu> wrote:
Hi all,
I am using gem5-stable-07352f119e48 (most recent stable version) and
running Parsec benchmarks on X86. I am trying to integrate it with McPat. I
read somewhere that the newly added config.json file solves the previously
encountered parsing problems. Is that true or what is the best way to do it?
I am pretty new at gem5 and do not have any experience with pearl (there
is also a pearl script doing a similar conversion but it is said to require
some modification as well). Are there any sources explaining the use of
config.json file or any other way of integrating McPat to gem5? Please help
me.
Best,
Fulya Kaplan
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