"--trace-flags" is obsolete, it's been replaced by "--debug-flags"
Jack is suggesting that you run the commands manually just to verify that they are correct and generating output before you try to use them with tracediff. Tracediff runs two different commands at the same time and compares their output, so it won't work to compare runs where you make the change by directly editing a config file, since you can't have two different versions of the same file with the same name at the same time. You have to expose the thing you want to change as a command-line parameter, rename one of the config files, run in two separate clones of the source tree, or something like that. Steve On Wed, Feb 15, 2012 at 3:52 AM, Mahmood Naderan <[email protected]>wrote: > the two commands are: > > -build/X86_SE/m5.debug -d tracediff-5552-1 > --trace-flags=Exec,-ExecTicks configs/example/cmp.py -F 500000000 > --maxtick 1000000000000 --caches --l2cache --l2size 4MB -b cactus 2>&1 > | > +build/X86_SE/m5.debug -d tracediff-5552-2 > --trace-flags=Exec,-ExecTicks configs/example/cmp.py -F 500000000 > --maxtick 1000000000000 --caches --l2cache --l2size 2MB -b cactus 2>&1 > | > > > You mean that I must manually execute then and the manually compare > the trace files. Right? > > What is the power of tracediff then? It only generate the commands? > > On 2/15/12, Jack Harvard <[email protected]> wrote: > > The warning message is due to not using "--debug-flags", as you used > > "--trace-flags". You can just run one of the two commands being > > generated, and see what happens, just to make sure all the options are > > correctly applied. > > > > Jack Harvard > > > > On Wed, Feb 15, 2012 at 10:14 AM, Mahmood Naderan <[email protected]> > > wrote: > >> Well I tried something but see no result: > >> > >> mahmood@tu1:gem5$ util/tracediff build/X86_SE/m5.debug > >> --trace-flags="Exec,-ExecTicks" configs/example/cmp.py -F 500000000 > >> --maxtick 1000000000000 --caches --l2cache "--l2size 4MB|--l2size 2MB" > >> -b cactus > >> **** > >> **** WARNING: no debug flags set... you may not be diffing much! > >> **** > >> Executing /home/mahmood/gem5/util/rundiff 'build/X86_SE/m5.debug -d > >> tracediff-5552-1 --trace-flags=Exec,-ExecTicks configs/example/cmp.py > >> -F 500000000 --maxtick 1000000000000 --caches --l2cache --l2size 4MB > >> -b cactus 2>&1 |' 'build/X86_SE/m5.debug -d tracediff-5552-2 > >> --trace-flags=Exec,-ExecTicks configs/example/cmp.py -F 500000000 > >> --maxtick 1000000000000 --caches --l2cache --l2size 2MB -b cactus 2>&1 > >> |' 2>&1 > tracediff-5552.out > >> > >> > >> Immediately the execution ends. There are no files in > >> tracediff-5552-1/ and tracediff-5552-2/ > >> > >> What is wrong with that? > >> > >> On 2/15/12, Jack Harvard <[email protected]> wrote: > >>> Tracediff is a small perl script, ./util/tracediff, have a look at the > >>> file directly, that should answer your question. > >>> > >>> Jack Harvard > >>> > >>> On Tue, Feb 14, 2012 at 3:10 PM, Mahmood Naderan <[email protected] > > > >>> wrote: > >>>> Hi > >>>> How can I use tracediff? The document at > >>>> http://gem5.org/Debugging#tracediff is not very clear. > >>>> > >>>> Consider I want to run two simulations with different cache size. The > >>>> benchmark and instructions are equal. Normal steps are: > >>>> > >>>> 1- chanage L2Cache size to 2MB in common/Caches.py > >>>> 2- run build/X86_SE/m5.fast configs/example/cmp.py --caches --l2cache > -b > >>>> gcc > >>>> 3- chanage L2Cache size to 512kB in common/Caches.py > >>>> 4- run build/X86_SE/m5.fast configs/example/cmp.py --caches --l2cache > -b > >>>> gcc > >>>> > >>>> seems that tracediff only works when command lines change. Is that > >>>> right? > >>>> -- > >>>> // Naderan *Mahmood; > >>>> _______________________________________________ > >>>> gem5-users mailing list > >>>> [email protected] > >>>> http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users > >>> _______________________________________________ > >>> gem5-users mailing list > >>> [email protected] > >>> http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users > >>> > >> > >> > >> -- > >> -- > >> // Naderan *Mahmood; > >> _______________________________________________ > >> gem5-users mailing list > >> [email protected] > >> http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users > > _______________________________________________ > > gem5-users mailing list > > [email protected] > > http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users > > > > > -- > -- > // Naderan *Mahmood; > _______________________________________________ > gem5-users mailing list > [email protected] > http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users >
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