yeah correct. For benchmarks like PARSEC and SPLASH-2, it's better to go for running time.
On Wed, Nov 30, 2011 at 12:09 AM, Steve Reinhardt <ste...@gmail.com> wrote: > I'm specifically talking about multiprogrammed workloads, whether they are > run on multithreaded or multicore hardware. For a single program that's > internally multithreaded, total running time is best. In neither case is > unweighted IPC (or sums or averages of unweighted IPCs) a useful metric. > > Geometric vs. harmonic vs. arithmetic means is an orthogonal issue. > > Steve > > > On Tue, Nov 29, 2011 at 9:31 AM, biswabandan panda <biswa....@gmail.com>wrote: > >> i have referred to multiprogrammed ones, for multithreaded ones IPC is >> not the right metric, u can use the total running time as a metric for the >> performance >> >> >> On Tue, Nov 29, 2011 at 10:33 PM, Mahmood Naderan >> <mahmood...@gmail.com>wrote: >> >>> You mean geometric mean? >>> >>> On 11/29/11, Steve Reinhardt <ste...@gmail.com> wrote: >>> > Note that total IPC is a really lousy metric for multithreaded system >>> > performance. You really need to weight the thread IPCs by their >>> "native" >>> > IPCs in a single-threaded environment to get a meaningful >>> speedup/slowdown >>> > metric. >>> > >>> > Steve >>> > >>> > On Fri, Nov 25, 2011 at 4:35 AM, biswabandan panda >>> > <biswa....@gmail.com>wrote: >>> > >>> >> sum total of overall IPC. >>> >> >>> >> >>> >> On Fri, Nov 25, 2011 at 5:56 PM, Mahmood Naderan >>> >> <mahmood...@gmail.com>wrote: >>> >> >>> >>> Hi, >>> >>> Seems that there is no stat for IPC in a >>> >>> multiprocess/multiprogram/multicore simulation. Only IPC of each core >>> >>> is calculated. >>> >>> >>> >>> So how can we decide the overall IPC is improved or not? >>> >>> -- >>> >>> // Naderan *Mahmood; >>> >>> _______________________________________________ >>> >>> gem5-users mailing list >>> >>> gem5-users@gem5.org >>> >>> http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users >>> >>> >>> >> >>> >> >>> >> >>> >> -- >>> >> >>> >> *thanks®ards >>> >> * >>> >> *BISWABANDAN* >>> >> >>> >> >>> >> >>> >> >>> >> >>> >> >>> >> _______________________________________________ >>> >> gem5-users mailing list >>> >> gem5-users@gem5.org >>> >> http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users >>> >> >>> > >>> >>> >>> -- >>> -- >>> // Naderan *Mahmood; >>> _______________________________________________ >>> gem5-users mailing list >>> gem5-users@gem5.org >>> http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users >>> >> >> >> >> -- >> >> *thanks®ards >> * >> *BISWABANDAN* >> >> >> >> >> >> >> _______________________________________________ >> gem5-users mailing list >> gem5-users@gem5.org >> http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users >> > > > _______________________________________________ > gem5-users mailing list > gem5-users@gem5.org > http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users > -- *thanks®ards * *BISWABANDAN*
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