that is also possible. Since lbm is floating point benchmark, my concern is that some x87 instruction are not implemented so they are actually *skipped*.
Hope that I am able to state the problem. On 1/13/12, Paul Rosenfeld <dramnin...@gmail.com> wrote: > Well, you have to look at the complexity of the instructions in the binary > in terms of how they are simulated. If bzip2 uses some specific > instructions in ISA X which are then simulated in an inefficient way on > host machine Y, you could have a big discrepancy in how long each tick > takes to execute. > > So I'd say this is perfectly possible. > > On Fri, Jan 13, 2012 at 9:03 AM, Mahmood Naderan > <mahmood...@gmail.com>wrote: > >> with the above config, ipc of bzip2 is 1.53 and lbm is 0.5 >> >> On 1/13/12, Mehmet Burak Aykenar <mbayke...@etu.edu.tr> wrote: >> > I am not quite sure but the "IPC" of 'lbm' might be higher than 'bzip2' >> .. >> > In my tests, benchmarks having higher "IPC" usually finish earlier.. >> > >> > Regards, >> > Burak >> > >> > 2012/1/13 Mahmood Naderan <mahmood...@gmail.com> >> > >> >> hi >> >> I ran two benchmarks at the same time with similar number of fast >> >> forwards and maxticks. But the lbm (with reference input which is big) >> >> reaches the end much much sooner than bzip2 (with test input). >> >> >> >> >> >> configs/example/cmp.py --prog-interval=1000000 -F 1000000 --maxtick >> >> 100000000000 -d --caches --l2cache -b lbm >> >> >> >> configs/example/cmp.py --prog-interval=1000000 -F 1000000 --maxtick >> >> 100000000000 -d --caches --l2cache -b bzip2_dryer >> >> >> >> Is that normal? >> >> -- >> >> // Naderan *Mahmood; >> >> _______________________________________________ >> >> gem5-users mailing list >> >> gem5-users@gem5.org >> >> http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users >> >> >> >> >> >> !DSPAM:6374,4f101b927441533729461! >> >> >> >> >> >> >> > >> > >> > -- >> > *Mehmet Burak AYKENAR >> > Graduate Student of Computer Engineering >> > Research Assistant >> > **TOBB ETU Z-10 >> > Microprocessors Laboratory* >> > * >> > mbaykenar.etu.edu.tr >> > mbayke...@etu.edu.tr* >> > >> >> >> -- >> -- >> // Naderan *Mahmood; >> _______________________________________________ >> 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
