Hi, I have been doing some benchmarks (h.264 decoder from MediaBench2) on a single core system with L1 and L2 caches and varying memory bandwidth in SE mode.
I couldn't make sense of some stats: Run 1: sim_insts 13149912 sim_ticks 7559300000 system.cpu0.cpi_total 0.910270 system.cpu0.numCycles 11969969 Run 2: sim_insts 13146947 sim_ticks 5679495000 system.cpu0.cpi_total 0.854693 system.cpu0.numCycles 11236603 For both runs, I ran the benchmark to completion (sim_insts are almost identical - why not perfectly the same?). The only difference is the memory bus clock speed (run 1 has about 10x less memory bandwidth). The two runs have a very different (>30%) sim_ticks (which I believed was the number of clock cycles from start to end of simulations, thus should be a measure for "total execution time"), but the cpi and numCycles differ much less (<7%). How can this mismatch be explained? Regards, Jonas. -- Dipl.-Ing. Jonas Diemer Institut für Datentechnik und Kommunikationsnetze (Institute of Computer and Communication Network Engineering) Hans-Sommer-Str. 66 D-38106 Braunschweig Germany Telefon: +49 531 391 3752 Telefax: +49 531 391 4587 E-Mail: [EMAIL PROTECTED] Web: http://www.ida.ing.tu-bs.de/ _______________________________________________ m5-users mailing list m5-users@m5sim.org http://m5sim.org/cgi-bin/mailman/listinfo/m5-users
