On 12/03/15 16:25, Roman Haefeli wrote: > I've been using Pd and having netpd sessions on my 8 year old Laptop > happily ever since. Recently, I was doing a session on my much newer (1 > year old) work computer and I was hitting the CPU limit much quicker > than I'd expected. I booted my old laptop and loaded the session there > and the Pd load on a core was around 55%. The old laptop has Core 2 Duo > T8300 (2.4GHz) CPU, the newer one a i5-3427U (1.8GHz) CPU.
i would suspect, that the 'dynamic overclocking' of the i5 was not working for some reason, so that the cpu was actually running at 1.8 ghz. in my experience pd's cpu-load is more or less proportional to the cpu-frequency, though modern cpus might be a little more efficient at the same frequency (about 10 percent). > A thing I'm wondering about is that a CPU benchmarking > website [1] lists for the i5-3427U a single thread rating of 1435 and > for the T8300 a rating of 934. So, according to this benchmark, the > newer model is supposed to be faster, even when running single-threaded > applications. i believe what matters most for pd is the singlethreaded floatingpoint performance. > What happened to the "newer = faster" rule? it looks like history is more or less over, concerning x86 singlethread performance. i have just found this: http://preshing.com/20120208/a-look-back-at-single-threaded-cpu-performance/ bis denn! martin _______________________________________________ Pd-list@lists.iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list