[PD] pd and multi-core processors
timvets at gmail.com
Wed Apr 7 01:41:54 CEST 2010
2010/4/6 Jon <potaxpotax at gmail.com>
> sorry if i missed the announcement, but where can i find this [pd~]
> object and some documentation?
i think it comes with the latest pd extended, at least i didn't explicitly
install it and i do have it, so...
> On Tue, Apr 6, 2010 at 9:36 PM, Tim Blechmann <tim at klingt.org> wrote:
> >> With my patch open i get these values (average):
> >> cpu1 60% cpu2 60% cpu3 11% cpu4 2%
> >> Then, when I open a pd~ patch:
> >> cpu1 80% cpu2 80% cpu3 40% cpu4 3%
> > the average cpu load won't tell you a lot, since the cpu speed is usually
> > not constant, but may be modulated (adding some latency hotspots). in
> > general, i'd recommend to disable frequency scaling, turbo mode (for
> > cpus) and smt, since it may confuse numbers and can increase the thread
> > wakeup latency significantly, if you want to use a machine for
> > real-time audio applications.
> >> so, still plenty of overhead on the 4th core, but it doesn't seem to be
> >> used.
> > from my understanding, you should split your path into 4 pieces of equal
> > load, using 3 pd~ objects, if you want to optimize it for a quad-core
> > tim
> > --
> > tim at klingt.org
> > http://tim.klingt.org
> > Question: Then what is the purpose of this "experimental" music?
> > Answer: No purposes. Sounds.
> > John Cage
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