Hi there,
im working on a digital mixing desk, any channel is build of 33 MIDI CCs one CPU has to manage 8 channels for using ctlin with dynamic arguments, i put it in an abstraction, did two multiplications and two compersisons. when i change a CC value the pd-gui is getting REALLY busy, computing about 20 minutes for that one value.
do you have any ideas, on how to do that more CPU saving?
greets chris
Well, if you are trying to display all the values in number boxes at the same time, and the digital mixer is sending them at a very fast rate, then yes Pd will choke on it. The numbers themselves aren't the problem, it's Pd's crappy graphics interface!
The attached abstraction is from the "mapping" library. It's used in the subpatch named [pd display values without pegging the cpu] in the arduino-help.pd patch, so I suppose it should do just that.
It works by resampling the input number stream every so many milliseconds. The creation argument should be the number of milliseconds between each sample. First inlet is the number stream to be resampled, the second inlet is in case you want to change the resampling rate.
Best! Derek
On 8/4/10 2:06 PM, Christoph Kuhr wrote:
Hi there,
im working on a digital mixing desk, any channel is build of 33 MIDI CCs one CPU has to manage 8 channels for using ctlin with dynamic arguments, i put it in an abstraction, did two multiplications and two compersisons. when i change a CC value the pd-gui is getting REALLY busy, computing about 20 minutes for that one value.
do you have any ideas, on how to do that more CPU saving?
to limit the rate of graphical interface, "resample" alone is not a good solution, as it will generate a data at fixed rate even if the input did not change.
you can use "resample" + a "change" object. but this create more latency than using only a "speedlim" object. speedlim can be find on different lib, here is a vanilla version.
anyway, i think solving the problem is more "not generating so many information" than "removing useless information"
c
Le 04/08/2010 14:22, Derek Holzer a écrit :
Well, if you are trying to display all the values in number boxes at the same time, and the digital mixer is sending them at a very fast rate, then yes Pd will choke on it. The numbers themselves aren't the problem, it's Pd's crappy graphics interface!
The attached abstraction is from the "mapping" library. It's used in the subpatch named [pd display values without pegging the cpu] in the arduino-help.pd patch, so I suppose it should do just that.
It works by resampling the input number stream every so many milliseconds. The creation argument should be the number of milliseconds between each sample. First inlet is the number stream to be resampled, the second inlet is in case you want to change the resampling rate.
Best! Derek
On 8/4/10 2:06 PM, Christoph Kuhr wrote:
Hi there,
im working on a digital mixing desk, any channel is build of 33 MIDI CCs one CPU has to manage 8 channels for using ctlin with dynamic arguments, i put it in an abstraction, did two multiplications and two compersisons. when i change a CC value the pd-gui is getting REALLY busy, computing about 20 minutes for that one value.
do you have any ideas, on how to do that more CPU saving?
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hello, what you describe should use a negligible % of CPU. i think there is a problem somewhere. something like a loop with send and receive by example.
send your patch to the list so we can have a look.
c
Le 04/08/2010 14:06, Christoph Kuhr a écrit :
Hi there,
im working on a digital mixing desk, any channel is build of 33 MIDI CCs one CPU has to manage 8 channels for using ctlin with dynamic arguments, i put it in an abstraction, did two multiplications and two compersisons. when i change a CC value the pd-gui is getting REALLY busy, computing about 20 minutes for that one value.
do you have any ideas, on how to do that more CPU saving?
greets chris
Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
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Christoph Kuhr -
cyrille henry -
Derek Holzer