16 Apr
2002
16 Apr
'02
6:43 p.m.
On Tue, 2002-04-16 at 11:34, Andrew (Andy) W. Schmeder wrote:
Hi all.
I'd like to know how PD uses parallelism to take advantage of SMP systems... i.e. does it use threads to dispatch the work across multiple CPUs?
Not exactly - though the GUI is in a separate process and some of the objects use threads (readsf~). Be aware that there is really no reason to use threads until your cpu usage is at 100 percent. The computational need of the patches is normally constrained by the availability of data from the soundcard. In other words, you can't process audio you don't have yet, so if - for example - you use 25 percent of two cpus you are simply spending longer waiting for audio data.
Karl
-andy
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Karl W. MacMillan
Computer Music Department
Peabody Institute of the Johns Hopkins University karlmac@peabody.jhu.edu
mambo.peabody.jhu.edu/~karlmac
Computer Music Department
Peabody Institute of the Johns Hopkins University karlmac@peabody.jhu.edu
mambo.peabody.jhu.edu/~karlmac