On Sat, Apr 11, 2015 at 10:43 AM, Johannes Lorenz <johannes89@mailueberfall.de> wrote:

> But again, I wasn't proposing "one jack client per effect" ... I was
> proposing only a single JACK client per application, and NOT using JACK's
> audio graph capabilities within your application: you would need to compute
> execution order yourself or use a nice library for this (not that there
> necessarily are any nice libraries).

Need to ask once more. Assuming I'll do this - one jack client and zynaddsubfx as a plugin. Nonetheless, if I have 40 instances of zyn, I'd like to (actually must) compute them concurrently. So how to do this with one client?

By using your own internal graph mechanism that has parallel capabilities. See, for excample, https://github.com/flowprogramming/dspatch

The best way I can see is using an array of jack clients, and hoping they'll process() at the same time. However, this sounds very tricky...

There can be very good reasons for using JACK 1. If a user is doing that, you won't get any parallelization at all.