I'm trying to create a large number of POP networks, each using unique source geometry. I gave it a try using the ForEach SOP to create sweep geometry using a passed-in curve and use this geometry as a POP source. In my experiment (attached) only the particles at grid point 0 flow freely. The particles at 99 also flow a bit. All of the other POPs are generating particles but after a brief surge on frame 1 they stop.
I simplified it by just creating a POP in the ForEach, but the source at grid point 0 didn't generate particles.
I'm using Houdini 11.0.504 on 64-bit Ubuntu 10.04.
I'll submit a bug if someone can reproduce it.
If there is a workaround or a different approach please let me know.