Zack Anderson

I have a scene where I'm caching a vellum grains simulation to a disk cache. I'm having trouble understanding why it takes so long. When I cache the simulation to ram in the viewport each frame takes about 15 seconds, however when I drop a File Cache SOP and save it to my hard drive each frame seems to take about 3 minutes. Could someone explain why this may be? I have tried saving to another drive and it didn't help.

I'm pretty new to the flip fluids in Houdini. I'm trying to create the surface geometry for my fluid but notice that it seems to be connecting particles that are separated by a collision object. I do notice that there is a setting labeled "subtract collision volumes" under the regions tab, but it appears to do absolutely nothing no matter what I do with the settings. I would also prefer if the collision wasn't just boolean'd out, id much prefer if it didn't look like there was any surface tension between particles on one side of the collision.

wow! thank you so much, I'm going to give it a try when I get home later.