im running a flip sim with approximately 20 million particles. its virtually maxing out my 32 gb of ram.

this is a little dissapointing as i was hoping to do some much more complex stuff. any tips on optimising ram usage? or will i not suffer slowdowns if i just let it hit the roof?

or, do people who do big sims have to have a vast stack of ram?

Try the latest Houdini build. The Windows version had some tweaks

Relevant thread-

http://www.sidefx.com/index.php?option=com_forum&Itemid=172&page=viewtopic&t=30531 [sidefx.com]

Use Linux if you can ,I simulate my complex dynamics on the Linux 8)