Hi,yes another of those threads

Im new in Houdini,atracted by Flip solver,wonder if im doing things wrong

I feel Houdini slower than Naiad,not to mention its consume far more memory.

Even the display of particles its slower in Houdini.

I know Houdini its a big 3d app and Naiad its focused on just one thing.

But again seeing examples from the mighty Igor i see he keep using naiad and just translate the sim to Houdini for shading etc.

Wonder if you guys have the same experience or if im just doing things wrong,i even switch the particles from spheres to points,thats speed up things,but not to the level of Naiad.

Never worked with Naiad before so I cant really tell which one is better but Im gonna go with Houdini because its workflow capabillities is very deep integrated into Houdini. You can literally do everything you can, I love how you can manipulate vectors in SOP or how you can setup multiple solvers.

Another thing about displaying particles, when you press D for display settings, and in the Geometry tab when you turn off “display sprites” you will get an instant boost in viewport performance.

For very high FLIP particle counts, changing the particle display type to “Pixel” after disabling sprites as noted above will not only improve performance, but likely the look too as the fluid will look solid.

Nice tip twod, never looked at that.. will look at this when I get home..

Naiad and Houdini are same for me, i was running 92mil particles sim with 17gb of ram, display, playblst everything is fine. Yes use pixel display for particles its faster then points, and look better.
Last few sim i did everything in Houdini.

Hi Igor,

While you are here I was wondering something.. if I may ask..

Do you use the new way of meshing? The VDB technique?

Somehow I am not able to get a nice mesh using the default VDB technique, I still use the particle fluid surface node for this.

Hi johnnycore,

Yes for my flood scene i used VDB meshworkflow, i notice if you have flat surface its little hard to get clean mesh, you need some smooth filtering, but for flood, waterfall stuff mesh was fine.

can someone go over what the best known method for meshing with vdb is?

Do you use vdb from particles and then vdb convert?

thanks

CeeGee
Hi johnnycore,

Yes for my flood scene i used VDB meshworkflow, i notice if you have flat surface its little hard to get clean mesh, you need some smooth filtering, but for flood, waterfall stuff mesh was fine.

I'm meshing a pretty flat surface right now, and I found that using Gaussian (Smooth 1 to 2) instead of Laplacian Flow can yield very smooth surfaces by smoothing out uneven details.

Yes you can use diffrent smooth, depend what you need for your shot.
In this example i used default workflow with Laplacian Flow and work realy nice

https://vimeo.com/62684642 [vimeo.com]

Igor