dynamoanders Posted December 9, 2011 Share Posted December 9, 2011 Hi all. I´m doing some fluid tests with a friend at work. He´s doing it in Real Flow 2012, and I´m doing it in Houdini 11 with the flip solver. We have the same scene, scene scale and are doing some comparisions on how they behave, how fast the sims are, what´s the benefits etc. Just for fun and compare the workflow and to see what good for what. There are some issues, but in general the workflow is the same. I haven´t been changing any collision issues, so it´s just default settings and needs to be cranked up. River RnD. My link Houdini 536 frames, 4.95 million particles, 12.5 hours until Houdini crashed (but I had a lot of other apps going). It is getting interesting around frame 300 in the bottom of the river.. Real Flow Real flow did it in 30 min! But that was with a different solver and fewer particles (1 million). Wheel RnD. My link Houdini 200 frames, 950 000 particles, 30 min Real Flow 200 frames, ca 1 million particles, 1 hour I will post renders and link to Real Flow sims soon Quote Link to comment Share on other sites More sharing options...
symek Posted December 9, 2011 Share Posted December 9, 2011 (edited) Since you're comparing with Realflow 2012, it would be fair to wait for Houdini 2012, which is Houdini 12 . As a 12-years-old application Houdini caries some heavy weight of legacy code, which hampers its duties relaying on parallel CPUs. H12 thankfully will overcome this limitation, thus this ridiculous improvements you may have heard about. Wait for H12 to render your opinion. Edited December 9, 2011 by SYmek Quote Link to comment Share on other sites More sharing options...
moondeer Posted December 10, 2011 Share Posted December 10, 2011 (edited) i love houdini, have been intrigued by realflow, but for water, all my attention is lately on naiad by exotic matter. a trial mac version is expected in the next week, and cmivfx has a comprehensive lesson already posted... the naiad node based system looks very very similar to houdini's, so i have hopes that its learning curve will be manageable for me. furthermore, there is already posted workflow enhancements between naiad and houdini. this should be interesting... vimeo "shark night" http://vimeo.com/channels/naiad#29443942 case study - shark night http://www.exoticmatter.com/shark-night-3d Edited December 10, 2011 by moondeer Quote Link to comment Share on other sites More sharing options...
ikarus Posted December 15, 2011 Share Posted December 15, 2011 There is speculation that h12 flip solvers will be able to sim at the same rate as naiad (the current version, atleast) in terms of zero-viscosity fluid simulations. Naiad is extremely efficient so it will be interesting to see if h12 will match it's efficiency. imo its a poor use of time to be comparing Realflow 2012, software which has been in development for years specifically for the purpose of fluid particle simulation, to Houdini11's flip solver, a rather hastily put together implementation of flip fluids built with whay SYmek called legacy code, not to mention it was the first real iteration of it. If you want a fair test, compare h11 flip fluids to realflow 1.0 Quote Link to comment Share on other sites More sharing options...
dynamoanders Posted December 16, 2011 Author Share Posted December 16, 2011 Hi guys. Sorry for a late reply. I appretiate your comments, and they are valid thoughts. Basically what I wasn't trying to compare Houdini 11 to Real Flow 2012 in sim time, speed e t c, but I was more testing what it could do and how the fluids (particles) are behaving. What the differences in the sims are, and how the workflow is, (intuitive etc). What I found is that even though the Real Flow is faster, I do like the movement of the Houdini ones right now. I still need to find out what the values are doing more exactly comparisons. #moondeer Here at work, where doing some sims that are reaally close to the shark night ones but in Real Flow, but you have to wait for the movie premier to see it :-) I love Houdini, and I try to use it as much as possible :-). Can't wait until the new H12 is coming out!! Houdini is more than an software, it's a way of thinking ;-). Will update as soon as possible. Quote Link to comment Share on other sites More sharing options...
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