Solitude Posted March 17, 2010 Share Posted March 17, 2010 (edited) ---Edit: Going to just use this as a place holder for links to videos --- http://www.fx-td.com/content/misc/boatwake.mp4 http://www.fx-td.com/content/misc/flood_corner.mov http://www.fx-td.com/content/misc/morefluids.mp4 http://www.fx-td.com/content/misc/morefluids_particles.mp4 http://www.fx-td.com/content/misc/voxelfluids.mp4 http://www.fx-td.com/content/misc/voxelwake.mp4 --Edit: New Links -- Wolf_Cub_One: http://forums.odforce.net/index.php?app=core&module=attach§ion=attach&attach_id=9978 Edited August 12, 2010 by Solitude Quote Link to comment Share on other sites More sharing options...
mightcouldb1 Posted March 17, 2010 Share Posted March 17, 2010 Nice tests. Keep posting Quote Link to comment Share on other sites More sharing options...
wolf_cub_one Posted March 18, 2010 Share Posted March 18, 2010 Hey Solitude, Very nice. What are the mesh resolution amd sim time for each and what are your computer specs? cheers Quote Link to comment Share on other sites More sharing options...
Solitude Posted March 19, 2010 Author Share Posted March 19, 2010 Hey Solitude, Very nice. What are the mesh resolution amd sim time for each and what are your computer specs? cheers I think all the sim (minus the ripple solver which was like a minute) times were overnight about 7 to 9 hours or so. They were all swapping to disk like crazy before that point as well. I have a quad core amd 9850 with only 4 gigs of ram, so I could push these harder (and will eventually) on a workstation at work when I get a chance. ...running Ubuntu 9.04 x64 voxelfluids.mp4 -- Grid res was: 200 (max axis) at 23x7.6x 8 voxelwake.mp4 -- Grid res was: 175(max axis) at 15x5x8 floodcorner -- Grid res was 150 at 6x2.3x5 (this one ran in 6 hours on my 3 gig of ram laptop. Ummm the particles I can't remember how many particles I got up to.(delete the caches). Maybe 100k? also about 9-10 hours of sim time. The meshing is fast though! Quote Link to comment Share on other sites More sharing options...
wolf_cub_one Posted March 19, 2010 Share Posted March 19, 2010 Hey Ian, Thanks for the info. Your results pretty much matches mine. I was hoping that you were getting faster results so that I could get some speedup tips from you. Oh well... thanks Quote Link to comment Share on other sites More sharing options...
Solitude Posted March 19, 2010 Author Share Posted March 19, 2010 Hey Ian, Thanks for the info. Your results pretty much matches mine. I was hoping that you were getting faster results so that I could get some speedup tips from you. Oh well... thanks No prob... that's good to know too. I have actually redone my virtual memory at home (it was really limited before), so I think I could push more detail still without it freezing, of course at the cost of speed. I really need to try it on the machine I'm on right now (at work)... have lots of ram to spare (32 gigs!), but I sure do wish the proc. was faster (and it's a dual quad xeon). Quote Link to comment Share on other sites More sharing options...
wolf_cub_one Posted March 20, 2010 Share Posted March 20, 2010 floodcorner -- Grid res was 150 at 6x2.3x5 (this one ran in 6 hours on my 3 gig of ram laptop. Hey Ian, What are the specs on your laptop? I tried to replicated your flood scene to get a better speed comparison using the same dimensions and resolution. It took 2 hours to sim 100 frames. My computer: intel Q6600, 8 gigs ram, ubuntu 9.10 64-bit. cheers small_flood.mov Quote Link to comment Share on other sites More sharing options...
Solitude Posted March 20, 2010 Author Share Posted March 20, 2010 (edited) Hey Ian, What are the specs on your laptop? I tried to replicated your flood scene to get a better speed comparison using the same dimensions and resolution. It took 2 hours to sim 100 frames. My computer: intel Q6600, 8 gigs ram, ubuntu 9.10 64-bit. cheers Nice! 2 hours isn't bad at all! ...and it looks almost identical I'll try rerunning that on this machine and see what happens. My laptop is only a dual core... not a workstation-style proc, and it also has vista on it (ewwwww) Edit: Tried on this computer too, couldn't come close to 2 hours. I didn't let it finish, but i was at 4 hours and it wasn't done. So maybe 5 or so..? What do you set your autodopnetwork's ram usage to? I have to put mine below 4gigs, so it starts running out of memory pretty quickly.. I'm guessing this is still the main thing holding me back. I'll run it at work tomorrow and see what I get. Edited March 21, 2010 by Solitude Quote Link to comment Share on other sites More sharing options...
wolf_cub_one Posted March 21, 2010 Share Posted March 21, 2010 Edit: Tried on this computer too, couldn't come close to 2 hours. I didn't let it finish, but i was at 4 hours and it wasn't done. So maybe 5 or so..? What do you set your autodopnetwork's ram usage to? I have to put mine below 4gigs, so it starts running out of memory pretty quickly.. I'm guessing this is still the main thing holding me back. I'll run it at work tomorrow and see what I get. Hey Ian, Sorry if I am misunderstanding you, but I left everything at default. Usually, if you know the sim will run into memory allocation issues, I think you should have it low or just uncheck the Cache Simulation option altogether. Our systems are similar except for ram which is obviously causing the huge difference in time. Your times should be better with the work computers. Please post your results. I'm sure this info will help others too. cheers Quote Link to comment Share on other sites More sharing options...
Solitude Posted March 22, 2010 Author Share Posted March 22, 2010 Hey Ian, Sorry if I am misunderstanding you, but I left everything at default. Usually, if you know the sim will run into memory allocation issues, I think you should have it low or just uncheck the Cache Simulation option altogether. Our systems are similar except for ram which is obviously causing the huge difference in time. Your times should be better with the work computers. Please post your results. I'm sure this info will help others too. cheers Wouldn't unchecking cache simulation make it work only off the HD or does that mean it only keeps exactly what is needed in memory, whilst dumping everything else to disk? I'm a little confused as to how this completely works, and it mentions in the docs that some sims actually need cache sim on to work properly... Quote Link to comment Share on other sites More sharing options...
wolf_cub_one Posted March 22, 2010 Share Posted March 22, 2010 Wouldn't unchecking cache simulation make it work only off the HD or does that mean it only keeps exactly what is needed in memory, whilst dumping everything else to disk? I'm a little confused as to how this completely works, and it mentions in the docs that some sims actually need cache sim on to work properly... Hey Ian, From what I understand, the cache is only for playing the sim in the viewport. When you are writing the sim to disk, you either want the cache low or turn off the caching to get a low memory footprint so it only keeps what it needs. The docs does say that some sim need it on to work so it is confusing, but I have it on at default which is only 500 MB. Hopefully, some one else can clarify it, but that is how I think it works. cheers Quote Link to comment Share on other sites More sharing options...
Solitude Posted March 22, 2010 Author Share Posted March 22, 2010 Hey Ian, From what I understand, the cache is only for playing the sim in the viewport. When you are writing the sim to disk, you either want the cache low or turn off the caching to get a low memory footprint so it only keeps what it needs. The docs does say that some sim need it on to work so it is confusing, but I have it on at default which is only 500 MB. Hopefully, some one else can clarify it, but that is how I think it works. cheers What you said seems to make sense, it's about what I kind of gathered as well -- I'll just turn down the cache amount, and see how it goes. Quote Link to comment Share on other sites More sharing options...
Solitude Posted March 23, 2010 Author Share Posted March 23, 2010 What you said seems to make sense, it's about what I kind of gathered as well -- I'll just turn down the cache amount, and see how it goes. So I tried on my work machine, and it was looking like it'd finish right about 2 hours (stopped it a bit early).. it only seemed to use on average about 30% of my proc power which is kind of depressing when there is so much more proc (eight cores) to use. I'm guessing there is still a good bit of stuff in there that isn't very multithreaded, and so it suffers quite a bit from that. I didn't even go over 2 gigs of ram by the looks of it too, I changed the cache size tried resimming, and didn't notice any speed difference (though I'm sure I would have at home)... Quote Link to comment Share on other sites More sharing options...
wolf_cub_one Posted March 23, 2010 Share Posted March 23, 2010 So I tried on my work machine, and it was looking like it'd finish right about 2 hours (stopped it a bit early).. it only seemed to use on average about 30% of my proc power which is kind of depressing when there is so much more proc (eight cores) to use. I'm guessing there is still a good bit of stuff in there that isn't very multithreaded, and so it suffers quite a bit from that. I didn't even go over 2 gigs of ram by the looks of it too, I changed the cache size tried resimming, and didn't notice any speed difference (though I'm sure I would have at home)... Hey Ian, It does seem that it suffers from some things not being multithreaded. What surprise me about your result is that I would still think that your sim time would be a lot faster since you are using a machine with 8 cores compared to my old quad core. Like everyone else, I hope the speed issue will be address in the next version. Also, are you thinking about testing HQueue? cheers Quote Link to comment Share on other sites More sharing options...
Solitude Posted March 23, 2010 Author Share Posted March 23, 2010 (edited) Hey Ian, It does seem that it suffers from some things not being multithreaded. What surprise me about your result is that I would still think that your sim time would be a lot faster since you are using a machine with 8 cores compared to my old quad core. Like everyone else, I hope the speed issue will be address in the next version. Also, are you thinking about testing HQueue? cheers I would love to, but I don't have a commercial license... only have HD at home, and just apprentice here at work for what little spare time I have, trying to learn Houdini Regardless, I wouldn't think that I should even have to for something like HQueue just to do what should be possible on this machine by itself -- however... using 100% of this plus 7 other machines would be awesome to try. Next, I'm guessing I could try and increase the grid detail to see what I can push on this machine.. Edited March 24, 2010 by Solitude Quote Link to comment Share on other sites More sharing options...
edward Posted March 24, 2010 Share Posted March 24, 2010 I would love to, but I don't have a commercial license... FYI, Apprentice users can still use HQueue for the cloud (currently in beta). The rendering limitations are the same as your own license. Quote Link to comment Share on other sites More sharing options...
Solitude Posted March 24, 2010 Author Share Posted March 24, 2010 (edited) FYI, Apprentice users can still use HQueue for the cloud (currently in beta). The rendering limitations are the same as your own license. Yes, but not for simulations as I understand it...? ...distributed simulations, rather. is it possible to do single simulations as a sort of batch job / script job, then download the data for it? ...though, then I'd just do it on my work machine anyway. Edited March 24, 2010 by Solitude Quote Link to comment Share on other sites More sharing options...
Solitude Posted August 8, 2010 Author Share Posted August 8, 2010 Just adding another test... this one is the new Flip Solver... I do have a test going now, with realflow5's grid solver, which is insanely fast in comparison, but isn't giving me as nice of a motion as Houdini quite yet. Quote Link to comment Share on other sites More sharing options...
wolf_cub_one Posted August 9, 2010 Share Posted August 9, 2010 Just adding another test... this one is the new Flip Solver... I do have a test going now, with realflow5's grid solver, which is insanely fast in comparison, but isn't giving me as nice of a motion as Houdini quite yet. Good early test. I haven't played with H11, but I was hoping it was as fast as realflow 5. I have one more free week left so maybe I'll try to replicate your scene and see if I can get faster results. Oh, nice demo reel. cheers Quote Link to comment Share on other sites More sharing options...
Ratman Posted August 9, 2010 Share Posted August 9, 2010 Good early test. I haven't played with H11, but I was hoping it was as fast as realflow 5. I have one more free week left so maybe I'll try to replicate your scene and see if I can get faster results. Oh, nice demo reel. cheers I got a feeling Solitude will feel different once he properly runs a sim (looks over at Solitude) :-| Quote Link to comment Share on other sites More sharing options...
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