PhysX Fluid Simulation in Softimage ICE
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PhysX Fluid Simulation
This ICE compound wraps a CUDA implentation of the SPH fluid algorithm and allows
a very fast particle simulation of fluids on NVidia GPUs. CPU mode is also available,
also rather fast and not limited by the available GPU RAM.
CPU mode can be used as the default mode or as a fallback mode.
See the si-community thread linked below for details and tips on using this compound. Here's a test video by Tekano with 2 million particles.
local backup: Waterfall_FX.rar
See the si-community thread linked below for details and tips on using this compound. Here's a test video by Tekano with 2 million particles.
local backup: Waterfall_FX.rar
Re: PhysX Fluid Simulation in Softimage ICE
>>GTX 590 crash nvidia driver with this node also
decrease Max Particles Count, 590 is using only 1.5 gb videoram
decrease Max Particles Count, 590 is using only 1.5 gb videoram
Re: PhysX Fluid Simulation in Softimage ICE
Ya, I know it. But we both know it's not your fault, heh? Can you help all those people with issues that they have?Mr.Core wrote:>>GTX 590 crash nvidia driver with this node also
decrease Max Particles Count, 590 is using only 1.5 gb videoram
Does anyone ever ask yourself if all that speed with PhysX and all GPU stuff works so great why it's not implemented in package already? Bad and lazy programmers at Autodesk? I don't think so
Re: PhysX Fluid Simulation in Softimage ICE
If you know it and you also cannot help - at least dont flood here ;) It is best what you can do, believe me
Re: PhysX Fluid Simulation in Softimage ICE
I'm not a "flooding" here, just answering your question. Why so many people have problems with it. The answer is right here You just don't want to hear itMr.Core wrote:If you know it and you also cannot help - at least dont flood here ;) It is best what you can do, believe me
Re: PhysX Fluid Simulation in Softimage ICE
I'll give you a hint - it was not a question
- Hirazi Blue
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Re: PhysX Fluid Simulation in Softimage ICE
Please cool down, both of you...
Stay safe, sane & healthy!
Re: PhysX Fluid Simulation in Softimage ICE
Don't want to further ignite any ill feelings, but I can guess what iamVFX is hinting at - in that this version of physX SPH on the GPU is very unstable. Is that Nvidia's responsibility? who knows?, but I also don't think that Mr.Core is suggesting that this is a production grade replacement, its something to play with and as its so quick some of us expressed an interest and I'm very glad that he shared it with us.
Still , whilst working out the limitations am getting crashes , error code 3, display driver problems, gpu pipe failures , This is certainly not Mr Cores fault but im getting MUCH faster results than if I was waiting purely on the CPU with the old SPH. yes this CPU only version of SPH is still faster than Thiago's but its also not as stable or integrated into SI . eg I cannot seem to add or delete particles or use age etc without the solver failing. So yes, this in no way can replace what we have already but for simple stuff once being aware of your particular GPU limits, it could become a quicker tool in the arsenal heres a quick test with 1 million particles
Still , whilst working out the limitations am getting crashes , error code 3, display driver problems, gpu pipe failures , This is certainly not Mr Cores fault but im getting MUCH faster results than if I was waiting purely on the CPU with the old SPH. yes this CPU only version of SPH is still faster than Thiago's but its also not as stable or integrated into SI . eg I cannot seem to add or delete particles or use age etc without the solver failing. So yes, this in no way can replace what we have already but for simple stuff once being aware of your particular GPU limits, it could become a quicker tool in the arsenal heres a quick test with 1 million particles
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Re: PhysX Fluid Simulation in Softimage ICE
That looks quite impressive. What were the simulation times? And what would they have been with the Lagoa solver?
Re: PhysX Fluid Simulation in Softimage ICE
Hi Chris_TC simulation times are at the bottom of the screen, between 0.5 <> 1 fps as you can see I can orbit around whilst capturing etc. Lagoa, for 1 million particles at low settings, I'm not sure but are probably hundreds of times slower.. will have to check out with exactly the same sim.
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- Hirazi Blue
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Re: PhysX Fluid Simulation in Softimage ICE
And while you're at it, you might want to compare it to the old ICE-SPH addon Thiago Costa wrote (the one that involved its own closed testing Google group). Comparing this PhysX stuff to Lagoa almost seems unfair, as Lagoa tries very hard at being/doing too much IMHO. In that light the old ICE-SPH addon (still available @ rray.de) seems to be a fairer comparison...
;)
;)
Stay safe, sane & healthy!
Re: PhysX Fluid Simulation in Softimage ICE
>>Is that Nvidia's responsibility?
Not Nvidia, more like that it is simage fault, because physx can handle videomemory overflow and automatically switch to the CPU mode.
>> cannot seem to add or delete particles or use age etc without the solver failing.
It is my limitation, I will finish these features after implosia's release and it must be the same stable as built-in particle simulation node:)
Also I have notices that crash is happens in case when we add a huge number of particles at once, if we add the same number during some time - all work fine, seems like that crash is related to some kind of overlapping. In this way I was able to add about 2 millions on my gtx480 1.5gb.
Very nice test btw!
Not Nvidia, more like that it is simage fault, because physx can handle videomemory overflow and automatically switch to the CPU mode.
>> cannot seem to add or delete particles or use age etc without the solver failing.
It is my limitation, I will finish these features after implosia's release and it must be the same stable as built-in particle simulation node:)
Also I have notices that crash is happens in case when we add a huge number of particles at once, if we add the same number during some time - all work fine, seems like that crash is related to some kind of overlapping. In this way I was able to add about 2 millions on my gtx480 1.5gb.
Very nice test btw!
Re: PhysX Fluid Simulation in Softimage ICE
ok think I reached 2 million now by introducing slowly. . rendered with Fury2 so thats GPU rendering ontop of the GPU simulation. works out about 3 seconds per frame. 500 frames rendered in 10 minutes.
Interesting fact discovered to turn on CPU rendering mode is to set the max allowed particles to more than your card can cope, it then does give a n ice message to successfully kick in CPU mode for allowing more particles in the simulation.
Interesting fact discovered to turn on CPU rendering mode is to set the max allowed particles to more than your card can cope, it then does give a n ice message to successfully kick in CPU mode for allowing more particles in the simulation.
Gossip is what no one claims to like, but everybody enjoys.
Re: PhysX Fluid Simulation in Softimage ICE
Tekano,
In this last video the scale of the liquid tank seems to be several meters in length and the simulation looks believable. Can you please do a test at lower scales? Like a glass of water or a bucket. I'm curios how's holding up on this practical example.
In this last video the scale of the liquid tank seems to be several meters in length and the simulation looks believable. Can you please do a test at lower scales? Like a glass of water or a bucket. I'm curios how's holding up on this practical example.
The society that separates its scholars from its warriors will have its thinking done by cowards and its fighting done by fools.
-Thucydides
-Thucydides
Re: PhysX Fluid Simulation in Softimage ICE
here you go, its just a matter of setting the gravity x10 so instead of meters its cm and fiddling with the stiffness & viscosity until it moves ok.
Gossip is what no one claims to like, but everybody enjoys.
Re: PhysX Fluid Simulation in Softimage ICE
First of all thanks for the simulation!
Now are you sure that modifying the gravity is a good idea? I know that in 3d you tweak the values until it looks right even though the values are not by far the physical correct ones...
Anyway, it looks alright but not that good when compared to the larger one. The liquid pouring from the glass should go straight down IMO. Just an idea.
Too bad I can't play with this right now, but it's good to be on the forums most of the time. ;)
Now are you sure that modifying the gravity is a good idea? I know that in 3d you tweak the values until it looks right even though the values are not by far the physical correct ones...
Anyway, it looks alright but not that good when compared to the larger one. The liquid pouring from the glass should go straight down IMO. Just an idea.
Too bad I can't play with this right now, but it's good to be on the forums most of the time. ;)
The society that separates its scholars from its warriors will have its thinking done by cowards and its fighting done by fools.
-Thucydides
-Thucydides
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