100,000 Particles at 30fps on Quad Core i7
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Uploaded by kotsoft on Aug 16, 2011
I've just gotten a MacBook Pro with 2.0 GHz Quad Core i7. The MPM simulator is scaling very nicely. Video capture slowed it down a bit and I've sped it up to 30fps to show what it's like without it.
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Uploader Comments (kotsoft)
All Comments (30)
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Holy crap, this is incredible! Is this open-source? CS student here!
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@kotsoft ATI Radeon HD5870
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@kotsoft Ok. Really nice implementation, anyway. Have you tried to simulate a drop splash ? The worthington jet is the most difficult thing to simulate for my own solver (SPH one). I'm curious about how MP handles this test case.
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@Rezelmombah i'll release one when i have a bit more features such as different tools and i need some interface to edit material properties and stuff.
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@kotsoft when will you release a demo?
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Really, really nice. What Poisson solver do you use for pressure ? Is it simple Jacobi ? If so, try SOR, it's just a few more lines, but it really improves convergence, and you will have less elastic effect. I had also tried conjugate gradient, but way to complicated (I like simple code ^^), and sometimes troubles at boudary conditions. My experience is that SOR is the most valuable solver for real time simulation.
VelRyphon 6 months ago
@VelRyphon i'm just using a non-iterative pressure. it is already mostly pretty stiff and compressible only when large regions are moving quite a bit faster than the cell size, which normal incompressible free surface simulations have trouble with anyway. also, at 100,000 particles this is a pretty large scale simulation so if the room's a little more irregular with smaller sections and more zoomed in, the fluid will feel pretty incompressible. also, i kind of like the shockwaves.
kotsoft 6 months ago
I've download Polluted Plantet, it runs smoothly on my Phenom II x4 955 3.6 GHz CPU. Very nice
magleman 6 months ago
@magleman hey, could you share percentages for each core? i'm just curious for scaling purposes.
kotsoft 6 months ago
@kotsoft It uses all 4 cores equally, about 70%
magleman 6 months ago
@magleman ok thanks. it seems that either memory or gpu is being a bottleneck. i'm going to be experimenting a little with cache coherency to see if i can get rid of that bottleneck. what gpu do you have?
kotsoft 6 months ago