[Bf-committers] SPH stability and multithreading patches

[Alex Fraser]

Hi all (and att. Janne),

I have submitted two patches to the tracker:

[#29661] Stability bug fixes for SPH particle physics
http://projects.blender.org/tracker/index.php?func=detail&aid=29661&group_id=9&atid=127

Makes simulations more stable, symmetric and reproducible.

[#29663] Multithreading for SPH solver
http://projects.blender.org/tracker/index.php?func=detail&aid=29663&group_id=9&atid=127

Makes the collision and SPH integration multithreaded. In my tests it gives up to a 4.4x speed-up on 4 cores (with Hyperthreading). Consecutive runs give the same results (i.e. the particles end up in the same locations). This patch builds on the stability patch above.

Any feedback would be welcome!

Alex

-- 
Alex Fraser
Software Engineer
VPAC Ltd