Hi all, The branch with optimized contact detection has been merged with trunk in bzr3000. According to my last tests and roughly speaking, yade is _3 times faster_ after this commit, but the result will be worst or better depending on the number of particles, the number of threads, the constitutive law used, the velocity of bodies, and a few other things.
If you don't compile yade, you can try the new version by installing or updating the yade-daily package. A few timings are reported on the wiki at https://www.yade-dem.org/wiki/Colliders_performace I would be glad to get feedback on the actual speedup in other simulations. I can imagine possible slowdown in extreme cases, although it is unlikely to happen (if it happens, then tuning the collider's parameters should fix the problem). If you feel like experimenting, you can play with the three parameters of the new collider: verletDist, targetInterv, and minSweepDistFactor. Reports can be very usefull as they will help to decide what is best best default combination for these parameters. I hope we can release a stable version on this basis soon, when it is confirmed that the new collider is bug-free. Best regards. Bruno -- _______________ Bruno Chareyre Associate Professor ENSE³ - Grenoble INP 11, rue des Mathématiques BP 46 38402 St Martin d'Hères, France Tél : +33 4 56 52 86 21 Fax : +33 4 76 82 70 43 ________________
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