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+--- Thread: Inconsistent Results - Same File, Same Machine (/thread-617.html)
Inconsistent Results - Same File, Same Machine - mitchfx - 05-12-2019
I have a fairly complex setup using several birth shapes, Physx Binds, breaks, splines, collisions, etc. If I dial everything in to something that is exactly the results I want, then simply re-cache or save/load the file and preview again...the results are slightly different. This is making it very hard to get an approval from the client or to repeat a setup and expect identical results. Is this a known issue with the PhysX engine or other solvers used in TyFlow? Are there any ways to avoid this? Using the latest beta build 16022 and Max 2019. Thanks.
RE: Inconsistent Results - Same File, Same Machine - tyFlow - 05-12-2019
http://docs.tyflow.com/tyflow_particles/object/particleBindSolver/
RE: Inconsistent Results - Same File, Same Machine - mitchfx - 05-12-2019
(05-12-2019, 05:15 PM)tyFlow Wrote: http://docs.tyflow.com/tyflow_particles/object/particleBindSolver/
Thanks for the reply and link. Very interesting and useful information. I triple checked my flow and I don't have any regular particle bind operators, only PhysX binds. Does this setting impact other parts of TyFlow besides particle binds?
RE: Inconsistent Results - Same File, Same Machine - tyFlow - 05-12-2019
Hmm, if you're getting indeterminism without cloth or particle physics operators, that could be a bug. You can send the scene to support@tyflow.com for me to look at, but I'm out of the country for a week so can't check it for a while. You can also try setting max threads to 1 in the main tyFlow settings to disable multithreading in case it's a threading issue.
RE: Inconsistent Results - Same File, Same Machine - mitchfx - 05-12-2019
(05-12-2019, 09:00 PM)tyFlow Wrote: Hmm, if you're getting indeterminism without cloth or particle physics operators, that could be a bug. You can send the scene to support@tyflow.com for me to look at, but I'm out of the country for a week so can't check it for a while. You can also try setting max threads to 1 in the main tyFlow settings to disable multithreading in case it's a threading issue.
I will strip down this scene and send over a file within the next week. In the meantime it sounds like a single threaded test is worth running as well. I'll let you know if that makes a difference. Enjoy your much deserved vacation Tyson!
RE: Inconsistent Results - Same File, Same Machine - mitchfx - 05-13-2019
(05-12-2019, 09:37 PM)mitchfx Wrote:I just realized my flow does have one Object Bind (Surface) operator in it. Is this also subject to the strict determinism behavior?(05-12-2019, 09:00 PM)tyFlow Wrote: Hmm, if you're getting indeterminism without cloth or particle physics operators, that could be a bug. You can send the scene to support@tyflow.com for me to look at, but I'm out of the country for a week so can't check it for a while. You can also try setting max threads to 1 in the main tyFlow settings to disable multithreading in case it's a threading issue.
I will strip down this scene and send over a file within the next week. In the meantime it sounds like a single threaded test is worth running as well. I'll let you know if that makes a difference. Enjoy your much deserved vacation Tyson!
RE: Inconsistent Results - Same File, Same Machine - tyFlow - 05-14-2019
Object Bind shouldn't be subject to that, no. Try single-threaded mode and let me know your findings. Recently I discovered Find Target might have a threading issue in some circumstances so maybe that is it as well.