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+--- Thread: Cannot use GPU (/thread-3459.html)
Cannot use GPU - dv2000 - 02-02-2023
Hi,
I have the latest Studio Drivers for nvidia and 4090 and TY Flow still says no CUDA.
I have to use Studio drivers because octane is more stable.
How do I turn it on?
THanks
RE: Cannot use GPU - tyFlow - 02-02-2023
Did you install the tyFlow CUDA DLLs on the tyFlow download page? Make sure you have the latest ones...
RE: Cannot use GPU - dv2000 - 02-02-2023
(02-02-2023, 04:41 PM)tyFlow Wrote: Did you install the tyFlow CUDA DLLs on the tyFlow download page? Make sure you have the latest ones...
Thank you! And should I leave multi threading and CUDA both on or just CUDA? Or TYFLOW auto chooses the best method?
RE: Cannot use GPU - tyFlow - 02-02-2023
PhysX CUDA uses a different method of solving constraints than PhysX CPU....whereas PhysX multi-threading should yield the same result as PhysX single-threading...so whether or not to use PhysX CUDA depends on a case-by-case basis, if it's producing acceptable results. It's the only black-box solver in tyFlow (black-box meaning I don't have access to the source code, because NVidia hasn't released it). All other GPU/CUDA solvers in tyFlow should produce the same results as their non-GPU counterparts...so it's safe to always use them in all situations.
RE: Cannot use GPU - dv2000 - 02-02-2023
(02-02-2023, 05:14 PM)tyFlow Wrote: PhysX CUDA uses a different method of solving constraints than PhysX CPU....whereas PhysX multi-threading should yield the same result as PhysX single-threading...so whether or not to use PhysX CUDA depends on a case-by-case basis, if it's producing acceptable results. It's the only black-box solver in tyFlow (black-box meaning I don't have access to the source code, because NVidia hasn't released it). All other GPU/CUDA solvers in tyFlow should produce the same results as their non-GPU counterparts...so it's safe to always use them in all situations.
Thanks. I think there is a bug when cuda is checked time slider gets very slow even though Birth doesn't start since 220 frame. Tyflow must be completely turned off