modelscope / modelscope/DiffSynth-Studio
RuntimeError: cuFFT doesn't support tensor of type: BFloat16
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Description
Hi,
I train ltx-2.3 with deepspeed zero-1, but met:
RuntimeError: cuFFT doesn't support tensor of type: BFloat16
Do you have any suggestions on how to fix this？Thanks!
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Research direction
No source file, traceback, or test is provided. Start by reproducing the ltx-2.3 training setup with DeepSpeed ZeRO-1 and capture the full failing path around the cuFFT call. Done means identifying a confirmed compatibility fix or documenting the affected configuration and limitation.
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Assessment
- Tech stack
- python
- Domain
- machine-learning
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Quiet
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100