[QST] Questions about ex77 blackwell Flash attention
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Description
- Why do we need to include a first batch of padding in example 77? What should the padding size be?
- How does example 77 handle variable sequence length with TMA? I was skimming the code and expected to see some tensormap replace calls but don't see any.
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Research direction
Start with example 77 and trace its first-batch padding and variable-sequence-length handling. Determine the intended padding size and explain how TMA supports the varying lengths, including why no tensormap replace calls appear; the issue is done when both questions are answered clearly.
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Assessment
- Tech stack
- cpp
- Domain
- machine-learning, performance
- Issue type
- Documentation
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100