Fused_MHA does not support when seq_len = 1024, Dh==72, causal_mask==false
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Module:Plugins
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Description
When I use FMHA_v2, I found it does not support my scenes. So i wonder is there any way to use fmha_v2 except changing model.
Thx a lot.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing the FMHA_v2 case described in the issue: seq_len=1024, Dh=72, and causal_mask=false. Read the TensorRT fused multi-head attention support path to determine why this configuration is rejected and whether the failure is expected. Done means the configuration is supported or the issue clearly documents the required limitation and workaround.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp
- Domain
- machine-learning
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100