Update cudnn-frontend to 1.24.0

[sudhakarsingh27]

Description

Update 3rd party submodule cudnn-frontend to 1.24.0

Fixes # (issue)

Type of change

• Documentation change (change only to the documentation, either a fix or a new content)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Infra/Build change
• Code refactoring

Changes

Please list the changes introduced in this PR:

• Change A
• Change B

Checklist:

• I have read and followed the contributing guidelines
• The functionality is complete
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

[sudhakarsingh27]

/te-ci

[greptile-apps]

Greptile Summary

This PR bumps the 3rdparty/cudnn-frontend submodule from v1.23.0 (fb682ce7) to v1.24.0 (c4a97621). No other source files are modified.

• New in 1.24.0: RoPE is now available as a native cuDNN op (standalone or fused with SDPA; RoPE+SDPA fusion requires cuDNN ≥ 9.24.0), and SDPA backward gains support for hidden dimension d=256 (requires cuDNN ≥ 9.23.0). Both are purely additive — no existing APIs were changed or removed.
• Scope: The change is a single-line submodule pointer update; none of the repo's cuDNN-frontend consumers (fused_attn.cpp, cudnn_utils.cpp, etc.) required modification for compatibility with the new version.

Confidence Score: 5/5

Safe to merge — the change is a single submodule pointer bump with no modifications to any source files.

This is a minimal, well-scoped dependency update. The 1.24.0 release is entirely additive (new RoPE op, wider SDPA backward dimension support), with no API removals or breaking changes. Existing TransformerEngine consumers of cudnn-frontend (fused_attn.cpp, cudnn_utils.cpp) do not require any corresponding changes.

No files require special attention.

Important Files Changed

Filename	Overview
3rdparty/cudnn-frontend	Submodule pointer bumped from v1.23.0 (fb682ce7) to v1.24.0 (c4a97621); adds RoPE cuDNN op and d=256 SDPA backward support — no breaking API changes.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[TransformerEngine main] -->|depends on| B[3rdparty/cudnn-frontend]
    B -->|before: v1.23.0\nfb682ce7| C[Old submodule]
    B -->|after: v1.24.0\nc4a97621| D[New submodule]
    D --> E[New: RoPE cuDNN op\nrequires cuDNN ≥ 9.24.0 for SDPA fusion]
    D --> F[New: SDPA bwd d=256\nrequires cuDNN ≥ 9.23.0]
    D --> G[Existing APIs unchanged]

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_{Reviews (2): Last reviewed commit: "Merge branch 'main' of github.com:NVIDIA..." | Re-trigger Greptile}

[ksivaman]

LGTM