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b200_diffusion_residual_gate_add__multi_shape: fused CUDA kernel (~2.19x vs eager, 67/67 correct) - #134

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kda/k19_b200_diffusion_residual_gate_add__multi_shape-20260625-083922-58057

Jun 25, 2026

Merged

b200_diffusion_residual_gate_add__multi_shape: fused CUDA kernel (~2.19x vs eager, 67/67 correct)#134
BBuf merged 12 commits into
mainfrom
kda/k19_b200_diffusion_residual_gate_add__multi_shape-20260625-083922-58057

Commits on Jun 25, 2026
- residual_gate_add: recover baseline lineage + author correctness-first scaffold
  
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- residual_gate_add: fix ABI validation contract + symmetric rejection (R1)
  
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- residual_gate_add: reject non-contiguous full-shape gate; lineage/marker cleanup (R2)
  
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- residual_gate_add: add fail-closed pinned-GPU benchmark guard (R2)
  
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- residual_gate_add: remote B200 gate PASS — correctness 56/56, geomean 2.199x (R2)
  
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- residual_gate_add: AC-4 zero/sign+repeat coverage, NCU/roofline, docs/results.md (R3)
  
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- residual_gate_add: remove AC- markers from code; fix benchmark_method doc drift (R4)
  
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- residual_gate_add: unify final evidence on one pinned GPU 7 (R4, AC-6)
  
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- residual_gate_add: address Codex review P2/P3 (device order + 4D out rank) (R5)
  
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- residual_gate_add: lazy candidate build + document batch-1 contract (R6)
  
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- residual_gate_add: guard kernel launches to the input tensors' device (R7)
  
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- benchmark: select CUDA device before collecting provenance (R8)
  
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Commits

Commits on Jun 25, 2026