{
  "status": "rejected",
  "reason": "The exact temporal two-pair QK/PV schedule improved the isolated mainloop by only 0.10% and missed the absolute 220 ms gate.",
  "device": "NVIDIA GB10",
  "compute_capability": "SM121",
  "source_commit": "d1a57a546c3d395b1ffcbeecc66d81db76f3b4b5",
  "candidate": {
    "name": "temporal-pair",
    "description": "Two warp pairs alternate QK/online-softmax and prior-tile PV while preserving private per-warp scores, softmax state, and output accumulators.",
    "production_dispatch": "unchanged"
  },
  "correctness": {
    "compute_sanitizer_errors": 0,
    "short_shape_cases": 13,
    "short_shape_result": "byte-exact",
    "real_block": 24,
    "real_tokens": 37810,
    "real_heads": 56,
    "reference_output_sha256": "4c666c20f5f8f651158a2ced33ccff08f3bada07665c595b99008d171db30574",
    "candidate_output_sha256": "4c666c20f5f8f651158a2ced33ccff08f3bada07665c595b99008d171db30574"
  },
  "ptxas": {
    "baseline": {
      "registers_per_thread": 255,
      "static_spill_stores_bytes": 24,
      "static_spill_loads_bytes": 24
    },
    "candidate": {
      "registers_per_thread": 254,
      "static_spill_stores_bytes": 32,
      "static_spill_loads_bytes": 24
    },
    "dynamic_shared_memory_bytes": 32768
  },
  "timing": {
    "rounds": 5,
    "iterations_per_round": 10,
    "baseline_p50_ms": 245.437279,
    "candidate_p50_ms": 245.198769,
    "speedup_percent": 0.097272,
    "candidate_gate_ms": 220.0,
    "gate_result": "fail"
  },
  "decision": {
    "ncu_followup": "skipped because the latency gate failed",
    "block_integration": "skipped",
    "trajectory_validation": "skipped",
    "runtime_integration": "not attempted",
    "conclusion": "Temporal separation alone does not unlock material INT-QK/FP8-PV overlap in the existing SM89 instruction stream on SM121. Further exact work requires a substantially different mainloop or native Blackwell numerical contract."
  },
  "source_artifacts": [
    "research/sage2_temporal_pair/patches/0001-sm89-temporal-two-pair-qk-pv.patch",
    "benchmarks/gb10-sage2-temporal-pair-short-20260825-p0.json",
    "benchmarks/gb10-sage2-temporal-pair-timing-20260825-p0.json"
  ]
}