Add Float64 Oracle Audit and Three Questions Framework to XProf Numerical Parity. - #3338
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…ical Parity.
- Implements `kernel_oracle` in `numerical_validator.py` supporting automatic float64 promotion (`kernel_oracle="auto"`) and explicit float64 analytical callables.
- Adds `OracleAudit` dataclass reporting reference and candidate ULP distances and maximum absolute deviations from the oracle.
- Surfaces `correctness_basis` ("AGREEMENT_AND_ORACLE" vs "AGREEMENT_ONLY") and `run_config` in validation report payloads.
- Introduces `UlpContext` reporting median (`p50`) ULP, 99.9th percentile, and regime reliability flags.
- Implements dual gating with `np.allclose` alongside ULP distance checks.
- Dispatches test regimes based on criterion: Q3 and discrete types execute full procedural distributions; continuous parity defaults to normal regime with automated diagnostic triage fallback.
- Adds `chunk_callable` utility for memory-constrained oracle validation.
- Adds B3 0-ULP false green auto-probe on batch 0.
- Adds pin-inert reference detection probing accelerator precision sensitivity.
- Updates CLI tool `verify_numerical_parity` to accept and serialize `--kernel_oracle` and `--regimes`.
- Synchronizes `numerical_correctness.md` reference documentation and `SKILL.md` across 1P and 3P mirrors.
PiperOrigin-RevId: 975592711
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Add Float64 Oracle Audit and Three Questions Framework to XProf Numerical Parity.
kernel_oracleinnumerical_validator.pysupporting automatic float64 promotion (kernel_oracle="auto") and explicit float64 analytical callables.OracleAuditdataclass reporting reference and candidate ULP distances and maximum absolute deviations from the oracle.correctness_basis("AGREEMENT_AND_ORACLE" vs "AGREEMENT_ONLY") andrun_configin validation report payloads.UlpContextreporting median (p50) ULP, 99.9th percentile, and regime reliability flags.np.allclosealongside ULP distance checks.chunk_callableutility for memory-constrained oracle validation.verify_numerical_parityto accept and serialize--kernel_oracleand--regimes.numerical_correctness.mdreference documentation andSKILL.mdacross 1P and 3P mirrors.