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8c85393ee2
Add a bulk-data SAME path to nvbench_compare for cases where summary intervals do not provide a clear FAST/SLOW decision. The new path compares sample times and SM-clock-adjusted cycles with symmetric nearest-neighbor coverage over unique values and sample counts. The comparison now requires both sample-weight coverage and unique-support coverage to pass before declaring SAME. If bulk data is available but coverage does not pass, the result remains UNDECIDED instead of falling back to the summary-only SAME rule. Also improve undecided diagnostics by aggregating reason codes while preserving the most severe representative detail, including observed coverage values and thresholds for bulk support mismatches. Add tests for: - bulk data confirming SAME despite changed mode weights; - bulk time mismatch overriding summary-only SAME; - cycle coverage vetoing time-only agreement; - sample-weight and unique-support coverage diagnostics; - aggregation of undecided reason details.