Discovery, measurement, HNEP, SCF, remarks, and cheap dispatch — correctness before performance.
CPUID + knowledge packs
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fingerprint class
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tournaments (correctness · regression · stability)
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.hnep
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runtime select ──mismatch──► baseline
Knowledge packs validate public architecture facts. HNEP files store measured winners for one fingerprint class. They are different artifacts.
| Approach | Silicera angle |
|---|---|
| PGO / BOLT | Variant winners bound to fingerprint class |
-march=native | Portable artifact; bind at profile load |
| Autotuners | Mismatch fails safe; confidence levels |
| Multiversioning | Working-set vs cache geometry trees |