Waiver posture trades schedule pressure against silicon risk.
+------------------+----------------+----------------+----------------+
| Approach | Strength | Weakness | Best when |
+------------------+----------------+----------------+----------------+
| Strict | predictable | slower early | new program |
| Balanced | practical | needs rigor | stable teams |
| Aggressive | fast | escape risk | late schedule |
| Re-architect | durable | expensive | recurring failures |
+------------------+----------------+----------------+----------------+Pick the approach based on residual silicon risk, not only schedule pressure.
Policy-only arguments without artifact evidence
Unbounded waivers
INTEGRATION EVIDENCE MATRIX — Tapeout Readiness Review
+-------------------+------------------------+--------------------------+-------------------------+
| Evidence | Tells you | Does not prove | Next action |
+-------------------+------------------------+--------------------------+-------------------------+
| Manifest diff | baseline changed | root cause itself | isolate first delta |
| Domain trace | where behavior diverged| ownership accountability | map to contract owner |
| Signoff dashboard | closure posture | reproducibility quality | verify source artifacts |
| Bring-up logs | software-visible symptom| physical/timing cause | correlate with HW trace |
| Waiver register | accepted residual risk | technical closure | review expiry criteria |
+-------------------+------------------------+--------------------------+-------------------------+Signoff confidence depends on evidence quality and reproducibility discipline.
SIGNOFF DECISION FLOW
metrics -> manifest -> waivers -> executive reviewOPEN CRITICALS OVER TIME
week1 █████████
week2 █████
week3 ██closure dashboard
signoff manifest
waiver aging report
TRR checklist
A near-tapeout risk was caught when manifest mismatch invalidated an apparently green closure report.
Validate manifest integrity
Bound waiver risk
Audit cross-domain owner approvals
Ask: what baseline, owner, and artifact prove this topic is truly closed?
State baseline manifest and owner with every closure metric.
Run cross-domain regression after every top-level fix.
Comparing results across different manifests.
Unowned issues slipping through review cycles.
Waiving risks without expiry and validation plan.
Tapeout readiness is an executive review that validates technical closure, reproducibility, and contingency posture before irreversible handoff.
Metric: tapeout checklist pass rate, late blocker count
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