Tapeout Readiness Review: Reports & Metrics

Reports and metrics

Reports & Metrics for Tapeout Readiness Review focuses on tapeout checklist pass rate, late blocker count. The goal is to map symptoms to boundary contracts, owner actions, and regression-proof closure.

The job of a report is to convert tapeout checklist pass rate, late blocker count into a closure decision. One summary number is never enough without baseline, owner, and boundary context.

Metric movement

METRIC GRAPH — tapeout checklist pass rate, late blocker count

integration confidence
  ^
  |                         target
  |                       - - - - - - -
  |                  o post-fix + regression
  |              o
  |         o baseline
  |    o failing run
  +--------------------------------------> closure iteration
    baseline freeze   owner fix   full matrix

Readout:
  - compare results on the same manifest baseline
  - state owner and boundary with every metric movement

Risk distribution

RISK HISTOGRAM — Tapeout Readiness Review

issue count
  |      ***
  |    *******
  |  ***********
  |*************  <- critical tail
  +--------------------> risk severity
   low   medium   high

Debug the high-severity tail first; averages hide escape risk.

• Track tapeout checklist pass rate, late blocker count by domain and owner boundary.

• Store baseline manifest beside every metric snapshot.

• Report both immediate fix result and full regression result.

• Explicitly call out residual risk and ownership.

SoC deep dive

Signoff confidence depends on evidence quality and reproducibility discipline.

Concept diagram

SIGNOFF DECISION FLOW
metrics -> manifest -> waivers -> executive review

Metric graph

OPEN CRITICALS OVER TIME
week1 █████████
week2 █████
week3 ██

Reports and artifacts

• closure dashboard

• signoff manifest

• waiver aging report

• TRR checklist

Mini case study

A near-tapeout risk was caught when manifest mismatch invalidated an apparently green closure report.

Debug branches

• Validate manifest integrity

• Bound waiver risk

• Audit cross-domain owner approvals

Senior review question

Ask: what baseline, owner, and artifact prove this topic is truly closed?

Key takeaways

• State baseline manifest and owner with every closure metric.

• Run cross-domain regression after every top-level fix.

Common pitfalls

• Comparing results across different manifests.

• Unowned issues slipping through review cycles.

• Waiving risks without expiry and validation plan.

Reading integration reports