Interview drills

Interview Drills for Integration Milestones focuses on milestone slip rate, integration blocker burn-down. The goal is to map symptoms to boundary contracts, owner actions, and regression-proof closure.

PROMPT
You observe milestone slip rate, integration blocker burn-down in Integration Milestones. Explain root cause and closure plan.

STRONG ANSWER
1. Names baseline manifest and failing boundary.
2. Explains Milestones align RTL freeze, collateral handoff, floorplan lock, and signoff criteria so teams converge instead of iterating blindly.
3. Requests milestone checklist, readiness board, blocker tracker.
4. Proposes minimal reversible fix + full regression scope.

WEAK ANSWER
Suggests broad optimizations or owner blame without baseline and artifact evidence.

Diagram to draw on whiteboard

Milestone ladder

INTEGRATION MILESTONES
M0 contract freeze
M1 IP handoff complete
M2 subsystem bring-up
M3 top-level smoke pass
M4 signoff review

Root-cause tree to narrate

ROOT-CAUSE TREE — Integration Milestones

milestone slip rate, integration blocker burn-down regressed
         |
   same baseline manifest?
      /           \
    no             yes
    |               |
version/collateral  real integration
mismatch            contract break
 /       \            |
inputs    env      isolate domain
drift     drift    and first failure

SoC deep dive

Budget and ownership contracts are technical artifacts, not PM slides.

Concept diagram

HIERARCHY CONTRACT FLOW
partition -> block budget -> owner signoff -> integration checkpoint

Metric graph

BUDGET RISK TREND
open risks ████████
owned fixes ███████
unowned risks ██

Reports and artifacts

• budget delta dashboard

• ownership matrix

• milestone health report

• risk register

Mini case study

A timing overrun was solved only after budget ownership moved from shared to single-threaded.

Debug branches

• Validate contract revision

• Check owner signatures

• Audit milestone readiness

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.

Principal SoC review addendum

Milestones align RTL freeze, collateral handoff, floorplan lock, and signoff criteria so teams converge instead of iterating blindly.

Metric: milestone slip rate, integration blocker burn-down