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Course contents

  • Start Here4
  • UVM Foundations14
  • UVM Phases & Simulation Lifecycle26
    • The Phase System
    • UVM Phases: Build, Connect, Elaborate and Run
    • Objections Deep Dive: Drain Time and Propagation
    • Phase Debugging and End-of-Test Signoff
      • End-of-Test Chain: Extract, Check, Report and Final
      • Phase Domains and Sync
      • Reset Phase and Phase Jump
      • Ordering Bugs and Silent Overrides
      • Objection Triage and Hang Forensics
      • Custom Phases
  • Factory & Configuration15
  • Transaction-Level Modeling (TLM)13
  • UVM Sequences & Stimulus21
  • UVM Agents & Protocol VIP21
  • Environment & Test Classes11
  • Checking & Coverage in UVM21
  • UVM Register Abstraction Layer (RAL)22
  • Advanced UVM in Practice13
  • Debug & Regression10
  • Coding Practice47
  • Verification in Industry Practice10
  • Senior Prep: Architecture, Leadership and Interviews32
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‹UVM Phases & Simulation Lifecycle
  1. Topics
  2. UVM Verification
  3. UVM Phases & Simulation Lifecycle
  4. Phase Debugging and End-of-Test Signoff

Part 2 · Phases & Lifecycle · Intermediate

Phase Debugging and End-of-Test Signoff

How a test signs off after run time, how domains, reset and jump change the schedule, and how to debug ordering bugs and hangs.

  • 6topics
  • 6lessons
On this page

    The previous topic decided when the run phase ends. This one covers everything around that moment: how a test turns counts into one trustworthy verdict, how phase domains and jumps change the schedule, why components sometimes run in the wrong order or not at all, and how to take apart a test that will not end. It finishes with the rarely justified tool of defining your own phase.

    What you will be able to do

    • Name the four post-run phases, their traversal order, and the false-pass sources that slip past them.

    • Explain what a phase domain owns, and what sync and jump really do to the schedule.

    • Choose between a phase jump and a reset-aware run_phase for mid-test reset, and defend it.

    • Find a silent override, a late config set or a same-time-step race from the symptoms.

    • Triage a hang or an instant pass from the objection dump in minutes.

    Where each lesson sits

    Flow: runtime schedule to run time ends, then extract, check, report, final; a dotted arrow from hang triage into the run-time-ends step.
    The schedule (domains, reset, jump) runs until objections clear; then extract, check, report and final sign off. A hang is the case where the arrow into 'run time ends' is never taken.

    Lessons, in order

    Lesson

    What it answers

    End-of-test chain

    Extract, check, report and final, one verdict, and the ways a test passes when it should not.

    Phase domains and sync

    What a domain owns, how sync barriers join two schedules, and when a second domain pays off.

    Reset phase and phase jump

    Mid-test reset two ways: jumping the schedule, or reset-aware components in run_phase.

    Ordering bugs and silent overrides

    Late overrides and config sets, methods that never run, and races inside one time step.

    Objection triage and hang forensics

    Hang, instant pass or early end: the dump, the trace and the fix for each.

    Custom phases

    Defining and inserting your own phase, and why reset-aware run_phase usually wins.

    Related topics

    • Up: UVM Phases

    • Previous topic: Objections and end of test

    PreviousNext: End-of-Test Chain: Extract, Check, Report and Final

    Up next

    Up nextEnd-of-Test Chain: Extract, Check, Report and Final

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    See also

    • The Phase System
    • UVM Phases: Build, Connect, Elaborate and Run
    • Objections Deep Dive: Drain Time and Propagation