RISC-V Design · All levels
Five-Stage Pipeline Partitioning and Timing Contracts: Silicon PPA Impact
Silicon PPA Impact for Five-Stage Pipeline Partitioning and Timing Contracts.
Silicon PPA impact
Silicon PPA Impact for Five-Stage Pipeline Partitioning and Timing Contracts is anchored on Post-layout Fmax versus stage slack spread, plus bubble rate introduced by stage-boundary timing fixes.. Convert observations into mechanism-backed decisions with explicit ownership.
Frequency gains that increase bubbles may lose net throughput.
Area growth from extension logic must justify workload value.
Power and thermal stability are release gates, not secondary metrics.
PPA trend view
diagram
BEFORE / AFTER TREND - Five-Stage Pipeline Partitioning and Timing Contracts
Post-layout Fmax versus stage slack spread, plus bubble rate introduced by stage-boundary timing fixes.
^
| o target band
| o after fix + reruns
| o
| o baseline (failing)
+--------------------------------------------------> iteration
capture issue isolate mechanism close + monitor
Use this view to confirm the gain is causal and stable across seeds.