RISC-V Design · All levels
Extension Compatibility Policy: Silicon PPA Impact
Silicon PPA Impact for Extension Compatibility Policy.
Silicon PPA impact
Silicon PPA Impact for Extension Compatibility Policy is anchored on Software portability rate across SKUs and zero-regression compliance against declared ISA profiles.. 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 - Extension Compatibility Policy
Software portability rate across SKUs and zero-regression compliance against declared ISA profiles.
^
| 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.