Summary
On the 2026-06 upgrade, coralnpu-sky130hd reaches 6_final but is marginally setup-negative (WNS −269 ps, util 23.1 %). asap7 (+123 ps) and nangate45 (+1.00 ns) close clean.
Scope
Marginal; sky130hd's coarse pitch + the new resizer/router leave a small negative slack the flow knobs tried didn't clear. Out of scope without SDC/RTL change. See designs/src/coralnpu/DECISIONS.md (sky130hd). Part of PR #195.
Summary
On the 2026-06 upgrade, coralnpu-sky130hd reaches
6_finalbut is marginally setup-negative (WNS −269 ps, util 23.1 %). asap7 (+123 ps) and nangate45 (+1.00 ns) close clean.Scope
Marginal; sky130hd's coarse pitch + the new resizer/router leave a small negative slack the flow knobs tried didn't clear. Out of scope without SDC/RTL change. See
designs/src/coralnpu/DECISIONS.md(sky130hd). Part of PR #195.