IBM and Cadence authors report wreal modeling and digital mixed-signal regressions on an IBM project
A DVCon 2013 paper by IBM and Cadence authors reports that IBM created and deployed Verilog-AMS wreal models on a mixed-signal project. The authors describe correlation against circuit-level simulations, approximately 40x simulation speedup for a representative case, and digital mixed-signal regressions that could run overnight.
Evidence
Real Number Modeling ↗
DVCon's record identifies IBM and Cadence authors for the real-number-modeling methodology paper.
Real Number Modeling — paper ↗
The paper describes IBM's wreal model development, correlation, reported speed comparison, and overnight regression use.