# OpenYieldV2

The open-source SRAM design tool OpenYieldV2 turns bitcell topology from a fixed input into an optimizable variable searched jointly with transistor sizing and threshold-voltage assignment. Previously OpenRAM generated layouts without optimizing, and OpenYield's high-fidelity optimization covered only a fixed 6T cell. OpenYieldV2 compiles 6T and 10T macros under identical high-fidelity conditions, predicts performance with a few-shot TabPFN surrogate, and searches with a coarse-to-refined multi-objective optimizer; in mixed-topology scenarios its hypervolume improves by up to 17.3% over the strongest single-topology baseline.

The open-source SRAM design tool OpenYieldV2 turns bitcell topology from a fixed input into an optimizable variable searched jointly with transistor sizing and threshold-voltage assignment. Previously OpenRAM generated layouts without optimizing, and OpenYield's high-fidelity optimization covered only a fixed 6T cell. OpenYieldV2 compiles 6T and 10T macros under identical high-fidelity conditions, predicts performance with a few-shot TabPFN surrogate, and searches with a coarse-to-refined multi-objective optimizer; in mixed-topology scenarios its hypervolume improves by up to 17.3% over the strongest single-topology baseline.