Proxy Objectives
Prior partitioning methods usually optimize proxy goals rather than final PPA metrics. Open3DBench optimizes a fixed weighted combination of cross-tier cut size and inter-tier area utilization imbalance. Better proxy values do not reliably…
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Prior partitioning methods usually optimize proxy goals rather than final PPA metrics. Open3DBench optimizes a fixed weighted combination of cross-tier cut size and inter-tier area utilization imbalance. Better proxy values do not reliably imply better final PPA. A strict proxy Pareto frontier can discard candidates that later have superior backend PPA. Proxy-driven methods have an unclear mapping between desired final PPA preferences and proxy weights.