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- W3113270449 abstract "Placement is a critical step for modern very-large-scale integrated (VLSI) design closure. Recently, electrostatics-based analytical placement frameworks (ePlace) demonstrate promising performance in both solution quality and runtime. However, existing ePlace-based placers fail to meet the versatility and robustness requirements on various placement workloads. We propose a versatile and robust placer to solve region-constrained placement problems with better solution quality and faster convergence. We formulate the region-constrained placement problem into a multi-electrostatics system via virtual blockage insertion and field isolation. To achieve robust wirelength minimization with aggressive density constraints, we adopt self-adaptive quadratic density penalty and entropy injection techniques to automatically accelerate and stabilize the nonlinear optimization. Our experiments on ISPD 2015 benchmarks with region constraints demonstrate an average of >13% HPWL improvement and >11% top5 overflow improvement compared with advanced region-aware placers Eh?Placer and NTUplace4dr. Our robustness-boost techniques show an average of ~1% and ~10% improvement in HPWL and runtime compared to DREAMPlace on ICCAD 2014 and ISPD 2019 benchmark suites." @default.
- W3113270449 created "2020-12-21" @default.
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- W3113270449 date "2020-11-02" @default.
- W3113270449 modified "2023-10-17" @default.
- W3113270449 title "DREAMPlace 3.0" @default.
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- W3113270449 doi "https://doi.org/10.1145/3400302.3415691" @default.
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