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DTSTAMP:20250625T183020Z
LOCATION:3006\, Level 3
DTSTART;TZID=America/Los_Angeles:20250625T133000
DTEND;TZID=America/Los_Angeles:20250625T134500
UID:dac_DAC 2025_sess143_RESEARCH796@linklings.com
SUMMARY:3D-Flow: Flow-based Standard Cell Legalization for 3D ICs
DESCRIPTION:Yuxuan Zhao, Peiyu Liao, and Bei Yu (The Chinese University of
  Hong Kong)\n\nThe standard-cell placement legalization is a critical step
  in the physical design. \nThe emerging 3D ICs have brought challenges to 
 traditional legalizers on efficiency and effectiveness.\nIn this work, we 
 present a fast flow-based legalization algorithm, 3D-Flow, that minimizes 
 cell displacement in a 3D solution space.\nOur legalizer resolves overflow
 ed bins by finding the shortest augmenting path on a 3D grid graph, utiliz
 ing an effective branch-and-bound algorithm.\nMoreover, a post-optimizatio
 n with a cycle-canceling algorithm is proposed to minimize the maximum dis
 placement.\nOur approach leverages the global perspective inherent in netw
 ork flow methods, considering multiple dies in 3D ICs to minimize cell dis
 placement.\nExperimental results on ICCAD 2022 and 2023 contest benchmarks
  demonstrate our proposed algorithm achieves up to 13% and 43% less averag
 e and maximum cell displacement compared to state-of-the-art legalizers in
  a similar runtime.\n\nTopics: EDA\n\nTracks: EDA7: Physical Design and Ve
 rification\n\nSession Chairs: Igor Markov (Synopsys) and David Chinnery (S
 iemens)\n\n
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