Title :
On controlling perturbation due to repeaters during quadratic placement
Author :
Saxena, Prashant
Author_Institution :
Intel Corp., Hillsboro, OR
Abstract :
Recent studies have shown that scaling causes the number of repeaters to grow rapidly. The author demonstrates that this growth leads to massive placement perturbations that break the convergence of today´s interleaved placement and repeater-insertion flows. The author then presents two new force models for repeaters targeted towards quadratic placement algorithms. Finally, experiments demonstrate the effectiveness of the repeater modeling technique in preserving placement convergence (often accompanied by wire-length improvement) at the 45- and 32-nm technology nodes
Keywords :
integrated circuit interconnections; integrated circuit layout; perturbation techniques; repeaters; 32 nm; 45 nm; buffer insertion; circuit scaling; deep submicrometer; integrated circuit interconnect; integrated circuit layout; interleaved placement; massive placement perturbations; nanotechnology nodes; perturbation control; placement convergence; quadratic placement algorithms; repeater modeling technique; repeater-insertion flows; wire-length improvement; Engines; Integrated circuit interconnections; Integrated circuit layout; Integrated circuit technology; Power grids; Repeaters; Routing; Voltage; White spaces; Wire; Buffer insertion; deep submicrometer; integrated circuit layout; interconnect; physical design; placement;
Journal_Title :
Computer-Aided Design of Integrated Circuits and Systems, IEEE Transactions on
DOI :
10.1109/TCAD.2005.858273
