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Parallel Transient Simulation of Multiphysics Circuits Using Delay-Based Partitioning

S. Priyadarshi ; Christopher Saunders (Institutionen för energi och miljö, Elteknik) ; N. M. Kriplani ; H. Demircioglu ; W. R. Davis ; P. D. Franzon ; M. B. Steer
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems (0278-0070). Vol. 31 (2012), 10, p. 1522-1535.
[Artikel, refereegranskad vetenskaplig]

A parallel transient simulation technique for multiphysics circuits is presented. The technique develops partitions utilizing the inherent delay present within a circuit and between physical domains. A state-variable-based circuit delay element is presented, which implements the coupling between two spatially or temporally isolated circuit partitions. A parallel delay-based iterative approach for interfacing delay-partitioned subcircuits is applied, which achieves the reasonable accuracy of nonparallel circuit simulation if both incorporate the same interblock delay. The partitioned subcircuits are distributed to different cores of a shared-memory multicore processor and solved in parallel. A multithreaded implementation of the methodology using OpenMP is presented. Examples showing superlinear speedup compared to unpartitioned single-core simulation using the direct method are presented. This paper also discusses the impact of load balancing and absolute delay on simulation speedup.

Nyckelord: Delay element, electrothermal simulation, multicore, multiphysics, parallel simulation, parallelization, integrated-circuits, transistor level, device model, passivity



Denna post skapades 2012-10-29.
CPL Pubid: 165219

 

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Institutioner (Chalmers)

Institutionen för energi och miljö, Elteknik

Ämnesområden

Data- och informationsvetenskap

Chalmers infrastruktur