SC is the International Conference for
 High Performnance Computing, Networking, Storage and Analysis

SCHEDULE: NOV 13-19, 2010

A Parallel Implementation of Electron-Phonon Scattering in Nanoelectronic Devices up to 95K Cores

SESSION: Multiple Scale Particle-based Algorithms


TIME: 4:00PM - 4:30PM

SESSION CHAIR: Andrew M Canning

AUTHOR(S):Mathieu Luisier


A quantum transport approach based on the Non-equilibrium Green's Function formalism and the tight-binding method has been developed to investigate the performances of atomistically resolved nanoelectronic devices in the presence of electron-phonon scattering. The model is integrated into a quad-level parallel environment (bias, momentum, energy, and spatial domain decomposition) that scales almost perfectly up to 220k cores in the ballistic limit of electron transport. In this case, the momentum and energy points form a quasi-embarrassingly parallel problem. The novelty in this paper is the inclusion of scattering self-energies that couple all the momenta and several energies together, requiring substantial inter-processor communication. An efficient parallel implementation of electron-phonon scattering is therefore proposed and applied to a realistically extended transistor structure. A good scaling of the simulation walltime up to 95,256 cores per bias point and a sustained performance of 142 TFlop/s are reported on the Cray-XT5 Jaguar.

Chair/Author Details:

Andrew M Canning (Chair) - Lawrence Berkeley National Laboratory

Mathieu Luisier - Purdue University

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The full paper can be found in the ACM Digital Library and IEEE Computer Society

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