SCHEDULE: NOV 12-18, 2011

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Atomistic nanoelectronic device engineering with sustained performances up to 1.44 PFlop/s

SESSION: ACM Gordon Bell Award Finalists 1

EVENT TYPE: ACM Gordon Bell Finalist

TIME: 2:00PM - 2:30PM

SESSION CHAIR: Thom H. Dunning, Jr.

AUTHOR(S):Mathieu Luisier, Timothy B. Boykin, Gerhard Klimeck, Wolfgang Fichtner

ROOM:TCC LL4/LL5

ABSTRACT:
We present a multi-dimensional, atomistic, quantum transport simulation approach to investigate the performances of realistic nanoscale transistors. The core operation consists in solving the Schroedinger equation with open boundary conditions several thousand times. To do that, a Wave Function approach is used since it can be relatively easily parallelized. To further improve the computational efficiency, three additional levels of parallelization are identified, the work load is optimally balanced between the CPUs, computational interleaving is applied where possible, and a mixed precision scheme is introduced. Using two different device types, a high electron mobility and a band-to-band tunneling transistor, sustained performances up to 1.28 PFlop/s in double precision (55% of the peak performance) and 1.44 PFlop/s in mixed precision are reached on 221,400 cores on the CRAY-XT5 Jaguar at Oak Ridge National Lab.

Chair/Author Details:

Thom H. Dunning, Jr. (Chair) - National Center for Supercomputing Applications

Mathieu Luisier - Purdue University

Timothy B. Boykin - University of Alabama in Huntsville

Gerhard Klimeck - Purdue University

Wolfgang Fichtner - ETH Zürich

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The full paper can be found in the ACM Digital Library