TY - GEN
T1 - Parallel implementation of Boltzmann Transport Simulation of carbon nanotubes
AU - Aksamija, Zlatan
AU - Mohamed, Mohamed Y.
AU - Ravaioli, Umberto
PY - 2009
Y1 - 2009
N2 - This works treats electronic transport in SWNTs in the Boltzmann Transport equation (BTE) formalism. The BTE is solved self-consistently with the Poisson equation and iterated in time using an upwinding finite-difference scheme until a steady-state is reached. Phonon scattering is included through a relaxation time based on experimental values reported in the literature. The problem is parallelized by dividing the real space into strips, where each strip is assigned to one processing element to minimize communication overhead. The implementation was tested on a many-processor cluster and shows good speed-up over the serial code. This demonstrates that the code is capable of excellent scaling to large supercomputing machines for large-scale parallel simulation of nanotubes, as well as other similar 1-dimensional materials like nanoribbons and nanowires.
AB - This works treats electronic transport in SWNTs in the Boltzmann Transport equation (BTE) formalism. The BTE is solved self-consistently with the Poisson equation and iterated in time using an upwinding finite-difference scheme until a steady-state is reached. Phonon scattering is included through a relaxation time based on experimental values reported in the literature. The problem is parallelized by dividing the real space into strips, where each strip is assigned to one processing element to minimize communication overhead. The implementation was tested on a many-processor cluster and shows good speed-up over the serial code. This demonstrates that the code is capable of excellent scaling to large supercomputing machines for large-scale parallel simulation of nanotubes, as well as other similar 1-dimensional materials like nanoribbons and nanowires.
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U2 - 10.1109/IWCE.2009.5091137
DO - 10.1109/IWCE.2009.5091137
M3 - Conference contribution
AN - SCOPUS:70350218876
SN - 9781424439270
T3 - Proceedings - 2009 13th International Workshop on Computational Electronics, IWCE 2009
BT - Proceedings - 2009 13th International Workshop on Computational Electronics, IWCE 2009
T2 - 2009 13th International Workshop on Computational Electronics, IWCE 2009
Y2 - 27 May 2009 through 29 May 2009
ER -