Fast calculation of HELAS amplitudes using graphics processing unit (GPU)

Autor:	Hagiwara, K., Kanzaki, J., Okamura, N., Rainwater, D., Stelzer, T.
Rok vydání:	2009
Předmět:	Physics - Computational Physics High Energy Physics - Experiment High Energy Physics - Phenomenology
Zdroj:	Eur.Phys.J.C66:477-492,2010
Druh dokumentu:	Working Paper
DOI:	10.1140/epjc/s10052-010-1276-8
Popis:	We use the graphics processing unit (GPU) for fast calculations of helicity amplitudes of physics processes. As our first attempt, we compute $u\bar{u}\to n\gamma$ ($n=2$ to 8) processes in $pp$ collisions at $\sqrt{s} = 14$TeV by transferring the MadGraph generated HELAS amplitudes (FORTRAN) into newly developed HEGET ({\bf H}ELAS {\bf E}valuation with {\bf G}PU {\bf E}nhanced {\bf T}echnology) codes written in CUDA, a C-platform developed by NVIDIA for general purpose computing on the GPU. Compared with the usual CPU programs, we obtain 40-150 times better performance on the GPU. Comment: 14 pages, 8 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0908.4403 Zobrazit plný text záznamu View this record from Arxiv