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

作者：Hagiwara K^*; Kanzaki J; Okamura N; Rainwater D; Stelzer T

来源：European Physical Journal C, 2010, 66(3-4): 477-492.

DOI：10.1140/epjc/s10052-010-1276-8

We use the graphics processing unit (GPU) for fast calculations of helicity amplitudes of physics processes. As our first attempt, we compute u (u) over bar -> n gamma (n = 2 to 8) processes in pp collisions at v s = 14 TeV by transferring the MadGraph generated HELAS amplitudes (FORTRAN) into newly developed HEGET (HELAS Evaluation with GPU Enhanced Technology) codes written in CUDA, a Cplatform developed by NVIDIA for general purpose computing on the GPU. Compared with the usual CPU programs, we obtain a 40-150 times better performance on the GPU.

• 出版日期2010-4