Using an aspect of rapidity bins with finite sizes the short-range and longrange behaviors of two-particle correlation, the connection of two particle correlation function with factorial moment and factorial correlato...Using an aspect of rapidity bins with finite sizes the short-range and longrange behaviors of two-particle correlation, the connection of two particle correlation function with factorial moment and factorial correlator are investigated; and experimental data for 16 O+Em interactions at 14.6, 60 and 200 A GeV and 32 S+197Au interactions at 200A GeV are analyzed. It is shown that the bin-average of two-particle correlation function can naturally give a coordinate description of dynamical fluctuation such as the second order factorial moment <F2> and 1+1 order factorial correlator <F1,1>.展开更多
文摘在超相对论重离子碰撞过程中的部分子级联过程,可以认为是由一系列的两夸克胶子碰撞所组成,但仅利用CPU串行仿真该过程用时较长。本次仿真创新性地首次采用ROCm并行技术在AMD Vega10上对首次两夸克胶子碰撞的探测实现了并行化处理,计算出并行程序探测到的首次两夸克胶子碰撞所需的时间,及其对应的夸克胶子对序号。另外分别采用CUDA平台的NVIDIA的P100和OpenMP平台的Intel Xeon CPU E5-2690进行验证。关于第一次碰撞的探测,在上述三个平台上得到相同的结果。相对于基于CPU串行探测首次碰撞而言,采用ROCm并行探测超相对论重离子中部分子级联中的首次碰撞,可获得最高加速比,可达18600倍。
文摘Using an aspect of rapidity bins with finite sizes the short-range and longrange behaviors of two-particle correlation, the connection of two particle correlation function with factorial moment and factorial correlator are investigated; and experimental data for 16 O+Em interactions at 14.6, 60 and 200 A GeV and 32 S+197Au interactions at 200A GeV are analyzed. It is shown that the bin-average of two-particle correlation function can naturally give a coordinate description of dynamical fluctuation such as the second order factorial moment <F2> and 1+1 order factorial correlator <F1,1>.
