Open AccessOPTIMIZATION OF THE COMPUTATION OF MULTIDIMENSIONAL INTEGRALS FOR ESTIMATING THE MESON LIFETIME
Author(s) -
D. Goderidze,
Yu. L. Kalinovsky,
A. V. Friesen
Publication year - 2021
Publication title -
9th international conference "distributed computing and grid technologies in science and education"
Language(s) - English
Resource type - Conference proceedings
DOI - 10.54546/mlit.2021.60.36.001
Subject(s) - coprocessor , monte carlo method , xeon , cuda , computation , computer science , computational science , xeon phi , physics , supercomputer , parallel computing , nuclear physics , algorithm , mathematics , statistics
To calculate the lifetime of mesons in hot and dense nuclear matter, it is necessary to computemultidimensional integrals with a complicated integrand function. This work presents an algorithmand methods to calculate such integrals on the basis of the Monte-Carlo method. To optimize thecomputation, the parallel calculation algorithm is implemented in the C++ programming languageusing OpenMP and NVIDIA CUDA technologies. The calculations are performed on nodes withmulticore CPUs and Intel Xeon Phi coprocessors and the Nvidia Tesla K40 accelerator installed withina heterogeneous cluster of the Meshcheryakov Laboratory of Information Technologies, Joint Institutefor Nuclear Research, Dubna. The code is used to calculate the pion lifetime using all possible pionpion scattering modes.