Experience with OpenMP for MADX-SC

D'Imperio, Nicholas¹  Montag, Christophe¹  Yu, Kwangmin² 

[1] Brookhaven National Lab. (BNL), Upton, NY (United States). Collider-Accelerator Dept.;Brookhaven National Lab.

关键词: BROOKHAVEN RHIC;    SPACE CHARGE;    COMPUTERIZED SIMULATION;    PARALLEL PROCESSING;    M CODES;    OPTIMIZATION;    CERN PS SYNCHROTRON;    BEAM DYNAMICS;   

DOI  :  10.2172/1149122
RP-ID  :  BNL--105538-2014-IR
RP-ID  :  CERN-ACC--2014-0075
RP-ID  :  BNL--C-A/AP/515
PID  :  OSTI ID: 1149122
Others  :  R&D Project: KBCH139
Others  :  18031
Others  :  Other: KB0202011
Others  :  TRN: US1500107

学科分类：核物理和高能物理

美国|英语

来源: SciTech Connect

【 摘 要 】

MADX-SC allows the treatment of frozen space charge using beam-beam elements in a thin lattice, i.e. one can take advantage of the standard set-up of MAD-X lattices without the need for specialized codes for the space-charge (SC) evaluation. The idea is to simulate over many turns without the problem of noise as in the PIC SC codes. For the examples under study, like the PS and RHIC, it would be desirable to simulate up to 1 million turns or more. To this end one had to make an effort to optimize the scalar speed and, most importantly, get a speed-up of approximately a factor of 5 using OpenMP.