Experience with OpenMP for MADX-SC

Technical Report · Tue Jul 01 00:00:00 EDT 2014

DOI:https://doi.org/10.2172/1149122· OSTI ID:1149122

D'Imperio, Nicholas ^[1]; Montag, Christophe ^[1]; Yu, Kwangmin ^[1]; Kapin, Valery ^[2]; McIntosh, Eric ^[3]; Renshall, Harry ^[3]; Schmidt, Frank ^[3]

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1. Brookhaven National Lab. (BNL), Upton, NY (United States). Collider-Accelerator Dept.
2. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
3. European Organization for Nuclear Research (CERN), Geneva (Switzerland)

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.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC02-98CH10886
• OSTI ID: 1149122
• Report Number(s): BNL-105538-2014-IR; CERN-ACC-2014-0075; BNL-C-A/AP/515; R&D Project: KBCH139; 18031; KB0202011; TRN: US1500107
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BROOKHAVEN RHIC
SPACE CHARGE
COMPUTERIZED SIMULATION
PARALLEL PROCESSING
M CODES
OPTIMIZATION
CERN PS SYNCHROTRON
BEAM DYNAMICS