Time parallelization of advanced operation scenario simulations of ITER plasma

Conference · Tue Jan 01 00:00:00 EST 2013

OSTI ID:1092362

Samaddar, D. ^[1]; Casper, T. A. ^[2]; Kim, S. H. ^[1]; Berry, Lee A ^[3]; Elwasif, Wael R ^[3]; Batchelor, Donald B ^[3]; Houlberg, Wayne A ^[3]

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1. ITER Organization, Saint Paul Lez Durance, France
2. Lawrence Livermore National Laboratory (LLNL)
3. ORNL

This work demonstrates that simulations of advanced burning plasma operation scenarios can be successfully parallelized in time using the parareal algorithm. CORSICA - an advanced operation scenario code for tokamak plasmas is used as a test case. This is a unique application since the parareal algorithm has so far been applied to relatively much simpler systems except for the case of turbulence. In the present application, a computational gain of an order of magnitude has been achieved which is extremely promising. A successful implementation of the Parareal algorithm to codes like CORSICA ushers in the possibility of time efficient simulations of ITER plasmas.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1092362
• Resource Relation: Conference: IC-MSQUARE 2012: International Conference on Mathematical Modelling in Physical Sciences, Budapest, Hungary, 20120903, 20120907
• Country of Publication: United States
• Language: English