• J. Xu, P.F. Fisher, M. Min, B. Mustapha, J.A. Nolen, P.N. Ostroumov
  ANL, Argonne

Pe­ta-scal­able soft­ware pack­ages for beam dy­nam­ic sim­u­la­tions are being de­vel­oped and used at the Ar­gonne Lead­er­ship Com­put­ing Fa­cil­i­ty. The stan­dard Par­ti­cle-In-Cell (PIC) method and di­rect Vlasov solvers in 4 di­men­sions have been de­vel­oped and bench­marked with re­spect to each other. Both of them have been suc­cess­ful­ly run on 32 thou­sands pro­ces­sors on BG/P at Ar­gonne Na­tion­al Lab­o­ra­to­ry. Chal­lenges and prospects of de­vel­op­ing Vlasov solvers in high­er di­men­sions will be dis­cussed. Sev­er­al scal­able Pois­son solvers have been de­vel­oped and in­cor­po­rat­ed with these soft­ware pack­ages. Do­main de­com­po­si­tion method has been used for the par­al­leliza­tion. In the fu­ture de­vel­op­ments, these al­go­rithms will be ap­plied to hun­dreds of thou­sands pro­ces­sors for pe­ta-scale com­put­ing. These soft­ware pack­ages have been ap­plied for the de­sign of ac­cel­er­a­tors, and some large scale sim­u­la­tions will be shown and dis­cussed.

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