LLNL Mercury Project Trinity Open Science Final Report

Brantley, Patrick¹  Dawson, Shawn¹  McKinley, Scott¹  O'Brien, Matt¹  Peters, Doug¹  Pozulp, Mike¹  Becker, Greg¹  Mohror, Kathryn¹  Moody, Adam¹ 

[1]Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

关键词: LAWRENCE LIVERMORE NATIONAL LABORATORY;    COMPUTERIZED SIMULATION;    MONTE CARLO METHOD;    ALGORITHMS;    CONVERGENCE;    GEOMETRY;    RADIATION TRANSPORT;    URBAN AREAS;    PARALLEL PROCESSING;   

DOI  :  10.2172/1252640
RP-ID  :  LLNL-TR--689799
PID  :  OSTI ID: 1252640
Others  :  TRN: US1601366

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来源: SciTech Connect

【 摘 要 】

The Mercury Monte Carlo particle transport code developed at Lawrence Livermore National Laboratory (LLNL) is used to simulate the transport of radiation through urban environments. These challenging calculations include complicated geometries and require significant computational resources to complete. As a result, a question arises as to the level of convergence of the calculations with Monte Carlo simulation particle count. In the Trinity Open Science calculations, one main focus was to investigate convergence of the relevant simulation quantities with Monte Carlo particle count to assess the current simulation methodology. Both for this application space but also of more general applicability, we also investigated the impact of code algorithms on parallel scaling on the Trinity machine as well as the utilization of the Trinity DataWarp burst buffer technology in Mercury via the LLNL Scalable Checkpoint/Restart (SCR) library.