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Parallel netCDF: A High-Performance Scientific I/O Interface
Dataset storage, exchange, and access play a critical role in scientific applications. For such purposes netCDF serves as a portable, efficient file format and programming interface, which is popularExpand
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Extensible component-based architecture for FLASH, a massively parallel, multiphysics simulation code
FLASH is a publicly available high performance application code which has evolved into a modular, extensible software system from a collection of unconnected legacy codes. FLASH has been successfulExpand
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XSBENCH - THE DEVELOPMENT AND VERIFICATION OF A PERFORMANCE ABSTRACTION FOR MONTE CARLO REACTOR ANALYSIS
We isolate the most computationally expensive steps of a robust nuclear reactor core Monte Carlo particle transport simulation. The hot kernel is then abstracted into a simplified proxy application,Expand
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Petascale algorithms for reactor hydrodynamics
We describe recent algorithmic developments that have enabled large eddy simulations of reactor flows on up to P = 65, 000 processors on the IBM BG/P at the Argonne Leadership Computing Facility.
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Multi-core performance studies of a Monte Carlo neutron transport code
Performance results are presented for a multi-threaded version of the OpenMC Monte Carlo neutronics code using OpenMP in the context of nuclear reactor criticality calculations. Our main interest isExpand
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A Wavelet-Packet Census Algo-rithm for Calculating Vortex Statistics
A generalized wavelet-packet based technique for decomposing signals into coherent and noncoherent parts is presented. The method is tested on the vorticity field of numerical simulations of weaklyExpand
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Memory Bottlenecks and Memory Contention in Multi-Core Monte Carlo Transport Codes
We have extracted a kernel that executes only the most computationally expensive steps of the Monte Carlo particle transport algorithm - the calculation of macroscopic cross sections - in an effortExpand
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The Software development process of FLASH, a multiphysics simulation code
The FLASH code has evolved into a modular and extensible scientific simulation software system over the decade of its existence. During this time it has been cumulatively used by over a thousandExpand
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A performance analysis of ensemble averaging for high fidelity turbulence simulations at the strong scaling limit
Abstract We analyze the potential performance benefits of estimating expected quantities in large eddy simulations of turbulent flows using true ensembles rather than ergodic time averaging. MultipleExpand
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RANS-based CFD simulations of sodium fast reactor wire-wrapped pin bundles
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