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Full-Text Articles in Physical Sciences and Mathematics
Enhancing Portability In High Performance Computing: Designing Fast Scientific Code With Longevity, Jason Orender
Enhancing Portability In High Performance Computing: Designing Fast Scientific Code With Longevity, Jason Orender
Computer Science Theses & Dissertations
Portability, an oftentimes sought-after goal in scientific applications, confers a number of possible advantages onto computer code. Portable code will often have greater longevity, enjoy a broader ecosystem, appeal to a wider variety of application developers, and by definition will run on more systems than its pigeonholed counterpart. These advantages come at a cost, however, and a rational approach to balancing costs and benefits requires a systemic evaluation. While the benefits for each application are likely situation-dependent, the costs in terms of resources, including but not limited to time, money, computational power, and memory requirements, are quantifiable. This document will …
An Optimized Multiple Right-Hand Side Dslash Kernel For Intel Xeon Phi, Aaron Walden
An Optimized Multiple Right-Hand Side Dslash Kernel For Intel Xeon Phi, Aaron Walden
Computer Science Theses & Dissertations
Lattice quantum chromodynamics (LQCD) stands unique as the only computationally tractable, non-perturbative, and model-independent quantum field theory of the strong nuclear force. The computational core of LQCD is the Wilson Dslash operator, a nearest neighbor stencil operator summing matrix-vector multiplications over lattice points, whose performance is bandwidth-bound on most architectures. Reportedly, up to 90\% of LQCD running time may be spent computing Dslash. In recent years, efforts have been made by researchers to optimize LQCD calculations for floating point coprocessor cards such as GPUs and Intel Xeon Phi Knights Corner (KNC), which boast powerful vector processing units. Most of these …