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SUMMARY HPCTOOLKIT is an integrated suite of tools that supports measurement, analysis, attribution, and presentation of application performance for both sequential and parallel programs. HPCTOOLKIT can pinpoint and quantify scalability bottlenecks in fully-optimized parallel programs with a measurement overhead of only a few percent. Recently, new(More)
1. Introduction As part of the Department of Energy's Scientific Discovery through Advanced Computing program, Rice University is developing HPCToolkit [1], a performance toolkit for accurately measuring and pinpointing performance bottlenecks on emerging petascale computer systems. HPCToolkit consists of components for measuring the performance of(More)
Cutting-edge science and engineering applications require petascale computing. It is, however, a significant challenge to use petascale computing platforms effectively. Consequently, there is a critical need for performance tools that enable scientists to understand impediments to performance on emerging petascale systems. In this paper, we describe(More)
Today's largest supercomputers consist of tens of thousands of nodes equipped with one or more multi-core microprocessors. A challenge for performance tools is that bottlenecks in programs executing on these systems may arise from a myriad of causes. To address this problem, Rice University is developing HPCTOOLKIT-an integrated suite of tools that supports(More)
1 General Description We implemented four HPC Challenge benchmarks: Global HPL, Global RandomAccess, EP STREAM (Triad), and Global FFT in Coarray Fortran 2.0; in addition, we implemented an extra benchmark — Unbalanced Tree Search (UTS) [9]. Coarray Fortran 2.0 is an extension of Coarray Fortran developed at Rice University to improve expressiveness and(More)
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