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- W2253710306 abstract "The contemporary parallel I/O software stack is complex due to a large number of configurations for tuning I/O performance. Without a proper configuration, I/O becomes a performance bottleneck. As high performance computing (HPC) is moving towards exascale, poor I/O performance has a significant impact on the runtime of large-scale simulations producing massive amounts of data. In this paper, we focus on developing a framework for tuning parallel I/O configurations automatically. This auto-tuning framework first traces high-level I/O accesses and analyzes data write patterns. Based on these patterns and historically available tuning parameters for similar patterns, the framework selects best performing configurations at runtime. If previous history for a pattern is unavailable, the framework initiates model-based training to acquire efficient set of tuning parameters. Our framework includes a runtime system to apply the selected configurations using dynamic linking, without the need for changing application source code. In this paper, we describe this framework and evaluate it using multiple I/O kernels extracted from real applications and demonstrate substantial I/O performance improvement." @default.
- W2253710306 created "2016-06-24" @default.
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- W2253710306 date "2015-11-15" @default.
- W2253710306 modified "2023-09-30" @default.
- W2253710306 title "Pattern-driven parallel I/O tuning" @default.
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- W2253710306 doi "https://doi.org/10.1145/2834976.2834977" @default.
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