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- W4200488498 abstract "Using parallel file systems efficiently is a tricky problem due to inter-dependencies among multiple layers of I/O software, including high-level I/O libraries (HDF5, netCDF, etc.), MPI-IO, POSIX, and file systems (GPFS, Lustre, etc.). Profiling tools such as Darshan collect traces to help understand the I/O performance behavior. However, there are significant gaps in analyzing the collected traces and then applying tuning options offered by various layers of I/O software. Seeking to connect the dots between I/O bottleneck detection and tuning, we propose DXT Explorer, an interactive log analysis tool. In this paper, we present a case study using our interactive log analysis tool to identify and apply various I/O optimizations. We report an evaluation of performance improvement achieved for four I/O kernels extracted from science applications." @default.
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- W4200488498 date "2021-11-01" @default.
- W4200488498 modified "2023-10-16" @default.
- W4200488498 title "I/O Bottleneck Detection and Tuning: Connecting the Dots using Interactive Log Analysis" @default.
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- W4200488498 doi "https://doi.org/10.1109/pdsw54622.2021.00008" @default.
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