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Parallel I/O Performance Characterization of Columbia and NEC SX-8 Superclusters Export

Parallel and Distributed Processing Symposium, 2007. IPDPS 2007. IEEE International In Parallel and Distributed Processing Symposium, 2007. IPDPS 2007. IEEE International (2007), pp. 1-10.

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i-o performance_analysis supercomputer_cases

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Many scientific applications running on today's supercomputers deal with increasingly large data sets and are correspondingly bottlenecked by the time it takes to read or write the data from/to the file system. We therefore undertook a study to characterize the parallel I/O performance of two of today's leading parallel supercomputers: the Columbia system at NASA Ames Research Center and the NEC SX-8 supercluster at the University of Stuttgart, Germany. On both systems, we ran a total of seven parallel I/O benchmarks, comprising five low-level benchmarks: (i) IO_Bench, (ii) MPI Tile IO, (iii) IOR (POSIX and MPI-IO), (iv) b_eff_io (five different patterns), and (v) SPIOBENCH, and two scalable synthetic compact application (SSCA) benchmarks: (a) HPCS (high productivity computing systems) SSCA #3 and (b) FLASH IO (parallel HDF5). We present the results of these experiments characterizing the parallel I/O performance of these two systems.


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