Published February 15, 2023
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Parallel IO on ARCHER2
Description
File input and output can become bottlenecks for parallel programs running on large numbers of processors. In this work we investigate how to increase the MPI-IO performance on ARCHER2, the UK National HPC service, using the Cray Lustre lockahead options which have not been previously investigated on this system. We then investigate the performance of ADIOS2, a more modern parallel IO library, and look at the performance of IO from a real HPC application rather than a synthetic benchmark.
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parallel_IO_eurocc.pdf
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