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Many I/O-and data-intensive scientific applications use parallel I/O software to access files in high performance. On modern parallel machines, the I/O software consists of several layers, including high-level libraries such as Parallel netCDF and HDF, middleware such as MPI-IO, and low-level POSIX interface supported by the file systems. For the I/O software developers, ensuring data flow is important among these software layers with performance close to the hardware limits. This task requiresdoi:10.1109/sc.companion.2012.14 dblp:conf/sc/KimSLKTC12 fatcat:ucoeziowqzhafc5fpll2bhatpy