Title: \workload Characterization of Input/output Intensive Parallel Applications" Workload Characterization of Input/output Intensive Parallel Applications
چکیده
Because both processor and interprocessor communication hardware is evolving rapidly with only moderate improvements to le system performance in parallel systems, it is becoming increasingly diicult to provide suucient input/output (I/O) performance to parallel applications. I/O hardware and le system parallelism are the key to bridging this performance gap. Prerequisite to the development of eecient parallel le system is detailed characterization of the I/O demands of parallel applications. In the paper, we present a comparative study of parallel I/O access patterns, commonly found in I/O intensive scientiic applications. The Pablo performance analysis tool and its I/O extensions is a valuable resource in capturing and analyzing the I/O access attributes and their interactions with extant parallel I/O systems. This analysis is instrumental in guiding the development of new application programming interfaces (APIs) for parallel le systems and eeective le system policies that respond to complex application I/O requirements.