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Practical Prefetching Techniques For Parallel File Systems, David Kotz, Carla Schlatter Ellis
Practical Prefetching Techniques For Parallel File Systems, David Kotz, Carla Schlatter Ellis
Dartmouth Scholarship
Parallel disk subsystems have been proposed as one way to close the gap between processor and disk speeds. In a previous paper we showed that prefetching and caching have the potential to deliver the performance benefits of parallel file systems to parallel applications. In this paper we describe experiments with practical prefetching policies, and show that prefetching can be implemented efficiently even for the more complex parallel file access patterns. We test these policies across a range of architectural parameters.
Caching And Writeback Policies In Parallel File Systems, David Kotz, Carla Schlatter Ellis
Caching And Writeback Policies In Parallel File Systems, David Kotz, Carla Schlatter Ellis
Dartmouth Scholarship
Improvements in the processing speed of multiprocessors are outpacing improvements in the speed of disk hardware. Parallel disk I/O subsystems have been proposed as one way to close the gap between processor and disk speeds. Such parallel disk systems require parallel file system software to avoid performance-limiting bottlenecks. We discuss cache management techniques that can be used in a parallel file system implementation. We examine several writeback policies, and give results of experiments that test their performance.