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Abstract: To demonstrate the flexibility of the Galley parallel file system and to analyze the efficiency and flexibility of the Vesta parallel file system interface, we implemented Vesta's application-programming interface on top of Galley. We implemented the Vesta interface using Galley's file-access methods, whose design arose from extensive testing and characterization of the I/O requirements of scientific applications for high-performance multiprocessors. We used a parallel CPU, parallel I/O, out-of-core matrix-multiplication application to test the Vesta interface in both its ability to specify data access patterns and in its run-time efficiency. In spite of its powerful ability to specify the distribution of regular, non-overlapping data access patterns across disks, we found that the Vesta interface has some significant limitations. We discuss these limitations in detail in the paper, along with the performance results.

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   Matthew P. Carter and David Kotz, "An Implementation of the Vesta Parallel File System API on the Galley Parallel File System." Dartmouth Computer Science Technical Report PCS-TR98-329, April 1998.

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