| 1 |
Goal is to provide model for portable file system allowing for optimization of parallel I/O
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portable I/O interface POSIX judged not possible to allow enough optimization
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| 2 |
Parallel I/O system provides high-level interface supporting transfers of global data structures between process memories and files.
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| 3 |
Significant optimizations required include:
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grouping, collective buffering, and disk-directed I/O
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| 4 |
Other optimizations also achieved by
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asynchronous I/O, strided accesses and control over physical file layout on disks.
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| 5 |
I/O access modes defined by data partitioning expressed with derived datatypes
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