Accession Number : ADA318922

Title :   High-Performance Data-Parallel Input/Output.

Descriptive Note : Doctoral thesis,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH

Personal Author(s) : Moore, Jason A.

PDF Url : ADA318922

Report Date : 19 JUL 1996

Pagination or Media Count : 201

Abstract : First-generation commercial multiple-CPU computers provided little support for parallel disk I/O, either in terms of a high-performance parallel disk system or a reasonable programming interface. Today, advances in disk arrays, coupled with the striping of data across powerful I/O nodes, provide the means for systems such as the Thinking Machines CM-5, Intel Paragon, Meiko CS-2, and IBM SP-2 to provide reasonable disk bandwidth to parallel applications. Unfortunately, disk bandwidth is necessary, but not sufficient, to support parallel I/O operations. Existing parallel file systems are proving inadequate in two important arenas: programmability and performance. Both of these inadequacies can largely be traced to the fact that nearly all parallel file systems evolved from Unix and rely on a Unix-oriented, single-stream approach to file I/O. More researchers are agreeing that this approach is not ideal for supporting multiprocessor systems. In this dissertation, these issues are addressed in the context of distributed memory parallel computers like the SP-2 and CS-2. The processors on such a machine are connected by a fast network, and parallel file access is provided by a subset of processors acting as I/O nodes. File data are striped across the I/O nodes, which can communicate with each other and the remaining (compute) nodes using the parallel network. A generic example of such a system is shown in Figure 1.1.

Descriptors :   *INPUT OUTPUT PROCESSING, *PARALLEL PROCESSING, NETWORKS, DISTRIBUTION, COMPUTERS, PERFORMANCE(ENGINEERING), INTERFACES, COMPUTER PROGRAMMING, ARRAYS, NODES, MEMORY DEVICES, MULTIPROCESSORS, DISKS, BANDWIDTH.

Subject Categories : Computer Hardware

Distribution Statement : APPROVED FOR PUBLIC RELEASE