Requirements of I/O Systems for Parallel Machines: An Application-driven Study

dc.contributor.authorUysal, Mustafaen_US
dc.contributor.authorAcharya, Anuragen_US
dc.contributor.authorSaltz, Joelen_US
dc.description.abstractI/O-intensive parallel programs have emerged as one of the leading consumers of cycles on parallel machines. This change has been driven by two trends. First, parallel scientific applications are being used to process larger datasets that do not fit in memory. Second, a large number of parallel machines are being used for non-scientific applications. Efficient execution of these applications requires high-performance I/O systems which have been designed to meet their I/O requirements. In this paper, we examine the I/O requirements for data-intensive parallel applications and the implications of these requirements for the design of I/O systems for parallel machines. We attempt to answer the following questions. First, what is the steady-state as well peak I/O rate required? Second, what spatial patterns, if any, occur in the sequence of I/O requests for individual applications? Third, what is the degree of intra-processor and inter-processor locality in I/O accesses? Fourth, does the application structure allow programmers to disclose future I/O requests to the I/O system? Fifth, what patterns, if any, exist in the sequence of inter-arrival times of I/O requests? To address these questions, we have analyzed I/O request traces for a diverse set of I/O-intensive parallel applications. This set includes seven scientific applications and four non-scientific applications. (Also cross-referenced as UMIACS-TR-97-49)en_US
dc.format.extent227476 bytes
dc.relation.isAvailableAtDigital Repository at the University of Marylanden_US
dc.relation.isAvailableAtUniversity of Maryland (College Park, Md.)en_US
dc.relation.isAvailableAtTech Reports in Computer Science and Engineeringen_US
dc.relation.isAvailableAtUMIACS Technical Reportsen_US
dc.relation.ispartofseriesUM Computer Science Department; CS-TR-3802en_US
dc.relation.ispartofseriesUMIACS; UMIACS-TR-97-49en_US
dc.titleRequirements of I/O Systems for Parallel Machines: An Application-driven Studyen_US
dc.typeTechnical Reporten_US


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