NDLI: From the heroic to the logistical: programming model implications of new supercomputing applications

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From the heroic to the logistical: programming model implications of new supercomputing applications

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From the heroic to the logistical: programming model implications of new supercomputing applications

Content Provider	ACM Digital Library
Author	Foster, Ian
Abstract	High-performance computers such as the petascale systems being installed at DOE and NSF centers in the US are conventionally focused on "heroic" computations in which many processors are applied to a single task. Yet a growing number of science applications are equally concerned with "logistical" issues: that is, with the high-performance and reliable execution of many tasks that operate on large shared data and/or are linked by communication-intensive producer-consumer relations. Such applications may require the extreme computational capacity and specialized communication fabrics of petascale computers, but are not easily expressed using conventional parallel programming models such as MPI. To enable the use of high-performance computers for these applications, we need new methods for the efficient dispatch, coupling, and management of large numbers of communication-intensive tasks. I discuss how work on scripting languages, high-throughput computing, and parallel I/O can be combined to build new tools that enable the efficient and reliable execution of applications involving from hundreds to millions of uniprocessor and multiprocessor tasks, with aggregate communication requirements of tens of gigabytes per second. I illustrate my presentation by referring to our experiences adapting the Swift parallel programming system (www.ci.uchicago.edu/swift) for efficient execution in both large-scale grid and petascale cluster environments.
Starting Page	57
Ending Page	58
Page Count	2
File Format	PDF
ISBN	9781605581569
DOI	10.1145/1383529.1383541
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2008-06-23
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Parallel programming Many tasks applications High-throughput computing
Content Type	Text
Resource Type	Article

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