Efficient business processes are key to economic success. With the need to frequently adapt or restructure business processes and workflows in a dynamic market, agile processes and (semi-)automatic workflow and proces...
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Efficient business processes are key to economic success. With the need to frequently adapt or restructure business processes and workflows in a dynamic market, agile processes and (semi-)automatic workflow and process composition would be useful. Currently, this is a manual and time-consuming task. Automating and optimizing this task is of high interest in research communities. Nevertheless, the orientation differs: Some focus on semantic web services, others on Grid workflows or concentrate on business process management. In this paper we present a survey of available workflow annotation and composition approaches in all of these areas. We additionally categorize and compare them and describe future work.
Dependency-based representations of natural language syntax require a fine balance between structural flexibility and computational complexity. In previous work, several constraints have been proposed to identify clas...
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Bioinformatics is among the most active research areas in computer science. In this study, we investigate a suite of workloads in bioinformatics on two multiprocessor systems with different configurations, and examine...
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Hardware trends suggest that large-scale CMP architectures, with tens to hundreds of processing cores on a single piece of silicon, are iminent within the next decade. While existing CMP machines have traditionally be...
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ISBN:
(纸本)159593636X
Hardware trends suggest that large-scale CMP architectures, with tens to hundreds of processing cores on a single piece of silicon, are iminent within the next decade. While existing CMP machines have traditionally been handled in the same way as SMPs, this magnitude of parallelism introduces several fundamental challenges at the architectural level and this, in turn, translates to novel challenges in the design of the software stack for these platforms. This paper presents the "Many Core Run Time" (McRT), a software prototype of an integrated language runtime that was designed to explore configurations of the software stack for enabling performance and scalability on large scale CMP platforms. This paper presents the architecture of McRT and discusses our experiences with the system, including experimental evaluation that lead to several interesting, non-intuitive findings, providing key insights about the structure of the system stack at this scale. A key contribution of this paper is to demonstrate how McRT enables near linear improvements in performance and scalability for desktop workloads such as the popular XviD encoder and a set of RMS (recognition, mining, and synthesis) applications. Another key contribution of this work is its use of McRT to explore non-traditional system configurations such as a light-weight executive in which McRT runs on "bare metal" and replaces the traditional OS. Such configurations are becoming an increasingly attractive alternative to leverage heterogeneous computing uints as seen in today's CPU-GPU configurations. Copyright 2007 ACM.
The development of web services and especially semantic web services is a tremendous task for people who are not familiar with all language constructs. Especially with the growing mass of several semantic web service ...
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ISBN:
(纸本)9789898111005
The development of web services and especially semantic web services is a tremendous task for people who are not familiar with all language constructs. Especially with the growing mass of several semantic web service approaches a language-independent service development is needed. This gap can be filled by using model-driven software development. Therefore, in this paper we introduce a meta-model for semantic web services and show the benefits of automatic code generation on the basis of a small example.
As multi-core processors with tens or hundreds of cores begin to proliferate, system optimization issues once faced only by the high-performance computing (HPC) community will become important to all programmers. Howe...
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Peer-to-peer (P2P) networks such as Gnutella and BitTorrent have revolutionised Internet based applications. P2P approaches provide a number of benefits, however most cycle stealing projects, such as SETI@home, have c...
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The share of software in embedded systems has been growing permanently in the recent years. Thus, software architecture as well as its evaluation has become an important part of embedded systems design to define, asse...
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With single thread performance starting to plateau, HW architects have turned to chip level multiprocessing (CMP) to increase processing power. All major microprocessor companies are aggressively shipping multi-core p...
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ISBN:
(纸本)1595936025
With single thread performance starting to plateau, HW architects have turned to chip level multiprocessing (CMP) to increase processing power. All major microprocessor companies are aggressively shipping multi-core products in the mainstream computing market. Moore's law will largely be used to increase HW thread-level parallelism through higher core counts in a CMP environment. CMPs bring new challenges into the design of the software system stack. In this tutorial, we talk about the shift to multi-core processors and the programming implications. In particular, we focus on transactional programming. Transactions have emerged as a promising alternative to lock-based synchronization that eliminates many of the problems associated with lock-based synchronization. We discuss the design of both hardware and software transactional memory and quantify the tradeoffs between the different design points. We show how to extend the Java and C languages with transactional constructs, and how to integrate transactions with compiler optimizations and the language runtime (e.g., memory manager and garbage collection).
This paper describes the design and implementation of a research dynamic binary translation system, StarDBT, which runs many real-world applications. StarDBT is a multi-platform translation system that is capable of t...
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