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Arachne: A portable threads system supporting migrant threads on heterogeneous network farms

IEEE TRANSACTIONS ON PARALLEL AND DISTRIBUTED SYSTEMS 1998年第5期9卷 459-469页

作者： Dimitrov, B Rego, V Purdue Univ Dept Comp Sci W Lafayette IN 47907 USA

We present the design and implementation of Arachne, a threads system that can be interfaced with a communications library for multithreaded distributed computations. In particular, Arachne supports thread migration between heterogeneous platforms, dynamic stack size management, and recursive thread functions. Arachne is efficient, flexible, and portable-it is based entirely on C and C++. To facilitate heterogeneous thread operations, we have added three keywords to the C++ language. The Arachne preprocessor takes as input code written in that language and outputs C++ code suitable for compilation with a conventional C++ compiler. The Arachne runtime system manages all threads during program execution. We present some performance measurements on the costs of basic thread operations and thread migration in Arachne and compare these to costs in other threads systems.

关键词： heterogeneous thread migration user-level threads compile-time code transformations C++

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MigThread: Thread migration in DSM systems

MigThread: Thread migration in DSM systems

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31st International Conference on Parallel Processing (ICPP 2002)

作者： Jiang, H Chaudhary, V Wayne State Univ Inst Comp Sci Detroit MI 48202 USA

ISBN: (纸本)0769516807

Distributed Shared Memory (DSM) systems provide a logically shared memory over physically distributed memory to enable parallel computation on Networks of Workstations (NOWs), In this paper, we propose an infrastructure for DSM systems to utilize idle cycles in the network by thread migration. To maintain high portability and flexibility, a generic thread migration package, MigThread, is implemented at language level. At compile-time, a preprocessor scans C programs to build thread state, detects possible thread adaptation points, and transforms the source code accordingly. At runtime, MigThread moves DSM threads around to utilize idle cycles on remote machines, Since the physical thread state is transformed into a logical form, MigThread is ready to be used in heterogeneous DSM systems. We implemented MigThread in a DSM system Strings. A comparison with other migration schemes and some performance measurements on real applications are reported to show the efficiency.

关键词： Software Distributed Shared Memory adaptive parallel computing thread migration thread scheduling compile-time code transformations

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