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A new formalism is given for read-modify-write (rmw) synchronization opera tions. This formalism is used to extend the memory reference combining mechan ism, introduced in the nyu Ultracomputer, to arbitrary rmw operations. A for mal correctness proof of this combining mechanism is given. General requirements for the practicality of combining are discussed. Combining is shown to be practical for many useful memory access Operations. This includes memory updates of the form mem_val mem_val op val, where op need not be associative, and a variety of synchronization primitives. The computation involved is shown to be closely re lated to parallel prefix evaluation.
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PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000. Codice articolo LW-9781332088713
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Efficient Synchronization on Multiprocessors With Shared Memory
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Paperback. Condizione: New. Print on Demand. This book delves into the abstract mathematical universe of read-modify-write (RMW) synchronization operations as a foundation for understanding efficient data processing in massively parallel computing systems. The author establishes a new and broad framework for representing RMW operations, a family of memory access operations used in computer architectures. The book extends a technique known as memory request combining, originally introduced in the NYU Ultracomputer, to arbitrary RMW operations. The author provides a formal correctness proof for this combining mechanism and analyzes its practicality across a wide range of memory access operations. This includes a variety of synchronization primitives, such as test-and-set, fetch-and-add, and more general data-level synchronization methods. The work also explores the close relationship between the combining mechanism and parallel prefix evaluation, a well-known computational problem. The book provides a firm foundation for understanding a family of efficient parallel processing techniques foundational to the construction of modern parallel computer architectures. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Codice articolo 9781332088713_0
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