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Hardware Support for Collective Communication Operations

Hebrew University of Jerusalem. Department of Computer ScienceLarry Rudolph

出版	Leibniz Center for Research in Computer Science, Department of Computer Science, Hebrew University of Jerusalem, 1992
URL	http://books.google.com.hk/books?id=9zPyHAAACAAJ&hl=&source=gbs_api

註釋Abstract: "We describe the design of a communications board that supports collective communications operations of parallel programs. Each cluster of processors are interconnected by a bus and connected to the communications board. The communications boards are, in turn, connected to a low latency, high bandwidth, slow configuration time crossbar network. The design is geared towards low-end (inexpensive) parallel computer architectures. Such an architecture is motivated by recent advances in parallel programming models and in particular by the 'loosely synchronous' style of parallel programming. Subgroups of processors alternatively perform local work with collective communication operations. This allows time to reconfigure the large crossbar and enables communication between processors without interrupts. The important broadcast, scatter, gather, and transpose operations can be efficiently supported."