Download Algorithms for Parallel Processing by Vijaya Ramachandran (auth.), Michael T. Heath, Abhiram PDF

By Vijaya Ramachandran (auth.), Michael T. Heath, Abhiram Ranade, Robert S. Schreiber (eds.)

ISBN-10: 1461271754

ISBN-13: 9781461271758

This IMA quantity in arithmetic and its functions ALGORITHMS FOR PARALLEL PROCESSING is predicated at the court cases of a workshop that was once an essential component of the 1996-97 IMA software on "MATHEMATICS IN HIGH-PERFORMANCE COMPUTING. " The workshop introduced jointly set of rules builders from concept, combinatorics, and clinical computing. the themes ranged over types, linear algebra, sorting, randomization, and graph algorithms and their research. We thank Michael T. Heath of college of lllinois at Urbana (Com­ puter Science), Abhiram Ranade of the Indian Institute of expertise (Computer technology and Engineering), and Robert S. Schreiber of Hewlett­ Packard Laboratories for his or her very good paintings in organizing the workshop and modifying the complaints. We additionally take this chance to thank the nationwide technological know-how Founda­ tion (NSF) and the military study place of work (ARO), whose monetary help made the workshop attainable. A vner Friedman Robert Gulliver v PREFACE The Workshop on Algorithms for Parallel Processing was once held on the IMA September sixteen - 20, 1996; it used to be the 1st workshop of the IMA yr devoted to the maths of excessive functionality computing. The paintings­ store organizers have been Abhiram Ranade of The Indian Institute of Tech­ nology, Bombay, Michael Heath of the college of Illinois, and Robert Schreiber of Hewlett Packard Laboratories. Our suggestion was once to assemble researchers who do cutting edge, intriguing, parallel algorithms learn on a variety of themes, and through sharing insights, difficulties, instruments, and strategies to benefit anything of price from one another.

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1. 7. Protocol optimizations. Another important issue is how each protocol interacts with the system on which it is implemented. Several system aspects can influence performance substantially and change the tradeoffs in protocol design. , interrupts, network latency and bandwidth, etc. When a protocol is designed for a specific system, these issues need be taken into account. 2. Protocol implementation. This section presents the specific choices made in our implementation of HLRC across SMP nodes.

The second graph presents the barrier cost for various numbers of processors and write notices. 34 ANGELOS BILAS ET AL. 5. Micro-benchmark analysis. To understand the costs of the basic protocol and synchronization operations in this complex system, and to gain confidence in the simulator, we use a set of micro-benchmarks. These measure: • The time to fetch a page, including the request message, the page transfer itself, and the handlers at both ends. • The cost to acquire a lock for different numbers of competing processors, page fetches (misses) in the critical section, and write notices created in the critical section.

Table 1 and Figures 9 and 10 can be used to characterize the applications. Table 1 presents counts of protocol events for each application, for 1-, 4- and 8-processors per node configurations. Figures-9 and 10 show for the same configurations the numbers of messages and MBytes of information (both data and protocol) that are sent by each processor in the system. These statistics are normalized to the compute time of each application (per 107 cycles). All the numbers presented are averages over all processors in the system.

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