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By David M. Nicol, Michael Liljenstam, Jason Liu (auth.), Peter Kemper, William H. Sanders (eds.)

We are happy to provide the complaints of functionality instruments 2003, the thirteenth foreign convention on Modelling innovations and instruments for laptop functionality overview. The sequence of instruments meetings has supplied a discussion board for our group of functionality engineers with all their varied pursuits. instruments 2003, held in Urbana, Illinois in the course of September 2–5, 2003, was once the newest assembly of the sequence, which some time past has been held within the following towns: 1984 Paris 1992 Edinburgh 2000 Chicago 1985 Sophia-Antipolis 1994 Vienna 2002 London 1987 Paris 1995 Heidelberg 2003 Urbana 1988 Palma 1997 Saint Malo 1991 Turin 1998 Palma TheproceedingsoftheTOOLSconferenceshavebeenpublishedbySpringer- Verlag in its LNCS sequence on account that 1994. TOOLS2003wasthesecondconferenceintheseriestobeheldinthestateof Illinois, united states. It was once one in all 4 part meetings that met jointly below the umbrella of the 2003 Illinois Multiconference on size, Modelling, and evaluate of Computer-Communication platforms. different meetings held inconjunctionwithTOOLS2003werethe10thInternationalWorkshoponPetri Nets and function versions (PNPM 2003), the foreign convention at the Numerical answer of Markov Chains (NSMC 2003), and the sixth Inter- tional Workshop on Performability Modeling of laptop and communique platforms (PMCCS-6). The structure allowed for a few joint elements within the courses: the 3 keynote audio system, the device demonstrations, the tutorials, and the social occasions have been all shared by means of the contributors of the multiconference. in addition, the PNPM, instruments, and NSMC tracks of the multiconference ran simultaneously, in order that attendees may perhaps decide to attend whichever periods of these part meetings they wished.

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Read Online or Download Computer Performance Evaluation. Modelling Techniques and Tools: 13th International Conference, TOOLS 2003, Urbana, IL, USA, September 2-5, 2003. Proceedings PDF

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Additional info for Computer Performance Evaluation. Modelling Techniques and Tools: 13th International Conference, TOOLS 2003, Urbana, IL, USA, September 2-5, 2003. Proceedings

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Figure 6 shows the latency for different number of segments. Here each segment is of equal size. In the graph, the total message size (sum of size of all the segments) is plotted on the x-axis and time taken for the latency test is plotted on the y-axis. Note that each data segment has to be copied to the HCA through DMA. Hence as the number of segments increases, the number of DMAs increase. Therefore the performance of PCI and the corresponding chipsets are also major components in the impact of multiple data segments.

Hielscher and R. German pulses corrected by dynamic PPS ECHO feedback against the averaging interval τ . Both axes are scaled logarithmically. The measurement process took 24 hours. All timestamps were compensated for the systematic frequency errors by using linear regression over the whole measurement period. While using the ECHO feedback improves the time deviation for small averaging periods to some extent, a careful selection of the averaging interval τ is crucial to the accuracy of the system.

Work Request Processing Operations: Work Requests are used to submit units of work to the Channel Interface. Some types of work requests are Send/Receive, RDMA read/write, and Atomic operations. A work request usually triggers communication between the participating nodes. The results from a Work Request operation are placed in a completion Queue Entry. This result can be retrieved by polling the completion queue. We measure the cost of work request operations, polling on completed work request operations, and polling on pending work request operations (empty CQs).

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