Veckoblad om forskning, undervisning och administration m.m.
NADA - Institutionen för numerisk analys och datalogi, KTH
cd; cp /usr/local/etc/nadaskel/examples/.xmodmaprc .
Systemgruppen via Peter
Konferens: NWPT'97. 9th Nordic Workshop on
Programming Theory. 15-17 oktober i Tallinn.
us/nwpt97/ Numeropärmen 97.099
Pengar: Sök pengar för att förbättra utbildningen. Högskoleverket. Sista ansökningsdag är den 15 oktober. Numeropärmen 97.100
Pengar: Stipendier och anslag från Frans Georg och Gull Liljenroths stiftelse. Ansökan senast den 1 oktober. Numeropärmen 97.101
Stipendier: Svenska Institutets katalog "Stipendier till utlandet" finns att läsa. Numeropärmen 97.103
This seminar presents an interview study of personal home pages on the Web; what information is included, how it is presented, what information people find useful on other person's home pages etc. The results show that, in many ways, personal home pages can be of use in, or even seen as a simple version of, a knowledge net.environment.
According to Feigenbaum the percieved size of the moon depends on its elevation over the horizon and the landscape illuminated by it. For instance, in the mountains or at sea it is never very large, but in a park or in a garden it may seem large when it stands low.
Feigenbaum hypothesises that the reason for this discrepancy between percieved size and real size is that the brain may process visual information either in planar or in angular mode. A successful perspective induces us to see a painting in angular mode, although the physical surface of the canvas should of course be represented in planar mode. This effect could work the other way around, such that a landscape illuminated by the moon is processed in planar mode. If, in addition, the brain thinks that the image of the moon is circular while in fact it is slightly elliptic, processing in planar mode may lead to a very large moon.
The image of the moon is indeed slightly elliptic, more so at low elevations, as an effect of differential diffraction of light rays passing through the atmosphere.
The aim of this talk is to go through the computations of Feigenbaum and present his estimates on how large a large moon can be, in the hope of stimulating someone to do experiments on this aspect of human visual perception.
KeLP: "A Retargetable Infrastructure for High Performance Scientific Applications".
Room 1635, Osquars backe 2, 6th floor, Thursday September 18, 14.15--16.00
Scott B. Baden*, Associate Professor, Department of Computer
Science and Engineering, University of California at San
Diego, Senior Fellow, San Diego Supercomputer Center,
The KeLP infrastructure is a set of C++ class libraries designed to reduce the development time of various irregular scientific computations running on distributed memory parallel computers.
Most KeLP applications have a layered design, in which a domain specific library, specialized to the application, is constructed on top of KeLP. KeLP's provides only seven core abstractions abstractions. Four of them are hardware independent; the remaining three may be _retargetted_ according to the specifics of data motion within the underlying hardware.
I will discuss the basic KeLP model, a domain specific library, and an example of how we re-targeted KeLP to multi-tier execution on clusters of symmetric multiprocessors.
(*) This Research is currently supported by the U.S. National Science Foundation (NSF) and a U.S. Dept of Energy Computational Science Graduate Fellowship. KeLP is part of the Common Adaptive Run Time Environment (CARTE) which is to be funded by the NSF under the auspices of the National Partnership for Advanced Computational Infrastructure, a partnership of research institutions, with headquarters at UCSD.
The present generation of Fujitsu VX/VPP vector computers
gives with its implementation of the vector technology in CMOS
a very competitive price/performance ratio for many scientific
and technical applications. PDC has 2 processor Fujitsu VX
system with a total peak performance of 4.4 GFlop/s. A
presentation of the system can be found at
13.30 - 14.30 The Future of Vector Parallel Systems M.Takamura Gen Mgr Dev
14.30 - 15.30 Solving Chemical Problems Using Vector Systems Prof.J.Clarke
15.30 - 16.30 Computational Chemistry at Fecit Dr R. Nobes
(45mins presentation + 15 mins Q&A)
Mr Moriyuki Takamura graduated from the Dept. of Electronics,Waseda University,Japan,in 1970 as a Bachelor of Science, he then joined Fujitsu Limited and was engaged in designing the company's general purpose mainframes and also the vector processors (VP's).
Since 1988 he has been directing the development of vector parallel processors (VPP's)as the General Manager of the 1st Development Division of the High Performance Computing Group.
Julian H.R. Clarke was appointed Professor of Computational Chemistry at UMIST in 1992. He has published over 130 scientific papers concerned with the properties of liquids, solids, solutions, interfaces and colloids. He is currently Chairman of the Statistical Mechanics and Thermodynamics Group of the Royal Society of Chemistry and also Chairman of the Fujitsu Supercomputer User Group.
Ross Nobes is research fellow at Fujitsu European Centre for Information Technology Ltd (FECIT).
More information: check out
p://www.pdc.kth.se/news/events/events.html or call
Upp till Numeros hemsida.
Senast ändrad 11 september 1997
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