Download Computer Simulation Studies in Condensed-Matter Physics VI: by D. P. Landau, K. K. Mon, H.-B. Schüttler (auth.), Professor PDF

By D. P. Landau, K. K. Mon, H.-B. Schüttler (auth.), Professor David P. Landau Ph. D., Professor K. K. Mon Ph. D., Professor Heinz-Bernd Schüttler Ph. D. (eds.)

Computer Simulation experiences in Condensed-Matter Physics VI presents a extensive evaluation of modern advancements during this box. in response to the final workshop, it offers invited and contributed papers which describe new actual effects, simulational options and methods of examining simulational info. either classical and quantum platforms are discussed.

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Extra resources for Computer Simulation Studies in Condensed-Matter Physics VI: Proceedings of the Sixth Workshop, Athens, GA, USA, February 22–26, 1993

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I I~ •' •" , II "• •I f ' I \ \ / .... I ........... I I t , ... - , , \ \ , ''''''"1'", 1" t'" ', ... . · -1, ..... , 1 I I", "1"" \ \ I I t . f ' l t l . , II '"" III " .. " " \ \ "''' .. '1', ,# ... ,'" '" """ .. '. , . · · • • ' . ' •• 1 f", f '. · . · II " I I . ' ' J~'~----~' ;--"'\'" I~~"\\\' I .... . . . . . . . . . , , ,. - ...... \ I " '" "~-----""', .. , l~----"\\" ",/;,---,~ ",,~~, ........ - - •• '\"II""',~ -- - I~_~_'~"\"\I r "I"~"--~'\ 1 ... - - - - - - · · · · · , · · , •.

In Figure 6a and b we show flow fields in a granular assembly at fixed wand two values of a. Note that the flow in the system with a = 0045d is confined to the upper portion of the assembly. 2d) has a current which fills the entire bed. Moreover, the current about each vortex J is nearly twice as large. To quantify this variation with the parameters controlling the vibrations, we computed J for a broad range of a and w. Some results of this analysis are shown in Fig. 7 for w/27r = 004(g/d)1/2 and various a.

T times Oil the Cray-YMP /8 varied c0nsiderable when the programs were run in a batch environment. In fact, we found cpu times to differ by factors of up to three when using the above programs. Basically, the results depend upon how many processors are available to work on any given job, how much memory other jobs using the system require, and how efficient the operating system is at making use of idle resources. It is possible to reduce these fluctuations in the timing results by making use of compiler options which limit the number of cpus working on that job.

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