... The pinhole simulation program is a computationally and memory intensive task. ... A parallel version was developed instead, to enable distributed processing on a cluster of workstations. The program makes use of the Message Passing Interface (MPI) standard for parallel processing, implemented as an API (Application Programming Interface) to the Local Area Multicomputer (LAM) programming environment developed at the Ohio Supercomputer Center. ...

Distributed Software for Observations in Near Infrared V. Gavryusev 1 and C. Baffa Osservatorio Astrofisico di Arcetri E. Giani Dipartamento di Astronomia, Universit`a di Firenze Abstract. ... The processes denoted for control of hardware (telescope and other instruments) should be executed currently on PC dedicated for this task under DESQview/X, while all other components (user interface, tools for the data analysis, etc.) can work also under Unix. ... 1993, Di Giacomo et al. 1993). ...

... You are here: start €Ё difx €Ё difxmpi . ... difx:difxmpi . The DiFX software correlator uses MPI for organizing the spawning of processes on different computers and for transmitting data from one process to another. MPI is used only for communication between mpifxcorr processes. ... MPI assigns each process that it starts an integer identifier (called rank) that is used to refer back to that process. ... A vast majority of known DiFX installations use OpenMPI (available at www.openmpi.org ). ...

The aim of this section of the course is to enable you to use simple computer programs to solve a variety of common astronomical tasks. ... I have (somewhat arbitrarily) decided to use Python for this course, because it seems to be gaining popularity fast for astronomical data handling, and because some of you will have encountered it at the ATNF course. ... We've put Python (plus all relevant libraries) on the Stromlo Linux computers moron and maggot. ... Now log in to moron (or maggot). ...

... Advanced Pick : Open Database and Operating System ~ Usually ships in 24 hours . ... Black Belt Client/Server Software Development; Building Open and Distributed Systems ~ Usually ships in 2-3 days . ... Change Management and the Momentum of Open Systems (Open Systems Business) ~ Usually ships in 2-3 days . ... Client/Server and Open Systems : Technologies and the Tools That Make Them Work ~ Usually ships in 2-3 days . ... Open Distributed Systems ~ Usually ships in 2-3 days . ...

... Posts tagged ?Pareto distribution? ... Posted by hlee . ... Tags: Classification , covariance , FARIMA , Fisher information , GL , GRB , Levy , light curve , limb darkening , ML , Pareto distribution , quasars , solar flare , standard candle , tessellation , time series , VO , void . ... 1 Comment . ... ArXiv] Pareto Distribution? ... 4 Comments . ... From arxiv/astro-ph, arXiv:0706.2590v1 Extreme Value Theory and the Solar Cycle by Ramos, A. This paper might drag a large attention from CHASC...

Hardware Structure CLOCKS BIASES SEQUENCER ADC DSP Communication Channel Data Channel FIBERLINK VME L C U Parallel-/ Serial-Port Host Computer SUN UltraSparc EDT DMA Board Hardware Structure CLOCKS BIASES SEQUENCER ADC DSP Communication Channel Data Channel FIBERLINK PCI-Bus Interface To RTC Host Computer Linux PC, 2+ CPU Physical Interfaces EDT DMA Interface Board plus Serial/Parallel Port Driver for data -channel delivered by EDT (Linux, Solaris) ... High processing speed requirements. ...

Communications between DF-224 and NSSC-I is via PITs (Processor Interface Tables) . ... SSM PIT tells NSSC-I about DF-224 and spacecraft . ... Maneuver request accepted . Maneuver information . Guide star information . SIC PIT tells DF-224 about SIs . ... Indicates that a payload safing has been initiated . ... DF-224 safes SIC and SIs if it does not receive PIT . NSSC-I safes SIs if it does not receive PIT . Previous slide . Next slide . Back to first slide . ...

Computers become more and more popular nowadays. That means that the amount of people who are able to work with computer programmes and play computer games has increased. In many cases computer games are the only thing that a person is accustomed to. ... As a result of this epidemic "homo playing" may put on the isoreality helmet which makes a person, crazy about games, forget about food, slumber and all other components of real life: "homo playing" becomes isolated from community. ...

... Stellar Evolution is driven entirely by the never ending battle between Pressure and Gravity . As imbalances are reached, the star is driven to find a new Energy source. ... Pressure and gravitational forces are equal, the star is stable and its core is sufficiently hot to fuse Hydrogen into Helium More about main sequence stars . ... The luminosity generated by the core fusion of Helium into Carbon is far greater than the shell luminosity associated with the fusion of Hydrogen into Helium. ...

... Two computers in the same network are usually linked via a single physical cable. When they communicate over the network, the programs in each computer that take part in the communication are linked via a virtual connection , a sort of imaginary cable. ... When it notices an incoming network login (i.e., it notices that it gets a new virtual connection to some other computer), it starts a new process to handle that single login. ...

... XmTel is a telescope control interface designed to to communicate with Elwood Downey's XEphem. It will also operate as a free-standing program for control of telescopes that use the NexStar, LX200 or RCOS command sets. XmTel is accompanied by routines which support the necessary communication and commands for running Meade Instruments LX200, Celestron NexStar telescopes. A version for RC Optical Systems Professional Series mounting is available from the manufacturer. ...

... The ESO-MIDAS system is built along lines which should allow easy integration of complex analysis algorithms as well as allowing greater flexibility in interactive use and in the creation of user specific procedures from the basic building blocks. The first design proposal for ESO-MIDAS, made late 1980, used some ideas from the UK STARLINK project for the software interface definitions. ... It consists of the following three parts, the monitor, the applications, and the interfaces. ...

As it was already mentioned, the idea behind File Juggler is rather simple: using CGI scripts as processing tools and WWW browser as user interface, display the structure and content of typical anonymous FTP server in a convenient, easily navigated form. ... My P5-133 spends about 0.025 ms on one file when doing linear search with simple criterion (690 ms for 27,000 files, search for substring among file names/descriptions with 70 hits). ... Let's now look whether we can handle 1,000,000 files. ...

A very important stage in a story of formation of any new science is the shift from discussion of situation which are possible but do not occur in practice due to some reason to recognition of real phenomena of interest. ... We suggest to consider computer viruses as this new specific form of life which is coming in the contact with our form of life. ... Computer life has been created by human being, the role of independent evolution of computer viruses seems to be still negligible. ...

Modern requirements stipulated for the Networking Technologies . Brief Review of the problems under solution. ... Distributed Collapsed Back Bone Technology Advantages and shortcomings of different approaches. Switches against routers. ... Position at the IS market. Position of the modern high-speed technologies. ... Review of switching technology. Review of the switch market.Classification of switches. ... Big corporate networks implementing switching and routing technologies. ...

... You will receive requested data by conventional or electronic mail according to your preference. ... AHMEDABAD ALBUQUERQUE ALERT ALMA ATA 806M ALMA ATA 3340M APATITY ATHENS BAGNERES BEIJING BEIRUT BERGEN BERKELY BRISBANE BUENOS AIRES CALGARY CAPE SHMIDT CASEY CHACALTAYA CHICAGO CHURCHILL CLIMAX COLLEGE CORDOBA DALLAS DEEP RIVER DENVER DOURBES DARMSTADT DOURBES DURHAM ELLSWORTH FREIBURG FUKUSHIMA GOOSE BAY GOTTINGEN HAFELEKAR HALEAKALA HALLE HEISS IS. ...

... Computing the pointing error . ... The platform can be rotated by pulling on the tie downs or redistributing weight on the platform. ... The horn rotates through the same angle as the platform. ... The plots show the computed pointing error for different platform rotation angles (.ps) ( .pdf ): . This shows the pointing error in as you tilt the platform. ... B2209+080 has the pointing errors with no tilt. ... The computed pointing error for a platform tilt track the measured errors pretty well. ...

SPECIALIZED COMPUTER SYSTEMS FOR MATHEMATICAL MODELING OF DISCRETE POINT STRUCTURES READOUT PROCESS Aleksandr Reznik, Andrey Torgov, Aleksandr Soloviev Institute of Automation and Electrometry, Siberian Branch, Russian Academy of Sciences The paper describes the specialized software systems that have been used to solve difficult mathematical problems in digital images processing. ... Systems for the first computers based on FORTRAN. ... Systems based on Matlab special environment. ...

... Ten thousand years ago, before the dawn of recorded human history, a new light must suddenly have appeared in the night sky and faded after a few weeks. ... Just after the Moon set but before the Sun rose in the early morning hours of August 12, meteors pelted the Earth from the direction of the constellation Perseus, while ions pelted the Earth from the Sun. ... New images of Titan's surface were released last week from the Canada-France Hawaii Telescope featuring the finest details yet resolved. ...