... 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. ...