seminario

Why is important?Why is dificult?How resolve it?

CINVESTAVCOMPUTER SCIENCE DEPARTMENT

Distribuited Visuals objectsDirector: Doc. Sergio Chapa Vergara.

Co-Director: Doc. Amilkar Meneses Viveros.

Laura Patricia Ramırez Rivera Distribuited Visuals objects


1 Why is important?

2 Why is dificult?

3 How resolve it?



Why is important?

The use of the video wall is important because isa necessary tool for the scientific computing.



What is a video wall?

The video wall is a tool that provides highresolution and parallel processing.



Where is used it?

The videoWall is serving as a visual analytics

research space with applications in:

Earth systems science

Chemistry

Astrophysics



Where is used it?

Medicine

Forensics

Art

Archaeology

While enabling fundamental work in computergraphics, visualization, networking, datacompression, streaming and human-computerinteraction.



Some examples of its use are

Collaborative Visualization using High ResolutionTiled Displays [University of Illinois at Chicago]It will allow local and distributed groups of researchers to work together onlarge amounts of distributed heterogeneous datasets.

Figure: Ref. http://www.evl.uic.edu/




From working with our collaborators at the US

Geological Survey and the National Center for

Microscopy and Imaging Research, we have seen

how high resolution displays can be used to show

detail and context simultaneously.




Goddard space flight center [Nasa].Twenty satellites currently observe the Sun and measure the impacts ofsolar events on Earth and other solar system bodies

Figure: The Advanced Computing Center for the Arts and Design




Burlington COMPASS Intelligent Traffic System,Canada [comercial solution]It enables operators to detect traffic slowdowns, disabled vehicles andcollisions, resulting in a reduction in traffic congestion, accidents, anddelays in the Skyway corridor.



Why is dificult?

Distributed data management and processingrequires a complex development.



What is the problem to resolve?

We need to do a good handler for the video wall.



A middleware

A middleware is a layer between applications andoperating system [Coulouris et al] .



A middleware

In this case, the middleware looks like this.



Middleware tasks

Object model support.- Abstraction, modularity, encapsulation,hierarchy

Operational interaction.- Operational interaction between two objects.

Remote interaction.- Interaction between two objects located indifferent address spaces.

Distribution transparency.- Interaction between objects is identical forboth local and remote interactions.



Object model support, Operational interaction, Remoteinteraction

The concepts of an object model ideally reflect the characteristics ofdistribuited systems[Arno et al] .



Distribution transparency

The concepts of an object model ideally reflect the characteristics ofdistribuited systems.



How resolve it?

We need find the best distribuited objects model for to do the handler forthe video wall.

CORBA

JVM (RMI)

Objetive-C

With Proxy



CORBA

The object model differentiates between object semantics and objectimplementation. The main component is the Object Request Broker(ORB), which functions as a software bus.



RMI

Java relies heavily on Java Object Serialization, which allows objects to bemarshaled (or transmitted) as a stream. Since Java Object Serialization isspecific to Java, both the Java/RMI server object and the client objecthave to be written in Java.



With Proxy

When a client is linked to a distributed object, an implementation of theobject interface, called a proxy, is responsible for organizing theinvocations[Tanenbaum et al] .



Objetive-C

Distributed objects operates by having the server process vend, or makepublic, an object to which other client processes can connect. Once aconnection is made, the client process invokes one of the vended objectsmethods as if the object existed in the client process.



[Chris et al ] IT Architectures and Middleware: Strategies for BuildingLarge, Integrated Systems, Chris Britton, Peter bye, chapter 3, pages39-50.

[Arno et al] Distributed Systems Architecture: A Middleware ApproachArno Puder, Kay Romer, Frank Pilhofer, chapter 2, Pages 16-30.

[Tanenbaum et al] Distributed Systems: Principles and Paradigms /Edition 2 by Andrew S. Tanenbaum, Maarten Van Steen, Maarten vanSteen, chapter 10, Pages 443-446.

[Coulouris et al] Distributed Systems: Concepts and Design , GeorgeCoulouris , Jean Dollimore, Tim Kindberg, chapter 5, Pages 156-163.

[NASA] http://www.nasa.gov/centers/goddard/home/

Electronic Visualization Laboratory, University of Illinois at Chicagohttp://www.evl.uic.edu/

[comercial solution] http://controlrooms.christiedigital.com/


seminario

Education

object semantics

handler forthe video

object request brokerorb

use arefrom

advanced computing center

trac slowdowns

trac congestion

middlewarea middleware