portal implementation experiences in venezuela

II Latin American Grid Workshop, I Latin American EELA Workshop andII Latin American Grid Workshop, I Latin American EELA Workshop andI Latin American EELA Tutorial. Mérida (Venezuela), April 24- 29, 2006.I Latin American EELA Tutorial. Mérida (Venezuela), April 24- 29, 2006. J. GonzálezJ. González, , C. Mendoza, R. León.C. Mendoza, R. León.

Portal Implementation Experiences in Venezuela

IVICIVIC ULAULA USBUSB


Table of Content

• Introduction to the used technologies (Concepts)

• The original application

Usage approach

Advantages/Disadvantages

• The early version (PHP)

• The portlet based application (JSR 168)

Usage approach

Advantages/Disadvantages

• The next generation (GRID)

• Conclusions

• Questions


The original application: model of use


AUTOSTRUCTURE is an updated and extended version of the atomic structure code SUPERSTRUCTURE, widely used by the international community of atomic physics, astrophysics, plasma physics, laser physics.

1. Download the software

2. Configure the parameters

3. Compile the application

4. Create the input file

#: ./autos.x < file.in


The original application: advantages and disadvantages


AdvantagesAdvantages

• Fully controlled by the user.• Source code available for modifications.• Shell speed.

DisadvantagesDisadvantages

• Difficult to learn and configure.• Related to user hardware limitations.• Primitive user interface.• Locally accessible.• Unfriendly input/output files.• Centralized data administration…


The early approach: PHP version


1. Download the software

2. Configure the parameters

3. Compile the application

4. Create the input file


The portlet based application: JSR 168


• OO design and implementation.

• PHP code to JSP and Java.

• JSR 168 Compliant.


The portlet based application : advantages and disadvantages


AdvantagesAdvantages

• Easy to learn and use (reduce the learning curve).• No configuration required.• Massive resources.• Globally accessible.• Friendly set up of input files.• Organized results table (output files).• Remote and distributed data administration.• Permanent data storage.

DisadvantagesDisadvantages

• Change resistant (many traditional user)


The next generation: GRID


• GSI authentication:GSI authentication: is a specification for secret, tamper-proof, delegable communication between software in the grid computing environment.

• GRAM job execution:GRAM job execution: t the Grid Resource Allocation and Management (GRAM) service provides a single interface for requesting and using remote system resources for the execution of "jobs".

• GridFTP file transfers:GridFTP file transfers: is a high-performance, secure, reliable data transfer protocol optimized for high-bandwidth wide-area networks.


Portal Implementation Experiences in VenezuelaThe Application: AutoStructure Online

AutoStructure OnlineAutoStructure Online

FeaturesFeatures

• GridSphere 2 (gsPotal 0.9)• JSP (Java Server Pages)• JDK 1.5• Tomcat Server 5.5• Apache Ant 1.6.5• Maven 1.0.2• MySQL 4


Portal Implementation Experiences in VenezuelaConclusions

• The complexity of the modern Grid computing paradigm implies we have to stop reinventing common solutions.

• Portlets provide reusable code that can be shared between various organizations.

• Portals provide an understandable and usable high level environment for end users of any discipline.

• GridSphere provides a portlet model that facilitates the fast development of new portal features.

• Portlet developers can focus on delivering end functionality instead of low level details.


Questions?Questions?

portal implementation experiences in venezuela

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