:: European DataGrid Tutorial
[ All the slides for the EDG tutorial can be found
here.
]
This part of the curriculum will provide both an introduction
to some aspects of Grid Computing and to the Grid software that
has been produced within the EU DataGrid project (EDG). EDG has
as its aim to develop a large-scale research testbed for Grid
computing. The project is in its final phase and a testbed spanning
some ten major sites all over Europe has been up and running continuously
since the beginning of 2002. The tutorials will present the EDG
software architecture and discuss the interplay of basic grid
software (Globus, Condor), higher level EDG middleware, and application
software on the EDG testbed. Emphasis will be put on specific
middleware issues in job submission and data management as well
as on EDG's security architecture. In several exercises students
will learn how to use Grid tools for their distributed data or
computing intensive applications. In addition, two optional hours
of exercises will be proposed to students, focusing on network
performance aspects of the Grid. The topics covered follow.
Overview of Grid computing in general and the European DataGrid
project (EDG).
Security Issues and Overview of the EDG Testbed
Secure access to Grid resources is a major issue and one
of the first things a user has to deal with when starting to
use the Grid, i.e. the EDG testbed. A basic overview about current
security solutions in the EDG project is given. Furthermore,
EDG deploys a large-scale testbed that spans several sites at
various places all over Europe. Definitions are given about
what Grid services and resources are available and where they
can be used. A detailed overview about the testbed is given.
Job Submission / Workload Management
Most of the users of the EDG software interact with the
EDG software system by submitting their jobs (executable programs)
to a Resource Broker which does a matchmaking on available and
requested resources and then dispatches jobs to resources in
the testbed. This lecture provides background about the work
load management software system and details about how job submission
is done using the EDG software system.
Data Management
One of the main objectives of a Data Grid is the management
of large distributed data stores. This lecture gives an overview
about replica and meta data management as well as the software
tools provided by EDG to deal with data management problems.
Information Systems - Software Installation/Configuration
In a Grid environment, there are several hardware and software
resources that can be used by end users as well as Grid services
and applications. Information systems are used to keep track
of resources and also to monitor the current status. The EDG
solution is outlined in detail and how end user can interact
with it. The second part covers the first part of Software Installation/Configuration:
This lecture gives a very brief introduction to installation
and configuration of EDG software tools.
Software Installation/Configuration II - Applications on
the Grid
Second part of Software Installation/Configuration. In the
EDG project, three major application domains are supported:
High Energy Physics, Earth Observation and Biomedical Applications.
The talk gives a brief overview about these applications and
how they use and have used Grid tools.