Speaker
With a forward look to future evolution, discuss the issues you have encountered (or that you expect) in using the EGEE infrastructure. Wherever possible, point out the experience limitations (both in terms of existing services or missing functionality)
Future evolution are related to the possibility of integration
between different
discovery and composition method into the infrastructure. An
example is the
use of gLite service discovery library that in its scope has the
development of
different plug-ins able to interact with different front-end. By
maintaining the
UDDI registry as a mechanism for registering web services
application, it may
be used by other grid components. Moreover an enhanced semantic
registry
may be established for automa
Describe the added value of the Grid for the scientific/technical activity you (plan to) do on the Grid. This should include the scale of the activity and of the potential user community and the relevance for other scientific or business applications
By starting from the inherent distributed nature of such
information, the
potential user community is the INAF scientists which work in
different ways on
the data in the databases. They have to extract useful
information with several
queries and retrieve requests, since they search for the “best”
data. This
operation may include a comparison between different sources
(i.e. different
observations stored in time and period of the same sky’s
portion). Otherwise
they elaborate images to refine and extract information following
a pre-
determined schema (pipeline). Finally data are processed by using
different
software programs (all running on Linux-compliant platform).
Moreover data
may not be always public available since each institution that
owns them may
put restrictions. The implementation of a security infrastructure
like the grid
ones may take account of these requirements and provide a
mechanism to set
rights and privileges for different users. The added value of the
grid is having a
Describe the scientific/technical community and the scientific/technical activity using (planning to use) the EGEE infrastructure. A high-level description is needed (neither a detailed specialist report nor a list of references).
The INAF VO collects individuals and institute that compose the
Italian National
Institute for Astrophysics. Projects and research in this area
involve the use of
a grid computation system in order to exploit the data and
computational
facilities of such an infrastructure. Astronomers deal with a
massive amount of
data both textual data and binary data (i.e. images and spectra)
coming from
celestial bodies observations made with ground or spatial
telescopes. Such
information is stored worldwide
Report on the experience (or the proposed activity). It would be very important to mention key services which are essential for the success of your activity on the EGEE infrastructure.
Practical experiences regard the deploying and managing of web
applications
and web services application in an EGEE-compliant grid
infrastructure. The work
deal with the development of a set of web services performing the
different
tasks. By starting from services interacting with database, some web
applications have been developed. Essentially based on the Java
platforms
(java web services), they may be easily deployed on the
application container
(Tomcat) present on grid nodes (i.e. the Computing Element), but
problems
were outlined in their use. The main problems encountered from
the “application layer” point of view according to grid
infrastructure, and in the
optics of a decentralized management of resources are discovery
of such
resources and inherent security issues. By considering such web
applications
like resources to be shared by the VO, difficult is in having an
appropriate and
exhaustive resource schema and encoding mechanism for such
“software” grid
resources. According t
