Speakers
Mr
Jose Luis Vazquez-Poletti
(Universidad Complutense de Madrid (Spain))Mr
Rafael Gil-Herrera
(Universidad Complutense de Madrid (Spain))
Description
The EGEE project has created the largest production-level Grid
infrastructure in the world, which provides a level of
performance and
reliability never achieved before. The efforts made in the
project
includes a wide range of activities from the deployment and
management
of this vast infrastructure or middleware development, to
user training.
Among them, application porting is of crucial interest to
the scientific
community. In this context, we have seen a proliferation of
web portals
and ad-hoc middleware developments to ease the use of Grid
by different
scientist communities. However the actual infrastructure
lacks of a
common, consistent and general application development
framework.
The use of standard Grid Application Programming
Interfaces (APIs)
could aid the rapid development and distribution of
applications across
the Grid. Moreover, the use of a standard API will help new
users to
port their applications to an unfamiliar environment; and
will minimize
the impact of the modifications on the EGEE middleware, as the
interfaces would remain unchanged.
In this sense, the Distributed Resource Management
Application API
(DRMAA) GGF specification constitutes an homogeneous
interface to
different Distributed Resource Management Systems (DRMS) to
handle job
submission, monitoring and control, and retrieval of
finished job
status. The DRMAA standard represents a suitable and
portable framework
to express scientific distributed computations. Also, DRMAA
could reduce
the application development cycle. A Grid application could be
developed, tested and debugged using the organization local
cluster
-DRMAA implementations includes Condor, SGE and PBS- and
then executed
on the EGEE Grid using the GridWay Metascheduler.
In this demonstration we will show how to use DRMAA to
develop Grid
applications. As an example we will consider a Fusion Ray
Tracing
application, part of the NA4 Fusion activities. In
particular, we will
use the DRMAA C and JAVA implementations provided by
GridWay, and
resources from the Fusion VO. GridWay is an open-source
meta-scheduler
which gives end users, application developers and managers
of Grid
infrastructures a scheduling functionality similar to that
found on
local DRMS. Additionally, we will show in this demonstration
GridWay
scheduling and resource management functionality, and
command line
interface.
Primary authors
Dr
Eduardo Huedo
(Universidad Complutense de Madrid (Spain))
Dr
Ignacio M. Llorente
(Universidad Complutense de Madrid (Spain))
Mr
Jose Luis Vazquez-Poletti
(Universidad Complutense de Madrid (Spain))
Mr
Rafael Gil-Herrera
(Universidad Complutense de Madrid (Spain))
Dr
Ruben S. Montero
(Universidad Complutense de Madrid (Spain))
