Speaker
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 GridWay Metascheduler is a Globus project that performs job
execution
management and resource brokering, allowing unattended, reliable,
and
efficient execution of jobs, job arrays, and workflows on
heterogeneous and
dynamic Grids. GridWay is completely functional on EGEE, being
able to
interface with its computing, file transferring and information
services. The
demonstration will mainly show the functionality provided by
GridWay to port
scientific production codes to EGEE.
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
GridWay provides the following benefits to the different
stakeholders involved
in a Grid environment. For project and infrastructure directors,
GridWay is a
community project, adhering to Globus philosophy and guidelines for
collaborative development. For system integrators, GridWay is
open-source
software, released under Apache license v2.0. For system
managers, GridWay
gives a scheduling framework similar to that found on local DRM
systems,
supporting resource accounting and the definition of scheduling
policies, with
minimum installation requirements, being compatible with a wide
variety of
platforms. For application developers, GridWay implements the OGF
standard
DRMAA API (C and JAVA bindings), assuring compatibility of
applications with
LRM systems that implement the standard, such as SGE, Condor,
Torque… For
end users, GridWay provides a LRM-like CLI for submitting,
monitoring,
synchronizing and controlling jobs.
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.
The demonstration will show the main functionality provided by
GridWay,
focusing on its support for the execution of typical execution
profiles, namely:
embarrassingly distributed, master-worker and workflow. GridWay
is being
successfully used in the NA4 Fusion activities and is being
evaluated in other
VOs, such as BioMed.
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)
GridWay provides a lighter-weigh alternative to the resource
brokers available
in EGEE (gLite-WMS and LCG-RB), offering additional application
porting
functionality and higher performance for given execution
profiles. GridWay
exhibits shorter scheduling latencies as it reduces the number of
submission
stages and provides mechanisms, such as opportunistic migration and
performance slowdown detection, that improve the usage of the
underlying
resources.
