As the Virtual Resource Manager (VRM) is a novel
Grid management system it is designed to overcome limitations of
todays Grid environments. While the main features of the VRM are
runtime responsibility, resource virtualization, information hiding,
autonomy provision and smooth integration of existing resource
management systems, the design of the VRM has its focus on providing
flexibility, transparency and reliability. To meet these goals
the VRM integrates Service Level Agreements (SLA) as the main instrument.
VRM is a domain based Grid resource management system and integrates
different local resource management systems (RMS) using Active
Interface (AI) technologies. Responsible for building up several
management domains is the Administrative Domain Controller (ADC)
as the central management component of the VRM architecture.
The VRM architecture introduces resource virtualization in an
enhanced way by combining different distributed resources of the
same resource type to provide these sites as a single resource,
covering all challenges, e.g. failures of local resources and communication
behaviour between the different sites. Additionally the VRM manages
arbitrary types of resources, e.g., cluster systems, parallel computers,
but also networks, disk space or other special equipment and their
combinations. It also covers the areas of software resources, information
resources, or even human resources.
To provide the level of reliability which is needed for future
Grid applications and confirmed by SLA the VRM makes heavily use
of advance reservation of all of the resources, but it is not limited
to local RMS providing advance reservation support.
For all of our research interest in future Grid applications,
advance reservation, service and information providing, co-allocation
and workflow management, the VRM provides the feasible environment.
The VRM is an ongoing project in cooperation with the Paderborn
Center for Parallel Computing. Together with Prof.
César De Rose (PUCRS Porto Alegre, Brazil) we operate
an international Grid test bed based on the VRM. Furthermore
it is also the proposed platform for the Berlin-Brandenburg-Grid