Dear All, the GSA-RG would like to invite you to our session at GGF 16. Date: Tuesday, February 14, 2006 Time: 3:30 pm - 5:00 pm Location: Olympia B We are especially looking forward to see three presentations on state-of-the-art scheduling systems. These presentations will examine generic Grid scheduling requirements and will therefore also be of interest to groups like GRAAP or OGSA-RSS. Please find the respective abstracts below. I hope to see you in Athens. Best regards, Philipp. ABSTRACTS: ---------- 1. "Workflow Scheduling in the ASKALON Grid Environment" by Marek Wieczorek, University of Innsbruck The ASKALON Grid environment is a full Grid environment designed to compose and execute scentific workflow applications. The ASKALON scheduler is a dynamic scheduling service using different optimization techniques to maximize the user's profit in accessing the Grid. Pluggable architecture of the scheduler enables the user to apply different workflow scheduling algorithms, to apply advance reservations, and to consider different optimization criteria, among them execution time and economic cost. Acting as a part of a full Grid environment, the scheduler interacts with other components of the ASKALON, namely with the resource management, the enactment engine, the performance prediction and the monitoring services, trying to make scheduling decisions based on the most reliable and up-to-date information. Our goals are to make the service SLA-aware and to extend it in the directions recommended by the GGF community. Besides the functionality of ASKALON scheduler we will also reflect general requirements for a Grid scheduler. 2. "The VIOLA Meta-scheduling Service" by Wolfgang Ziegler, Fraunhofer SCAI Distributed applications or workflows usually require different specialised resources like compute nodes, visualisation devices, storage devices, or network connectivity with a defined QoS at the same time or within a given period of time to be executed successfully. Orchestrating such resources on a local level within one organisation is only a minor organisational problem. Orchestration of resources on a Grid level requires a service that is able to solve the same problems in an environment that probably stretches across several administrative domains. Additional conditions have to be taken into account, like site autonomy and different site policies. In this talk we first describe the environment where co-allocation of resources is of vital importance, the requirements for the MetaScheduling service that provides the required co-allocation means, and related work. In the next step we characterise the functionality of the MetaScheduling service, followed by the description of the current implementation. As a use case we show the integration of the scheduling system into the UNICORE Grid middleware and finally we present a new project based on this work that started end of 2005. 3. "GridWay Scheduling Architecture" by Ignacio Martín Llorente, Universidad Complutense de Madrid GridWay, on top of Globus services, enables large-scale, secure and reliable sharing of computing resources (clusters, computing farms, servers, supercomputers...), managed by different resource management systems (PBS, SGE, LSF, Condor...), within a single organization (enterprise grid) or scattered across several administrative domains (partner or supply-chain grid). GridWay is an open source meta-scheduling technology that performs job execution management and resource brokering, allowing unattended, reliable, and efficient execution of jobs, array jobs, or complex jobs on heterogeneous and dynamic Grids. GridWay performs all the job scheduling and submission steps transparently to the end user and adapts job execution to changing Grid conditions by providing fault recovery mechanisms, dynamic scheduling, migration on-request and opportunistic migration. The presentation describes the scheduling requirements for partner grid computing, the functionality provided by GridWay to meet those requirements, the GridWay scheduling architecture and finally its requirements on core Grid services for the implementation of such functionality.