Resource Management for Early Production Grids

This contribution presents the ongoing development of a resource manager for use in early production grids. Even though our main focus is to develop a stable brokering facility for current production grids, we also address features needed in further improved resource managers for future enhanced grid infrastructures. The primary target environment is the NorduGrid platform, comprising around 20 parallel systems in 5 countries, available for production grid jobs 24 hours a day. Application characteristics considered include serial, parallel, and coordinated multi-resource jobs running in sequence or in parallel, all types in either interactive or non-interactive mode. The brokering process aims to minimize the time to delivery for each individual job and is based on a number of new features including reservation capability, information about currently used or reserved capacity, benchmark-scaled time predictions, and queue adaptation capability. We present the basic motivations for all these features and discuss various issues regarding their implementations in the current grid environment.