Patent ID: 8572253

Claim:
A method of managing reservations in a multi-node compute environment, wherein users submits jobs to the multi-node compute environment for consuming compute resources in the multi-node compute environment according to a workload manager that establishes, at a first time, a reservation of compute resources in the multi-node compute environment for use by a job at a second time which is later than the first time, the method comprising: establishing a reservation mask for maintaining a guaranteed service level for first compute resources based on a request from a customer for compute resources within the multi-node compute environment, wherein the reservation mask slides a specified period of time ahead of a current time; making assignments of second compute resource requests to the reservation mask, wherein the second compute resource requests are permitted to access compute resources associated with the reservation mask; and modifying, based on information associated with the reservation mask, at least one of the specified period of time and the assignments.