Reserving resources

About resource reservation
When a job is dispatched, the system assumes that the resources that the job consumes will be reflected in the load information. However, many jobs do not consume the resources that they require when they first start. Instead, they will typically use the resources over a period of time.
Use resource reservation
Memory reservation for pending jobs
By default, the rusage string reserves resources for running jobs. Because resources are not reserved for pending jobs, some memory-intensive jobs could be pending indefinitely because smaller jobs take the resources immediately before the larger jobs can start running. The more memory a job requires, the worse the problem is.
Time-based slot reservation
Existing LSF slot reservation works in simple environments, where the host-based MXJ limit is the only constraint to job slot request. I

Parent topic: Distributing job resources to users in LSF