LSF is a product that runs batch or interactive jobs, selecting execution hosts based on current load conditions and the resource requirements of the application.
Interactive jobs start running as soon as a command is entered.
Batch jobs are kept in queues until the appropriate resources are available. Hosts are divided in clusters. For AFS installations the authentication is based on Kerberos. In order to access files in AFS directories, a valid token must be held at the time of the submission. The token is transmitted and replicated in the execution node, and its lifetime is extended as necessary.