If node-locked, the per node license count should be associated with each compute host (or globally using the DEFAULT node). If floating, the total cluster-wide license count should be associated with the GLOBAL node. In all cases, this is accomplished by associating the license with a node using the GRES (or generic resource) attribute. 13.7.2.1 Local Consumable Resourcesīoth node-locked and floating licenses can be locally specified within Moab using the NODECFG parameter.

These methods include locally specifying consumable generic resources, obtaining consumable generic resource information from the resource manager, and interfacing directly with a license manager. Moab can use one of three methods to determine license availability. Thus, two licenses spelled the same with different capitalization are still recognized as the same license, and are thus invalid.ġ3.7.2 Controlling and Monitoring License Availability Identical licenses, regardless of case, are invalid because case recognition is insensitive. In addition, Moab also reserves licenses in conjunction with future jobs to ensure these jobs can run at the appropriate time.īy default, Moab supports up to 128 independent license types. Moab monitors license usage and only launches an application when required software license availability is guaranteed. Moab supports both node-locked and floating license models and even allows mixing the two models simultaneously. In each case, these licenses are consumable and application access is denied once they are gone.

In a floating license model, a limited number of software licenses are made available cluster wide, and these licenses may be used on any combination of compute hosts. For example, node013 may support up to two simultaneous jobs accessing application matlab. Under a node-locked license, use of a given application is constrained to certain hosts. Software license management is typically enabled in one of two models: node-locked and floating.

Controlling and Monitoring License Availability.

Matlab node locked license