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Altair Allocator Administrators Guide
Allocator works in conjunction with license monitoring and workload scheduling solutions such as Monitor and Accelerator.

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Altair Allocator Administrators Guide
Allocator works in conjunction with license monitoring and workload scheduling solutions such as Monitor and Accelerator.
- Introduction
  Allocator works in conjunction with license monitoring and workload scheduling solutions such as Monitor and Accelerator.
- Start, Stop and Monitor Allocator
- Sharing Licenses Across Multiple Sites
- Configure Allocator
  To configure Allocator, you need to create a file called config.tcl. This is the only file required for configuring Allocator.
- Allocator Procedures
  In this section, the procedures that may be used in the Allocator configuration file are described.
- Procedures Backward Compatibility
  The previous section described the procedures that may be used in the Allocator configuration file. The new procedures are under the Tcl namespace LA; they should be prefixed with LA::
- Allocator Usage Examples
  This section contains simple examples about using Allocator to solve common problems of sharing licenses between sites.
- Map Host Names
  In several points in the systems, it is useful to get the host name for a checkout, for a job, for a daemon, etc. Since every machine may be known by different names, it is important to provide the expert user with the ability to map host names to some canonical form of the host name.
- Resource Groups
  The notion of a "resource group" in Allocator is useful when you have a resource that is derived from multiple sources.
- Allocator and TIMEVAR
  To make the weights of Allocator change as a function of time, you can use the procedure TIMEVAR.
- Passive Mode
- License Overbooking
- Overbooking in Allocator
- Debugging
- View Allocation Details
- Multiple Queues
- PBS and Other Queues
  Allocator can allocate licenses across multiple schedulers, including Accelerator queues, PBS clusters and others. In this section we discuss how to integrate Allocator and PBS.

Altair Allocator Administrators Guide

Allocator works in conjunction with license monitoring and workload scheduling solutions such as Monitor and Accelerator.

This capability can be used to better utilize the software licenses by having the licenses shared among multiple queues.

Allocator reaches the objective of improving license utilization with the following rules:

Follow the demand: When only one queue (or a subset of queues) requires a shared license, any leftover licenses are allocated to all queues based on weights.
Graduality: The migration of licenses should be gradual so that the queue does not get more licenses than it is capable of using. For example, if a queue has access to 10 CPUs, it is clearly unnecessary to migrate more that 10 tokens of a license to that queue.
Share according to policies: If multiple queues require a shared license, the license should be distributed between the queues based on management policies.

Altair Allocator Administrators Guide

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