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VOV Subsystem Reference Guide
VOV Metrics
The Altair Accelerator allows users to collect arbitrary metrics, where a metric is defined as a "named time series" of values, where each value is either a floating point number or a string.
Metrics Naming
The name of a metric determines the name of the file used to store the metric. Therefore, the name of a metric may include any character that is acceptable in a file name.

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What's New
View new features for VOV Subsystem 2025.1.0.
Overview
Discover the workspace, licensing and installation, and training.
VOV Subsystem Tutorials
Discover VOV Subsystem functionality with interactive tutorials.
VOV Subsystem Administrator Guide
This manual provides information about managing a VOV project, including starting the server and connecting computing resources such as computers and licenses.
VOV Subsystem Reference Guide
- Command Line Interface
- Fields, Selection Rules and Formatting Strings
- VOV Metrics
  The Altair Accelerator allows users to collect arbitrary metrics, where a metric is defined as a "named time series" of values, where each value is either a floating point number or a string.
  - Metrics Storage
    The metrics are primarily stored in the vovserver memory. You can choose how much RAM is to be used for the metrics using the parameter metrics.maxmem, which is a value in MB.
  - Metrics Naming
    The name of a metric determines the name of the file used to store the metric. Therefore, the name of a metric may include any character that is acceptable in a file name.
  - Built-in Server Metrics
  - VOV Metrics Command Line Interface
    The simplest way to manage metrics is with the utility vovmetric.
  - Using vovselect
    You can also query the metrics using vovselect.
  - Vtk Interface
    The low-level interface for metrics is with the vtk_metric family of procedures.
  - Plotting
    The vovconsole has some ability to plot metrics using the VovPlotMetrics procedure.
- Miscellaneous
- VOV Security Infrastructure
- REST Application Programming Interface
  Altair Accelerator supports a RESTful API that enables a developer to submit, monitor, and control batch jobs as well as query the batch scheduler queues, jobs, and hosts in useful ways.
- All About Tcl
- VTK Procedures
EDA Tool Integration Guide
This document is a collection of techniques that have proven to be useful when applying FlowTracer in Electronic Design Automation.

Metrics Naming

The name of a metric determines the name of the file used to store the metric. Therefore, the name of a metric may include any character that is acceptable in a file name.

Simple metrics may have names like "myMetric" "xxx". The server metrics have names like "scheduler/runningJobs", "scheduler/slots/inuse", or "scheduler/jobsPerHour".

The slashes in a name separate the components of the name. If a component has the form PROPERTY=VALUE, then the PROPERTY part identifies a property of the metric which can be queried. For example, a metric with name

site=US/user=john/res=abc/inuse

can be considered as a metric with 4 components and 3 properties, namely "site" "user" and "res".