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Altair FlowTracer User Guide
FlowTracer is a complete system to create, manage, and execute design flows.
Graphical User Interface
Graphical Tasker LED Monitor

Welcome
What's New
View new features for FlowTracer 2025.1.0.
FlowTracer Overview
An advanced mission critical dependency management platform for developing and executing flows.
FlowTracer Tutorials
Discover FlowTracer functionality with interactive tutorials.
Altair FlowTracer User Guide
FlowTracer is a complete system to create, manage, and execute design flows.
- FlowTracer Roles
  When using FlowTracer in large deployments, three main roles emerge: Administrator, Developer and User. In smaller organizations, a given person may have multiple roles, but the duties of each role still exist.
- Introduction to VOV
  FlowTracer is derived from the system "VOV" originally developed at UC-Berkeley. The word "VOV" is not an acronym, but can be thought of as a contraction of the word "evolve".
- Concepts and Terminology
- Run, Rerun, Stop and Kill Jobs
  The act of requesting FlowTracer to bring a particular target up-to-date is sometimes called a Retrace Request or more simply a Retrace.
- Find, Remove and Clean Files
- Graphical User Interface
  - The GUI Console
    The graphical user interface, called the "console", is invoked with the command vovconsole.
  - Set Browser
    The Set Browser allows you to list and edit the sets defined in the graph.
  - Set Viewer
    When you select a set by double clicking on it in the Set Browser panel, you display that set in the Set Viewer panel.
  - Graphical Tasker LED Monitor
  - System Log
    The system log, located at the bottom of the GUI, shows relevant events, one per line.
  - Customize the GUI
  - Icons
    All icons provide descriptions that you can find by hovering over the icon.
  - Using the Set Browser and Set Viewer
    The GUI console provides a Set Browser navigation panel on the left side, and a Set Viewer panel on the right side.
  - Keyboard Shortcuts
  - Node Selection
  - Weight Driven Placement
    FlowTracer uses a weight-driven placement (WDP) algorithm to place nodes close to their dependencies and minimize overlapping edges. A higher weight is assigned to nodes with low fanout, which allows nodes with single dependency relationships to stack perfectly. A lower weight is assigned to high fanout dependencies.
  - Navigate the Flow Graph
    Navigating the flow graph means moving from one node to another following the input/output dependencies.
  - Monitor Taskers
    To monitor the activity of the taskers, use either vsm from the CLI, or click Console > Vov Monitor from the GUI.
- Browser Interface
  This chapter will cover how you can use your web browser to manage FlowTracer.
- Command Line Interface
  The Altair Accelerator products have a rich set of programs that can be run on the shell command line.
- Create Sets with Selection Rules
- Advanced Information
- Troubleshooting
- Create a FlowTracer Project
- Resource Management
  Altair Accelerator includes a subsystem for managing computing resources. This allows the design team to factor in various constraints regarding hardware and software resources, as well as site policy constraints.
- Rename Nodes
  Renaming of nodes is a task for more advanced users. In most cases, it is simpler to forget all nodes and rebuild the trace from scratch.
- Miscellaneous
- Reports
Altair FlowTracer Administrator Guide
This manual is aimed at the person who will be the administrator for FlowTracer. This person will be responsible for configuring the network resources, setting up the licensing, and establishing security and access rules for the system.
Altair FlowTracer Developer Guide

View All Altair Accelerator Help

Graphical Tasker LED Monitor

The top of the console is the graphical taskers LED monitor. It consists of a grid of sunken rectangles, each representing a tasker host. The color of the rectangle indicates the Tasker Status. In configurations with lots of taskers, each rectangle gets small, reduced to almost like a status LED on a phone.

Figure 1.

Right-clicking on rectangle activates a pop-up menu to control the taskers and the job currently being executed by the taskers.

The taskers LED monitor has limited space, so it can only show a few taskers. If there are more taskers than can fit in the space of the LED, they get automatically grouped together by their status. When grouped like this, a single LED is shown for each group of taskers with similar status. The number in the label indicates how many taskers are in that group.

You can choose to group taskers by a different criteria by selecting the criteria in the dropdown next to the LEDs. Possible grouping criteria are: Arch, Status, and Group. Alternately, you can choose to see all taskers which will then display an LED for each tasker without any grouping.

Note: When displaying all taskers, there may not be enough space to display all taskers. To see all the taskers, you can display the floating taskers monitor by choosing the Console > Floating Taskerlists Monitor menu item.