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Altair FlowTracer User Guide
FlowTracer is a complete system to create, manage, and execute design flows.
Advanced Information
Tasker Compatibility
When a job becomes eligible to run, VOV places it on the fastest vovtasker host which offers all the resources requested when the job was submitted. The Tasker Compatibility page in the web browser UI shows details of a job's compatibility with each vovtasker machine. You can use this page to understand why a job seems stuck.

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An advanced mission critical dependency management platform for developing and executing flows.
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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
- 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
  - Tasker Compatibility
    When a job becomes eligible to run, VOV places it on the fastest vovtasker host which offers all the resources requested when the job was submitted. The Tasker Compatibility page in the web browser UI shows details of a job's compatibility with each vovtasker machine. You can use this page to understand why a job seems stuck.
  - Unexpected Dependency Graph
- 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

Tasker Compatibility

When a job becomes eligible to run, VOV places it on the fastest vovtasker host which offers all the resources requested when the job was submitted. The Tasker Compatibility page in the web browser UI shows details of a job's compatibility with each vovtasker machine. You can use this page to understand why a job seems stuck.

Access the Tasker Compatibility Page

The Tasker Compatibility page is specific to a particular job. You may access this page from two places:

The more link next to a job on the Job Queue Buckets page. This is the rightmost column, and has a magnifying glass icon.
The Tasker Compatibility link on the Job Details page.

The Job Queue Buckets page is the panel that is displayed when the Queue Buckets tab is selected in the VOV Monitor window.

Tasker Compatibility Page Description

The page consists of a table, with a row for each vovtasker machine. The column headings are:

#: Row number
Tasker: vovtasker name, link to details page of that machine
Info: Compatibility with this job
Missing Resources: Additional resources needed to enable this job to run

There is a button at the page bottom which returns you to the Job Queue Buckets page.

Info Field Meanings

The page consists of a table, with a row for each vovtasker machine.

Busy: Machine is responding to a server message
Full: All job slots have running jobs
Suspended: No jobs may run; not in available time band, or being used interactively
Overloaded: Not accepting new jobs; load average exceeds MAXLOAD in config file
Sick: Server has not received timely heartbeat
Paused: Tasker has been paused by an external signal
Not Connected: Tasker object is not yet connected to a vovtasker process
Tasker Mismatch: Resources provided by this tasker do not match resources requested by the job
Exhausted Resource: All of the resource are in use
Resource Cycle: Resource map entries form a loop
Insufficient time left: When using Offhours, expected job duration would extend into offline period
Unknown: Unspecified reason