Admin Task Manager

Monitor and manage queued tasks across all users in Driverless AI.

备注

You must have administrator privileges to access this feature.

Overview

The Admin Task Manager provides a centralized dashboard for monitoring and managing tasks scheduled in the CPU and GPU execution queues, regardless of which user started them. Use this page to:

• View tasks waiting in the CPU and GPU execution queues

• View detailed execution metadata for a task

• Change the priority of a queued task

• Abort one or more tasks to free up resources

备注

The Task Manager currently lists experiment tasks only. Tasks appear in the queue while they wait for resources and leave the queue when a worker picks them up for execution.

Access the Task Manager

To open the Task Manager:

1. In the top navigation bar, click Administration.

   

2. Select TASK MANAGER.

The Task Manager displays the list of tasks in the selected queue. The list refreshes automatically every 30 seconds.

Page layout

Queue selector

Use the queue selector in the top-right corner of the page to switch between execution queues:

• CPU Queue: Tasks scheduled on CPU resources (default view)

• GPU Queue: Tasks scheduled on GPU resources

Task list

Each task in the list shows the following columns:

• Queue Position: The task’s position in the queue. Position #1 runs first.

• Queued At: When the task entered the queue, shown as relative time. Hover over the value to see the exact timestamp.

• Task: The task type

• Key: The unique key of the experiment

• User: The user who started the task

• Timeout: The task’s timeout setting

Use the search box to filter tasks by key, user, or procedure. Click column headers to sort.

The task list shows 10 tasks per page. Use the pagination controls below the list to move between pages.

If the selected queue is empty, the page displays No running tasks available.

View task details

To view detailed information about a task:

1. Click the actions menu next to the task.

   

2. Select DETAILS.

   The More Details dialog displays:

   • Queue Position: The task’s position in the queue

   • Queued At: When the task entered the queue

   • Entity ID: The key of the experiment associated with the task

   • Task ID: The unique identifier of the task

   • Procedure: The internal procedure the task runs

   • User: The user who started the task

   

3. Click CLOSE when finished.

Update task priority

Adjust a task’s position in the queue to manage resource contention. Priority #1 runs first, and higher numbers run later.

备注

Updating task priority requires the experiments priority queue. The priority queue is available when the worker_mode configuration option is set to singlenode or multinode and the enable_experiments_priority_queue configuration option is enabled. If the priority queue is not available on your instance, priority updates fail with the error Cannot change the priority of experiment '<key>' because priority queue is not available.

To update a task’s priority:

1. Click the actions menu next to the task.

2. Select UPDATE PRIORITY.

3. In the Update Task Priority dialog, use the arrows to set the new priority:

   • Up arrow: Higher priority (runs sooner)

   • Down arrow: Lower priority (runs later)

   

4. Click CONFIRM.

The task list reloads with the updated queue order.

Abort tasks

Abort runaway or low-priority tasks to free up resources.

小心

Aborting a task terminates the experiment. You cannot undo this action.

Abort a single task

1. Click the actions menu next to the task.

2. Select ABORT.

3. In the confirmation dialog, click OK to abort the task, or CANCEL to keep it.

   

The aborted experiment shows the Aborted by user status on the Experiments page.

Abort multiple tasks

1. Select tasks using the checkboxes in the task list. The abort button in the top-right corner of the page shows the number of selected tasks.

   

2. Click the abort button.

3. In the confirmation dialog, click OK to abort the selected tasks, or CANCEL to keep them.

Troubleshooting

Task Manager option not visible

If the TASK MANAGER option does not appear in the Administration menu:

• Confirm you have administrator privileges

• If your instance uses external authorization, confirm your role grants the user/tasks/LIST action. Loading the queue data after you open the page also requires the admin/experiments/GET action.

Update Priority or Abort options missing

If the UPDATE PRIORITY or ABORT options do not appear in the task actions menu:

• Confirm you have administrator privileges

• If your instance uses external authorization, confirm your role grants the admin/experiments/UPDATE action (for priority updates) or the admin/tasks/ABORT action (for aborting tasks)

Priority update fails

If updating a task’s priority fails with the error Cannot change the priority of experiment '<key>' because priority queue is not available:

• Confirm the enable_experiments_priority_queue configuration option is set to true on your instance

• Confirm the worker_mode configuration option is set to singlenode or multinode

• Contact your system administrator if the issue persists

Task list appears empty

If the page displays No running tasks available:

• Check both the CPU and GPU queues using the queue selector

• Clear any text in the search box

• Verify that tasks are currently waiting in the queue. Tasks that are already running on a worker do not appear in the queue list.