> ## Documentation Index
> Fetch the complete documentation index at: https://docs.tilebox.com/llms.txt
> Use this file to discover all available pages before exploring further.

# JobClient.submit

```python theme={"system"}
def JobClient.submit(
  job_name: str,
  root_task_or_tasks: Task | Iterable[Task],
  cluster: str | Cluster | Iterable[str | Cluster] | None = None,
  max_retries: int = 0
) -> Job
```

Submit a job.

## Parameters

<ParamField path="job_name" type="str">
  The name of the job.
</ParamField>

<ParamField path="root_task_or_tasks" type="Task">
  The root task for the job. This task is executed first and can submit subtasks to manage the entire workflow. A job can have optionally consist of multiple root tasks.
</ParamField>

<ParamField path="cluster" type="str | Cluster | Iterable[str | Cluster] | None">
  The [cluster slug](/workflows/concepts/clusters#managing-clusters) for the cluster to run the root task on. In case of multiple root tasks, a list of cluster slugs can be provided.
  If not provided, the default cluster is used.
</ParamField>

<ParamField path="max_retries" type="int">
  The maximum number of [retries](/workflows/concepts/tasks#retry-handling) for the subtask in case it fails. Defaults to 0.
</ParamField>

<RequestExample>
  ```python Python theme={"system"}
  from my_workflow import MyTask

  job = job_client.submit(
      "my-job",
      MyTask(
        message="Hello, World!", 
        value=42,
        data={"key": "value"}
      ),
  )
  ```
</RequestExample>