> For the complete documentation index, see [llms.txt](https://docs.virtual-flow.org/tutorials-af/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.virtual-flow.org/tutorials-af/tutorial-2-afvs-on-slurm/starting-the-atg-prescreen.md).

# Starting the ATG Prescreen

Now we are ready to start the jobs using the `./afvs_submit_jobs.py` command. It is recommended to start by submitting a single work unit (job) to test whether all works well:

```
./afvs_submit_jobs.py 1 1
```

Afterward, the workflow can be monitored as described in the next section [Monitoring the ATG Prescreen](/tutorials-af/tutorial-1-afvs-on-aws/monitoring-the-atg-prescreen.md).

Once the first job is completed successfully, which might take 15-30 minutes, the remaining jobs can be submitted.

```
./afvs_submit_jobs.py 2 439
```

Here we assumed that 439 is the number of work units (please see the previous section [Setting up the ATG Prescreen](/tutorials-af/tutorial-1-afvs-on-aws/setting-up-the-atg-prescreen.md)on how you can obtain the correct number). The above command will submit all remaining work units that were prepared (2 to 439) in the previous section with the `afvs_prepare_workunits.py` command.