The ECaccess software includes the service of launching user jobs according to the dissemination schedule (Dissemination schedule) of ECMWF's real-time data and products. This service is also known as TC-1 service, or TC-1 jobs. For more information on TC-1, see Simple time-critical jobs.

End of computing services in Reading

The HPC (cca//ccb) service in Reading terminated on .

The Computing services on ecgate will continue until , though with limited support.

Please migrate your TC-1 jobs to ATOS as soon as possible.

Please find hereafter some important notes on changes with the TC-1 service on Atos in Bologna.

ECaccess Web Toolkit at ECMWF

To access the ECaccess Web Toolkit on Atos, you will have to load the eacccess module, e.g.:

$> module load ecaccess
$> ecaccess-event-list

SSH keys setting

In order to ensure a proper functioning of the ECaccess jobs submissions, including the TC-1 service, it is essential to configure properly the SSH Keys under the user HOME on the Atos systems. See HPC2020: How to connect for more details.

You only need to do this once, and you can do it running the following command:

$> ssh-key-setup

Without the SSH keys correctly installed, an ECaccess (TC1) job submission will issue an error message like:

lost connection
basename: missing operand
Try 'basename --help' for more information.

Metview/metgram service

As the meteogram database has been moved to Bologna, the Metview meteogram service in Reading will no longer work by default. Rather than fixing the TC-1 jobs in Reading, we strongly recommend users to run these jobs to the Atos systems in Bologna. See example metgram batch job under https://confluence.ecmwf.int/display/UDOC/HPC2020%3A+realtime_metgram.sh. Note that you will need to load the new version of the ecmwf-toolbox.

Delete your TC-1 jobs in Reading

When your TC-1 jobs is up and running on the Atos systems in Bologna, please do stop your TC-1 jobs in Reading, by canceling the job in STANDBY mode with 'ecaccess-job-delete', e.g.:

$> ecaccess-job-list
22379170   ecgate     STDBY      0/1    Oct 26 11:49   [bc06h012 (222)] tc1_06bc.cmd
22345657   ecgate     DONE       1/1    Oct 25 11:50   [bc06h012 (222)] tc1_06bc.cmd
$> ecaccess-job-delete 22379170

Mail notifications currently not working.

SLURM email notifications (directive "#SBATCH --mail-type=") in ECaccess batch jobs on Atos, including TC-1 jobs, are not working at this moment.

TC-1 jobs by TC-2 users

TC-2 users (z<MS> UIDs) cannot currently submit TC-1 jobs on the Atos systems. While we resolve this issue, we invite those users to use their personal UID to launch a TC-1 job, e.g. to trigger the TC-2 ecflow suite.

Common errors

The SLURM directive '#SBATCH --workdir=<directory_name>', commonly used on ecgate in Reading is deprecated. On the ATos systems, you should use '#SBATCH --chdir=<directory_name>' instead.

Make sure you submit your TC-1 jobs to the correct ECaccess events; see command 'ecaccess-event-list'.  If your jobs is submitted to early with reference to the dissemination schedule, it will fail.

Do give your TC-1 jobs sufficient time with the SLURM directive '#SBATCH --time=<HH:MM:SS>'.