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.
Please find hereafter some important notes on changes with the TC-1 service on Atos in Bologna.
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.
You could use the following commands to issue a new keys pair and configure them:
$> ssh-keygen -q -t ed25519 -N '' -C "$USER@ecmwf.int" -f /home/$USER/.ssh/id_ed25519 $> cat /home/$USER/.ssh/id_ed25519.pub >> /home/$USER/.ssh/authorized_keys
The private key shall be kept with an empty password. If you have already defined the SSH keys on Atos, e.g. rsa keys, make sure that you added the public key to the authorized_keys file. 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 TC1 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.