Setup

PCs

Grappa can be accessed from anywhere using your login credentials & ssh key. icehap-daq can be accessed directly from the local network via: icehap-daq@10.25.121.183. If you’re outside the university network, access icehap-daq via Grappa. The password for icehap-daq is the standard ICEHAP Lab password.

Software

The primary software repo (degg_measurements) is usually located under ‘software’. On icehap-daq: /home/icehap-daq/software/degg_measurements. On Grappa: /disk20/fat/software/degg_measurements.

Data lives in the corresponding /data directories. In data, you can find both json and fat_calibration. Meta-data files (as explained in previous sections) are found in json. Unprocessed files are in fat_calibration. When the data lives on icehap-daq, this is the “local” data, on Grappa it’s the “remote”.

Screen

There are already some previous tips about how to use screen, but I’ll repeat them here. On icehap-daq the DAQ script and setup run in screen sessions. On Grappa, the remote analyses run in screen sessions. You can check the screens available with screen -ls, and attach to them with screen -r <name>. Once in a screen, detach with ‘control+a’, and then ‘d’. Screen sessions only keep a limited amount of previous lines in memory, you can access some of them by doign ‘control+a’, then ‘escape’. Navigate with the up and down arrow keys. Otherwise the screen sessions operate as normal terminals.

On Grappa, the analysis screen sessions are logged in /disk20/fat/data/logs.