Development and Testing

If you need to develop code (i.e., the standard edit, build, test cycle) or test your workflows and scripts before submitting batch jobs, you should do it within an interactive developmental session under SLURM. The software environment on the nodes within the dev partition is kept consistent with that of the compute servers so you can run jobs and get an accurate idea of what resources are used.

Please remember that you are not allowed to run user applications on the login servers. Interactive work of any kind must be performed in a developmental SLURM session.

Access

Connect to the cluster (ssh user@hpg2.rc.ufl.edu) and use SLURM to start a developmental session.

For example, to get a one-hour session with the default 1 processor core and 2gb of memory:

$ module load ufrc
$ srundev --time=01:00:00

The srundev command is a wrapper around the srun --partition=hpg2-dev --pty bash -i command.

Other SLURM directives can also be added to request more processors or memory. For example:

$ module load ufrc
$ srundev --time=60 --cpus-per-task=4 --mem-per-cpu=4gb

Note

• The default time limit for the hpg2-dev partition is 00:10:00 (10 minutes). The maximum time limit in the dev partition is 12 hours.
• At this time, you will not be able to access a development session if your invested resources are fully engaged.