Karabo Dask Util incompatible with Calculon

[anawas]

Summary

Some code in karabo/util/dask.py seems to assume that Slurm node names are numbers;

ValueError: invalid literal for int() with base 10: 'g-009'

This error is shown on Calculon. On Daint.Alps you get:

Dashboard link: http://172.28.15.84:8787/status
<Client: 'inproc://172.28.15.84/210171/1' processes=1 threads=288, memory=849.61 GiB>

This is the expected output, though the numbers may vary.

How to reproduce

1. Sign in to Calculon
2. Make sure you have Karabo installed (using a conda environment)
3. Activate the environment
4. Run the following script with srun -p performance python dask_hello_karabo.py

from karabo.util.dask import DaskHandler
client = DaskHandler.get_dask_client()
print(client)

6. You shoud see the follwoing error (the node name may vary):

Traceback (most recent call last):
  File "/mnt/nas05/clusterdata01/home2/andreas/tests/python-hpc-workshop/dask/dask_hello_karabo.py", line 9, in <module>
    client = DaskHandler.get_dask_client()
  File "/home2/andreas/.conda/envs/karabo/lib/python3.10/site-packages/karabo/util/dask.py", line 680, in get_dask_client
    return cls._handler.get_dask_client()
  File "/home2/andreas/.conda/envs/karabo/lib/python3.10/site-packages/karabo/util/dask.py", line 250, in get_dask_client
    if not cls._setup_called and cls.is_first_node():
  File "/home2/andreas/.conda/envs/karabo/lib/python3.10/site-packages/karabo/util/dask.py", line 586, in is_first_node
    return cls.get_node_id() == cls._get_lowest_node_id()
  File "/home2/andreas/.conda/envs/karabo/lib/python3.10/site-packages/karabo/util/dask.py", line 568, in get_node_id
    return int(slurmd_nodename[-len_id:])
ValueError: invalid literal for int() with base 10: 'g-009'
srun: error: calc-g-009: task 0: Exited with exit code 1