How to modify the execution command in qJupyter?

Community Support
1

I am trying to start qJupyter on one of our servers. 
All well, but I need to modify the q command it uses because we only have a licence for 2 cores on our dev server and I need to append taskset -c 1,2 before the q command. 
Does anyone know how to achieve that ? 

2

Hi ,

Thanks for your message, I’ll leave this open and see if our community have any experience with using qJupyter as it is an external resource.

Thanks,

Megan

3

Edit the file https://github.com/KxSystems/jupyterq/blob/master/kernelspec/kernel.json

{ "argv": ["taskset", "-c", "0,1", "q", "jupyterq_kernel.q", "-cds", "{connection_file}"], "display_name": "Q (kdb+)", "language": "q", "env": {"JUPYTERQ_SERVERARGS":"","MPLBACKEND":"Agg"} }

If you have already installed you can ensure Jupyter picks up the changes by reinstalling the kernel:

python -m jupyter kernelspec install --user --name=qpk /path/to/kernelspec

And you can validate in a notebook with system"taskset -pc ",string .z.i:

 

?

4

thank you . This solved my problem.