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Merge branch 'master' of https://git.psi.ch/lsm-hpce/lsm-hpce.gitpages.psi.ch

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title: Jupyterhub on Merlin title: Jupyterhub on Merlin
#tags: #tags:
#keywords: #keywords:
last_updated: 12 July 2019 last_updated: 16 July 2019
#summary: "" #summary: ""
sidebar: merlin6_sidebar sidebar: merlin6_sidebar
permalink: /merlin6/jupyterhub.html permalink: /merlin6/jupyterhub.html
@ -45,7 +45,8 @@ left. You can read about its features [on the official website](https://jupyterl
However, if you prefer the classical notebook UI or you want to use some feature which has not yet been implemented in the However, if you prefer the classical notebook UI or you want to use some feature which has not yet been implemented in the
new interface, you can switch to it by using the **"Launch Classic Notebook"** command from the left sidebar of JupyterLab. new interface, you can switch to it by using the **"Launch Classic Notebook"** command from the left sidebar of JupyterLab.
![launch classical notebook](/images/jupyter-launch-classic.png) {% include image.html file="jupyter-launch-classic.png" caption="Launch Classic Notebook" max-width=501 %}
## Jupyter software environments - running different kernels ## Jupyter software environments - running different kernels
@ -58,17 +59,34 @@ E.g. in this test installation we provide two environments targeted at data scie
When you create a new notebook you will be asked to specify which kernel you want to use. It is also possible to switch the kernel of a running notebook, but you will lose the state of the current kernel, so you will have to recalculate the notebook cells with this new kernel. When you create a new notebook you will be asked to specify which kernel you want to use. It is also possible to switch the kernel of a running notebook, but you will lose the state of the current kernel, so you will have to recalculate the notebook cells with this new kernel.
These environments are also available for standard work in a shell session. You can activate an environment in a normal merlin terminal session by using the `module` (q.v. [using Pmodules](using-modules.html)) command to load anaconda python, and from there using the `conda` command to switch to the desired environment
```
module use unstable
module load anaconda/2019.03
conda activate datascience_py36
```
When the `anaconda` module has been loaded, you can list the available environments by executing
```
conda info -e
```
## Using nbextensions for adding features to your notebook ## Using nbextensions for adding features to your notebook
There exist a number of useful [contributed but unofficial extensions](https://jupyter-contrib-nbextensions.readthedocs.io/en/latest/index.html) There exist a number of useful [contributed but unofficial
that make working in your notebook easier. These regrettably are not yet supported from extensions](https://jupyter-contrib-nbextensions.readthedocs.io/en/latest/index.html)
within the JupyterLab UI, but you can activate them through the Classic Notebook interface (see above) that add useful features to your notebooks. These regrettably are not
yet supported from within the JupyterLab UI, but you can activate them
through the Classic Notebook interface (see above)
<!-- ([see above](##JupyterLab-and-Classic-Notebook-user-interfaces)) --> <!-- ([see above](##JupyterLab-and-Classic-Notebook-user-interfaces)) -->
From the classic Notebook UI you can access the available extensions in a separate tab as displayed in this screenshot: From the classic Notebook UI you can access the available extensions in a separate tab as displayed in this screenshot:
![notebook extensions](/images/jupyter-nbextensions.png) {% include image.html file="jupyter-nbextensions.png" caption="Launch Classic Notebook" max-width=586 %}
Especially the following extensions make working with larger notebooks easier Especially the following extensions make working with larger notebooks easier
* **Table of Contents**: Displays a TOC on the left and you can also configure it * **Table of Contents**: Displays a TOC on the left and you can also configure it
@ -77,5 +95,5 @@ Especially the following extensions make working with larger notebooks easier
## Troubleshooting ## Troubleshooting
In case of problems or request, please either submit a **[PSI Service Now](https://psi.service-now.com/psisp)** incident containing *"Merlin Jupyterhub"* as part of the subject, or contact us by mail through <merlin-admins@lists.psi.ch> using the kind of subject line. In case of problems or request, please either submit a **[PSI Service Now](https://psi.service-now.com/psisp)** incident containing *"Merlin Jupyterhub"* as part of the subject, or contact us by mail through <merlin-admins@lists.psi.ch>.