On SAGA cluster

Getting started on the SAGA cluster

Get a SAGA account and ask to have a directory created for you under /mnt/beegfs/users/$USER
Install miniconda
```
cd /mnt/beegfs/users/$USER
wget https://repo.anaconda.com/miniconda/Miniconda3-latest-Linux-x86_64.sh
sh Miniconda3-latest-Linux-x86_64.sh
```
read and accept the license, and install under /mnt/beegfs/users/$USER/miniconda3, answer questions, and restart your shell
install mamba for faster package management
```
conda install -c conda-forge mamba
```
install jupyterlab
```
mamba install -c conda-forge jupyterlab
```

Setup your environment to run CHEASE (optional)

export PATH=$PATH:/mnt/beegfs/users/meneghini/chease/src-f90

Create a symbolic link from /mnt/beegfs/users/$USER/julia/ to ~/.julia
```
mkdir -p /mnt/beegfs/users/$USER/julia/dev
ln -s /mnt/beegfs/users/$USER/julia ~/.julia
```
~/.julia is where the Julia will install itself by default, and this will trick it to install itself in the IR&D folder instead.
For convenience create also a symbolic link in your $HOME that points to the Julia dev folder:
```
ln -s /mnt/beegfs/users/$USER/julia/dev ~/julia_dev
```
Now follow the standard Julia and FUSE installation instructions

Jupyter on SAGA cluster

Connect to saga and launch screen
Note
You can re-connect to an existing screen session with screen -r
Then start the Jupyter lab server from the screen session (screen will keep jupyter running even when you log out)
```
jupyter lab --no-browser --port 55667
```
Copy the token that you see on this session it should look something like token=1f1e0259cbc1..................

On your computer setup your ~/.ssh/config this way (need to do this only once):

Host cybele cybele.gat.com
Hostname cybele.gat.com
User meneghini
Port 2039

Host sagae saga.gat.com
Hostname saga.gat.com
User meneghini
ProxyCommand ssh -q cybele nc %h %p

On your computer start a tunnel going through cybele to saga
```
ssh -N -L localhost:33445:localhost:55667 sagae
```
Note
Keep this terminal always open. You may need to re-issue this command whenever you put your laptop to sleep.
On your computer open a web browser tab to localhost:33445 to connect to the Jupyter-lab session on saga. Use the token when prompted.