unk_linear_algebra_feb_28th_2017.md 2.6 KB
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title = "UNK Linear Algebra, Feb. 28, 2017"
description = "UNK Linear Algebra, Feb. 28, 2017."
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**If at any time today you have difficulties or become lost, please
place the <span style="color: rgb(255,0,0);">red</span> sticky note on
top of your monitor and a helper will be around to assist you.**

    For these instructions, any commands to be typed into the terminal will be formatted like this.

**What is a cluster:**
----------------------

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![cluster image](/images/cluster_small.png)
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(picture courtesy of:
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[http://training.h3abionet.org/technical_workshop_2015/?page_id=403](http://training.h3abionet.org/technical_workshop_2015/?page_id=403))
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**  
**

**To connect to the Crane cluster:**
------------------------------------

-   insert the Yubikey into the computer's USB drive. There should be a
    small green light in the middle of the Yubikey to indicate it is
    inserted correctly.
-   Open your preferred web browser and navigate to
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    [http://go.unl.edu/cranessh](http://go.unl.edu/cranessh)
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-   Click "Start SSH session to crane.unl.edu"  
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{{% notice info %}}
The link above is no longer available. If you wish to use a terminal in your browser, Sandstone is an option [https://hcc.unl.edu/docs/guides/sandstone/](https://hcc.unl.edu/docs/guides/sandstone/)
{{% /notice %}}
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   ![](/images/ssh.png)
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-   Click the "Terminal: SSH" icon to begin the SSH session  
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    ![](/images/terminalSSH.png)
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-   Type in the provided Username and Password. Note that the password
    will not display on screen, but rest assured that even though
    nothing is being output, your password is being entered as you type.
-   At the "Passcode:" prompt, press your finger to the gold circle in
    the middle of the Yubikey until a string of characters appears on
    screen.  
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    ![](/images/yubikey.png)
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-   If you logged in successfully, your screen should look similar to
    the one belo  
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    ![](/images/crane_login.png)
	
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**Linux Commands Reference List:**
----------------------------------
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https://hcc.unl.edu/docs/Quickstarts/connecting/basic_linux_commands/
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**To run MATLAB interactively:**
--------------------------------

-   After logging into the cluster, navigate to your $WORK directory:
    -   cd $WORK

-   Request an interactive job:
    -   srun --reservation=unk --mem=4096 --pty $SHELL

-   Load the MATLAB module:
    -   module load matlab

-   Run MATLAB:
    -   matlab

**To access the MATLAB Tutorial:**
----------------------------------

-   Navigate to your $WORK directory: 
    -   cd $WORK

-   Clone the github repo containing the tutorial files:
    -   git clone https://github.com/unlhcc/HCCWorkshops.git