NEMO/Login: Difference between revisions
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= Login = |
= Login = |
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After registration (registration procedure at [[bwForCluster User Access]], the bwForCluster NEMO can be accessed via a Secure Shell like <tt>ssh</tt> on Linux and Mac |
After registration (registration procedure at [[bwForCluster User Access]], the bwForCluster NEMO can be accessed via a Secure Shell like <tt>ssh</tt> on Linux and Mac. |
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From linux machines, you can log in using |
From linux machines, you can log in using |
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For better performance on slow connections you should use e.g. [[VNC]]. |
For better performance on slow connections you should use e.g. [[VNC]]. |
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== Windows Systems == |
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For Windows systems we strongly recommend to use [http://mobaxterm.mobatek.net/ MobaXterm] instead of ''PuTTY'' or ''WinSCP'' on Windows. ''MobaXterm'' provides a built-in X11 server allowing to start GUI based software. |
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Start ''MobaXterm'', fill in the following fields: |
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<pre> |
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Remote name : login.nemo.uni-freiburg.de # or login1.nemo.uni-freiburg.de, login2.nemo.uni-freiburg.de |
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Specify user name : <UserID> |
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Port : 22 |
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</pre> |
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After that click on 'ok'. Then a terminal will be opened and there you can enter your credentials. |
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== About UserID / Username == |
== About UserID / Username == |
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|ul_username |
|ul_username |
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=== Example === |
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So if your local username for the University is <code>vwxyz1234</code> and you are a user from the University of Freiburg this would combine to: |
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ssh -l fr_vwxyz1234 login.nemo.uni-freiburg.de |
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== Allowed activities on login nodes == |
== Allowed activities on login nodes == |
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= Password Reset = |
= Password Reset = |
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If you forgot your password for the bwForCluster NEMO you can set a new one on the [https://bwservices.uni-freiburg.de NEMO service page]. Just use the link in the |
If you forgot your password for the bwForCluster NEMO you can set a new one on the [https://bwservices.uni-freiburg.de NEMO service page]. Just use the link in the '''bwForCluster NEMO''' service box. |
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If you have trouble resetting your password, please try to delete your password first (use button) and then reset it again. If this does not help de-register and re-register the NEMO service. Otherwise please contact the [[bwForCluster NEMO Support]]. |
If you have trouble resetting your password, please try to delete your password first (use button) and then reset it again. If this does not help de-register and re-register the NEMO service. Otherwise please contact the [[bwForCluster NEMO Support]]. |
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Revision as of 16:33, 7 December 2020
Login
After registration (registration procedure at bwForCluster User Access, the bwForCluster NEMO can be accessed via a Secure Shell like ssh on Linux and Mac.
From linux machines, you can log in using
ssh <UserID>@login1.nemo.uni-freiburg.de ssh <UserID>@login2.nemo.uni-freiburg.de
To run graphical applications, you can use the -X or -Y flag to openssh:
ssh -Y -l <UserID> login1.nemo.uni-freiburg.de ssh -Y -l <UserID> login2.nemo.uni-freiburg.de
For better performance on slow connections you should use e.g. VNC.
Windows Systems
For Windows systems we strongly recommend to use MobaXterm instead of PuTTY or WinSCP on Windows. MobaXterm provides a built-in X11 server allowing to start GUI based software.
Start MobaXterm, fill in the following fields:
Remote name : login.nemo.uni-freiburg.de # or login1.nemo.uni-freiburg.de, login2.nemo.uni-freiburg.de Specify user name : <UserID> Port : 22
After that click on 'ok'. Then a terminal will be opened and there you can enter your credentials.
About UserID / Username
<UserID> of the ssh command is a placeholder for your username at your home organization and a prefix denoting your organization. Prefixes and resulting user names are as follows:
| Site | Prefix | Username |
|---|---|---|
| Freiburg | fr | fr_username |
| Heidelberg | hd | hd_username |
| Hohenheim | ho | ho_username |
| Karlsruhe | ka | ka_username |
| Konstanz | kn | kn_username |
| Mannheim | ma | ma_username |
| Stuttgart | st | st_username |
| Tübingen | tu | tu_username |
| Ulm | ul | ul_username |
Example
So if your local username for the University is vwxyz1234 and you are a user from the University of Freiburg this would combine to:
ssh -l fr_vwxyz1234 login.nemo.uni-freiburg.de
Allowed activities on login nodes
The login nodes are the access point to the compute system and its $HOME directory. The login nodes are shared with all the users of the cluster. Therefore, your activities on the login nodes are limited to primarily set up your batch jobs. Your activities may also be:
- compilation of your program code and
- short pre- and postprocessing of your batch jobs.
To guarantee usability for all the users of the bwForCluster you must not run your compute jobs on the login nodes. Compute jobs must be submitted as Batch Jobs. Any compute job running on the login nodes will be terminated without any notice.
Password Reset
If you forgot your password for the bwForCluster NEMO you can set a new one on the NEMO service page. Just use the link in the bwForCluster NEMO service box.
If you have trouble resetting your password, please try to delete your password first (use button) and then reset it again. If this does not help de-register and re-register the NEMO service. Otherwise please contact the bwForCluster NEMO Support.
Further reading
- Scientific software is made accessible using the Environment Modules system
- Compute jobs must be submitted as Batch Jobs