NEMO/Login: Difference between revisions

From bwHPC Wiki
Jump to navigation Jump to search
mNo edit summary
mNo edit summary
Line 10: Line 10:
|}
|}


After registration (registration procedure at [[Registration/bwForCluster]]), the bwForCluster NEMO can be accessed via a Secure Shell like <tt>ssh</tt> on Linux and Mac.
After registration (registration procedure at [[Registration/bwForCluster]]), the bwForCluster NEMO can be accessed via a Secure Shell like <tt>ssh</tt> on Linux and Mac or MobaXterm on Windows.
Please refer further to '''[[Registration/bwForCluster#Information_for_already_registered_users|Information for already registered users]]''' at the bottom of the bwForCluster registration page, especially the [[Registration/Login|Login Guide]].

== Hostnames for NEMO ==

There are two login nodes for NEMO login1 and login2.
login1:
login.nemo.uni-freiburg.de # alias for login1
login1.nemo.uni-freiburg.de
login2:
login2.nemo.uni-freiburg.de

== SSH form Linux or Mac ==

See [[Registration/Login#Username|Login Guide]].


From linux machines, you can log in using
From linux machines, you can log in using


ssh <UserID>@login.nemo.uni-freiburg.de # alias for login1
ssh <UserID>@login1.nemo.uni-freiburg.de
ssh <UserID>@login1.nemo.uni-freiburg.de
ssh <UserID>@login2.nemo.uni-freiburg.de
ssh <UserID>@login2.nemo.uni-freiburg.de
Line 24: Line 39:
For better performance on slow connections you should use e.g. [[VNC]].
For better performance on slow connections you should use e.g. [[VNC]].


== Windows Systems ==
== SSH from Windows ==


See [[Registration/Login#Username|Login Guide]].
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.
Start ''MobaXterm'', fill in the following fields:
Start ''MobaXterm'', fill in the following fields:
Line 39: Line 54:
== About UserID / Username ==
== About UserID / Username ==


See [[Registration/Login#Username|Login Guide]].
<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:

{| style="border:3px solid darkgray; margin: 5em auto 5em auto;" width="60%"
|-
!scope="row" {{Darkgray}} | Site
!scope="row" {{Darkgray}}| Prefix
!scope="row" {{Darkgray}}| 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 ===
== Example ==


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:
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:
Line 91: Line 63:
== Allowed activities on login nodes ==
== Allowed activities on login nodes ==


See [[Registration/Login#Allowed_Activities_on_Login_Nodes|Allowed Activities on Login Nodes]] in the Login Guide.
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. We advise users to use [[BwForCluster_NEMO_Specific_Batch_Features#Interactive_Jobs|interactive jobs]] for compute and memory intensive tasks like compiling.
We advise users to use [[BwForCluster_NEMO_Specific_Batch_Features#Interactive_Jobs|interactive jobs]] for compute and memory intensive tasks like compiling.


= Password Reset =
= Password Reset =


See [[Registration/Password|Password Guide]].
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.


= De-registration =
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]].


See [[Registration/Deregistration|De-registration Guide]].


= Further reading =
= Further reading =


* [[:Category:BwForCluster NEMO|bwForCluster NEMO]]
* [[NEMO|bwForCluster NEMO]] main wiki


* Scientific software is made accessible using the [[Environment Modules]] system
* Scientific software is made accessible using the [[Software Modules]] system


* Compute jobs must be submitted as [[Batch Jobs]]
* Compute jobs must be submitted as [[Batch Jobs]]

Revision as of 12:16, 18 February 2022

Login

Attention.svg

Access to NEMO is limited to IP addresses from the BelWü network. All home institutions of our current users are connected to BelWü, so if you are on your campus network (e.g. in your office or on the campus WiFi) you should be able to connect to NEMO without restrictions. If you are outside one of the BelWü networks (e.g. at home), a VPN connection to the home institution or a connection to an SSH jump host at the home institution must be established first.

After registration (registration procedure at Registration/bwForCluster), the bwForCluster NEMO can be accessed via a Secure Shell like ssh on Linux and Mac or MobaXterm on Windows. Please refer further to Information for already registered users at the bottom of the bwForCluster registration page, especially the Login Guide.

Hostnames for NEMO

There are two login nodes for NEMO login1 and login2. 

login1:
 login.nemo.uni-freiburg.de   # alias for login1
 login1.nemo.uni-freiburg.de
login2:
 login2.nemo.uni-freiburg.de

SSH form Linux or Mac

See Login Guide.

From linux machines, you can log in using 

ssh <UserID>@login.nemo.uni-freiburg.de   # alias for login1
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.

SSH from Windows

See Login Guide.

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

See Login Guide.

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

See Allowed Activities on Login Nodes in the Login Guide.

We advise users to use interactive jobs for compute and memory intensive tasks like compiling.

Password Reset

See Password Guide.

De-registration

See De-registration Guide.

Further reading

Retrieved from "https://wiki.bwhpc.de/wiki/index.php?title=NEMO/Login&oldid=10059"