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title, last_updated, sidebar, permalink
| title | last_updated | sidebar | permalink |
|---|---|---|---|
| Accessing Interactive Nodes | 13 June 2019 | merlin6_sidebar | /merlin6/interactive.html |
Login nodes description
The Merlin6 login nodes are the official machines for accessing the recources of Merlin6. From these machines, users can submit jobs to the Slurm batch system as well as visualize or compile their software.
The Merlin6 login nodes are the following:
| Hostname | SSH | NoMachine | #cores | #Threads | CPU | Memory | Scratch | Scratch Mountpoint |
|---|---|---|---|---|---|---|---|---|
| merlin-l-001.psi.ch | yes | yes | 2 x 22 | 2 | Intel Xeon Gold 6152 | 384GB | 1.8TB NVMe | /scratch |
| merlin-l-002.psi.ch | yes | yes | 2 x 22 | 2 | Intel Xeon Gold 6142 | 384GB | 1.8TB NVMe | /scratch |
| merlin-l-01.psi.ch | yes | - | 2 x 16 | 2 | Intel Xeon E5-2697Av4 | 512GB | 100GB SAS | /scratch |
| - | - | 2 x 16 | 2 | Intel Xeon E5-2697Av4 | 512GB | 100GB SAS | /scratch |
- merlin-l-02.psi.ch has an severe incident and is not available to users: HP is trying to locate and fix the problem.
Remote Access
SSH Access
For interactive command shell access, use an SSH client. We recommend to activate SSH's X11 forwarding to allow you to use graphical applications (e.g. a text editor. For more performant graphical access, refer to the sections below).
E.g. for Linux:
ssh -XY $username@merlin-l-01.psi.ch
X applications are supported in the login nodes and X11 forwarding can be used for those users who have properly configured X11 support in their desktops:
- Merlin6 administrators do not offer support for user desktop configuration (Windows, MacOS, Linux).
- Hence, Merlin6 administrators do not offer official support for X11 client setup.
- However, a generic guide for X11 client setup (Windows, Linux and MacOS) will be provided.
- PSI desktop configuration issues must be addressed through PSI Service Now as an Incident Request.
- Ticket will be redirected to the corresponding Desktop support group (Windows, Linux).
More efficient graphical access using a NoMachine client
X applications are supported in the login nodes and can run efficiently through a NoMachine client. This is the officially supported way to run more demanding X applications on Merlin6. The client software can be downloaded from the Nomachine Website.
- NoMachine client installation support has to be requested through PSI Service Now as an Incident Request.
- Ticket will be redirected to the corresponding support group (Windows or Linux)
- NoMachine client configuration and connectivity for Merlin6 is fully supported by Merlin6 administrators.
- Please contact us through the official channels on any configuration issue with NoMachine.