59 lines
3.2 KiB
Markdown
59 lines
3.2 KiB
Markdown
---
|
|
title: Accessing Interactive Nodes
|
|
#tags:
|
|
#keywords:
|
|
last_updated: 13 June 2019
|
|
#summary: ""
|
|
sidebar: merlin6_sidebar
|
|
permalink: /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`` |
|
|
| ~~merlin-l-02.psi.ch~~ | - | - | 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:
|
|
|
|
```bash
|
|
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](https://psi.service-now.com/psisp)** 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](https://www.nomachine.com/product&p=NoMachine%20Enterprise%20Client).
|
|
|
|
* NoMachine *client installation* support has to be requested through **[PSI Service Now](https://psi.service-now.com/psisp)** 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.
|
|
|
|
---
|