56 lines
3.1 KiB
Markdown
56 lines
3.1 KiB
Markdown
---
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title: Accessing Interactive Nodes
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#tags:
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keywords: How to, HowTo, access, accessing, nomachine, ssh
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last_updated: 07 September 2022
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#summary: ""
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sidebar: merlin7_sidebar
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permalink: /merlin7/interactive.html
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---
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## SSH Access
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For interactive command shell access, use an SSH client. We recommend to activate SSH's X11 forwarding to allow you to use graphical
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applications (e.g. a text editor, but for more performant graphical access, refer to the sections below). X applications are supported
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in the login nodes and X11 forwarding can be used for those users who have properly configured X11 support in their desktops, however:
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* Merlin7 administrators **do not offer support** for user desktop configuration (Windows, MacOS, Linux).
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* Hence, Merlin7 administrators **do not offer official support** for X11 client setup.
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* Nevertheless, a generic guide for X11 client setup (*Linux*, *Windows* and *MacOS*) is provided below.
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* PSI desktop configuration issues must be addressed through **[PSI Service Now](https://psi.service-now.com/psisp)** as an *Incident Request*.
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* Ticket will be redirected to the corresponding Desktop support group (Windows, Linux).
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### Accessing from a Linux client
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Refer to [{How To Use Merlin -> Accessing from Linux Clients}](/merlin7/connect-from-linux.html) for **Linux** SSH client and X11 configuration.
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### Accessing from a Windows client
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Refer to [{How To Use Merlin -> Accessing from Windows Clients}](/merlin7/connect-from-windows.html) for **Windows** SSH client and X11 configuration.
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### Accessing from a MacOS client
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Refer to [{How To Use Merlin -> Accessing from MacOS Clients}](/merlin7/connect-from-macos.html) for **MacOS** SSH client and X11 configuration.
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## NoMachine Remote Desktop Access
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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 Merlin7.
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* For PSI Windows workstations, this can be installed from the Software Kiosk as 'NX Client'. If you have difficulties installing, please request support through **[PSI Service Now](https://psi.service-now.com/psisp)** as an *Incident Request*.
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* For other workstations The client software can be downloaded from the [Nomachine Website](https://www.nomachine.com/product&p=NoMachine%20Enterprise%20Client).
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### Configuring NoMachine
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Refer to [{How To Use Merlin -> Remote Desktop Access}](/merlin7/nomachine.html) for further instructions of how to configure the NoMachine client and how to access it from PSI and from outside PSI.
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## Login nodes hardware description
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The Merlin7 login nodes are the official machines for accessing the recources of Merlin7.
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From these machines, users can submit jobs to the Slurm batch system as well as visualize or compile their software.
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The Merlin7 login nodes are the following:
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| Hostname | SSH | NoMachine | Scratch | Scratch Mountpoint |
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| ----------------------- | --- | --------- | -------- | :------------------ |
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| login001.merlin7.psi.ch | yes | yes | 1TB NVMe | ``/scratch`` |
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| login002.merlin7.psi.ch | yes | yes | 1TB NVMe | ``/scratch`` |
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