Difference between revisions of "ALICE User Documentation Wiki"

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==Just Getting Started?==
==Just Getting Started?==

Latest revision as of 19:31, 16 June 2021

Off to research computing Wonderland

Welcome to the ALICE HPC user documentation.

ALICE is a computing facility for research and education of Leiden University. With ALICE you have the world of computing at your fingertips. On this wiki, you find the information you need to get started and become more skilled in using a compute cluster for research and education.

We appreciate any questions and comments on the content of the documentation so that we can improve the information that we supply here.

If you are unsure about where to go next, have a look below.

What is ALICE?

The About ALICE pages give some background information, a quick overview and how to acknowledge ALICE in your publications.

How can I get an account?

The page Getting an Account explains how to request an account on ALICE.

What's new with ALICE?

To get information about updates, upgrades, events, planned maintenance and more, have a look at the News page.

Here is the most recent news:

Latest News

  • 12 Jan. 2022 - X2Go available on ALICE: We have added a new option to connect to ALICE. With X2Go, it is possible to work on ALICE using a graphical desktop environment. You can find details on how to set it up here: Login to ALICE using X2Go
  • 11 Jan. 2022 - Early Access phase for new storage system: As part of the commissioning of ALICE's new 370TB BeeGFS-powered storage system, we have started the Early Access phase. In this phase, we give a limited number of users access to the new storage system to try it out and provide feedback to us. This way, we can test and evaluate the performance of the new storage system under more realistic conditions with various kinds of workloads. Our goal is to conclude the Early Access phase at the end of January. We have still spots left for participating in the Early Access phase. If you are interested, please contact the ALICE helpdesk with a short description of the jobs that you are running and how much storage you need.

Next Maintenance

Leiden University network maintenance on 20/21 November

Maintenance on the network of Leiden University will take place on the weekend of 20/21 November. The official announcement from the University can be found on the University webpage.

During this time ALICE will continue to run, but in total isolation, i.e., with no internet access. This means that you will not be able to login to ALICE and jobs cannot for example pull code, download data or access license servers.

We will use this page to provide updates on the status of the cluster.

If you have any question, please contact the ALICE Helpdesk.

Just Getting Started?

If you're new to ALICE, please check out the User Guide.

What more can I do with ALICE?

If you already have experience with ALICE and/or HPC, have a look at the Advanced Guide pages. Please note that many of the pages here are still under construction and subject to change.

What else is there about ALICE?

If you need more information on general topics, such as hardware, storage, and policies, take a look at the Documentation pages. Please note that many of the pages here are still under construction and subject to change.

Have a question or feedback on ALICE?

If you have a question about ALICE, need help with using it or want to give us some feedback, see the Support page to know how you can connect with us.

Status of ALICE?

Would you like to know how busy ALICE is and if all nodes are up, then have a look at the Current Status Overview.

This is a quick overview:

ALICE node status

CPU nodes: Node015 is out-of-service
Gateway: UP
Head node: UP
Login nodes: UP
GPU nodes: UP
CPU nodes: Up (except for node015)
High memory nodes: UP
Storage: UP
Network: UP

Current Issues

  • Node015 out of service:
    • Node015 is out of service because of technical issues. We are in contact with our vendor.
    • Status: Work in Progress
    • Last Updated: 30 Nove 2021, 14:58 CET
  • Copying data to the shared scratch via sftp:
    • There is currently an issue on the sftp gateway which does prevents users from copying data to their shared scratch directory, i.e., /home/<username>/data
    • A current work-around is to use scp or sftp via the ssh gateway and the login nodes.
    • Status: Work in Progress
    • Last Updated: 30 Nov 2021, 14:56 CET

See here for other recently solved issues: Solved Issues