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Removal of direct internet access for Lonsdale & Kelvin

Submitted by smcgrat on Thu, 01/14/2021 - 13:03

Removal of direct internet access for Lonsdale & Kelvin

14th of January 2021.

Many of our clusters currently run Scientific Linux 6 (SL6) as their Operating System (OS). SL6 is a Red Hat Enterprise Linux 6 (RHEL6) derivative and it reached its end of support at the end of November 2020. Consequently, SL6 is also at end of its support. As a result of the end of SL6 support, there is an increased risk of security vulnerabilities when accessing the clusters. We are monitoring these risks.

We are taking action to upgrade all clusters to a supported OS and will be in touch about that as soon as possible.

In the interim, from Wednesday 20th January, we are restricting ssh access to all clusters as follows:

  • Users connecting to the clusters from the campus network will be able to directly log in, via ssh, to all clusters.
  • Users who use the TCD VPN access will be able to directly log in, via ssh, to all clusters.
  • Users not on campus who do not have TCD VPN access must:
    • first log in, via ssh, to the server: rsync.tchpc.tcd.ie using their existing username and password.
    • From this server users then log in, via ssh, to their cluster of choice using the same username and password.

Unscheduled cluster downtime, October 2020

Submitted by smcgrat on Wed, 10/28/2020 - 09:50

Update - October 30th

Access has been restored to the following clusters:

  1. Kelvin
  2. Lonsdale

Unfortunately the following clusters still remain offline because critical hardware components in them have failed:

  1. Parsons
  2. TCIN mini cluster

We will continue to work to restore access to them and appreciate your patience.

 

Update - October 28th

Due to a College wide power outage circa 19.56 Tuesday October 27th the following clusters are currently unavailable:

  1. Kelvin
  2. Lonsdale
  3. Parsons
  4. TCIN mini cluster

We are working on restoring services as soon as possible.

 

Training Courses in October 2020

Submitted by smcgrat on Mon, 10/05/2020 - 17:22

Research IT (TCHPC) will be running two Online Introduction to TCHPC Systems training courses in October 2020.

These courses will be delivered online via Microsoft Teams.

The course dates and times are shown in the table below.

Who should attend

This course is intended for those who have never run a job on our or anyone else's cluster before and intend to use our clusters for their research. If you have experience using HPC clusters or if you are already successfully submitting jobs to our clusters it will likely be too basic for you.

Who can attend

This course is open to:

  • Trinity College Dublin researchers, staff and collaborators
  • Researchers in UCD through the TCD/UCD innovation alliance

How to attend

Please note that while attendance is freepre-registration is required to secure your place and places are limited. October 2020 is the first time we are delivering this course online. We are limiting the maximum number of attendees at each session to 8 to ensure a reasonable experience for attendees.

See our training page for full details on how to book your place.

Please ensure that you have reviewed the course descriptions and prerequisites before booking.

Course Timetable

Current training course timetable

Course Duration Dates Location
An Online Introduction to TCHPC Systems 90 to 120 minutes Wed 21st Oct 2020, 10am to 12pm Online via Microsoft Teams
An Online Introduction to TCHPC Systems 90 to 120 minutes Thu 22nd Oct 2020, 10am to 12pm Online via Microsoft Teams

 

Downtime for Research IT Services - October 8th 2020

Submitted by smcgrat on Thu, 09/24/2020 - 09:58

The firewall used to access the Research IT network and all the services we host needs to be upgraded.

We will be carrying out this essential upgrade work from 8am until 11am on Thursday 8th of October.

There will be a further "at risk period" until the close of business on that day. During the "at risk period" services Research IT host will may be unavailable if we need to carry out mitigation works in the unlikely event of an issue with the upgrade.

This upgrade will temporarily make all services that Research IT host unavailable. That includes the following:

  • Access to all HPC clusters (jobs will remain running during the downtime)
  • Access to all servers Research IT host on behalf of research groups
  • Access to all websites and other web services Research IT host
  • Internet access from offices connected to the Research IT network on the 2nd floor of the Lloyd Building

We apologise for the downtime and service interruptions this essential work will cause.