2026 is in full swing now. The Chameleon team in Chicago is struggling to keep warm, but the cold isn’t slowing down our momentum as we enter a new year. This newsletter brings upcoming changes to Trovi and the appliance catalog, with announcements about open registration for the 6th Chameleon User Meeting (Boulder, CO, April 15-16), a reminder to submit to the call for presentations, and upcoming webinars (next up: How to Use CHI@Edge to Enable Edge to Cloud Experimentation on Feb. 17th).

Community News & Resources

Registration is now OPEN for 6th Chameleon User Meeting (April 15-16, Boulder, CO): We’re excited to open registration for our upcoming User Meeting. Save your spot before Feb. 28 to take advantage of early pricing discounts! Register here.

Don’t forget to submit your presentation proposals - DUE February 13, 2026: See the Call for Presentations for more details. We’d love to hear about your research and education project but please don’t forget to discuss the infrastructure requirements (hardware, configuration, etc.), experimental apparatus, challenges, and lessons learned – the overall objective of the meeting is to understand what works and what does not – and how we can build a better resource for you! Travel support is available for presenters.

Artifact Evaluation Webinar Recording Available: Our Jan. 2026 webinar recording with Bogdan Stoica’s talk, “How to Organize Artifact Evaluations on Shared Infrastructure”, is now available online! We are grateful to Bogdan for his time and interesting presentation as well as to our wonderful attendees and all the thoughtful questions asked. Watch Bogdan’s talk here.

Tips&Tricks Blog of the Month: Streamlining Resource Discovery and Reservations | Chameleon 

User Experiment Blog of the Month: Core Hours and Carbon Credits: Incentivizing Sustainability in HPC | Chameleon 

Changelog

Changes to Trovi and the Appliance Catalog. We have been working diligently on simplifying interfaces to the system. As you know, in addition to operating the platform, we also support digital artifacts in the form of images, orchestration templates, or experiment patterns that help you get started on the system. Historically, they were collected in two places: images and orchestration templates (aka, appliances) in the Appliance Catalog, and experiment patterns and experiments in the form of Jupyter notebooks in Trovi; both are integrated with the system so you can deploy the digital artifacts directly from there. Historically, Trovi supported only digital artifacts expressed as Jupyter notebooks. This is now changing: we have extended Trovi to support appliance artifacts as well. Among others, this means that the appliance catalog is now redundant and will be gradually phased out. Beginning this week, you will be able to find appliance artifacts in Trovi (search for the appliance tag) and launch them from Trovi in very much  the same way as you were previously able to do from the Appliance Catalog. You will also be able to add new appliances to Trovi. This new functionality as well as the appliance catalog will be available side by side until the end of February. Unless we hear persuasive arguments to the contrary, at the end of the month the ability to contribute to the appliance catalog will be discontinued, but you will still be able to use it to access the appliances until the end of March. At the end of March any new appliances will be migrated from the appliance catalog to Trovi and the appliance catalog will shut down. If you have any concerns or questions we’d love to hear from you: please, let us know via the help desk.

Upcoming Webinars

The Chameleon team hosts webinars on a variety of topics ranging from how to use the testbed to showcasing specific tools, research workflows, and educational projects that users built on Chameleon.

Title	Date	Description
How to Use CHI@Edge to Enable Edge to Cloud Experimentation	February 17, 2026, 12:00 PM CT	Michael Sherman, lead engineer and developer of CHI@Edge, will present new features and functionality for CHI@Edge, demonstrate how to use the platform effectively, and present examples from real users who have found innovative ways to leverage edge computing to deliver exciting experiment results on Chameleon. Register here.

Keep an eye on our webinar calendar as we announce new webinars for upcoming months.