Categories – Chameleon Changelog

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).

This past month brings 2025 to a close and also exciting updates, including a year in review, Trovi improvements, and a CHI@Edge artifact, along with announcements about upcoming webinars (next up: How to Organize Artifact Evaluations (AEs) with Shared Infrastructure on Jan. 13th), our call for presentations for our sixth user meeting at NCAR’s campus in Boulder, and highlights from our newly appointed reproducibility ambassadors.

This month brings exciting updates including enhanced hardware browser integration, CHI@Edge stability improvements, and expanded support for distributed training on AMD GPUs, along with announcements about upcoming webinars and our sixth user meeting at NCAR’s campus in Boulder.

October was Performance Month for Chameleon Cloud. We're excited to share a variety of performance upgrades for various testbed services, a new Trovi feature, new webinars, user resources, and awesome Trovi artifacts developed by our users!

This month we have some exciting updates to Trovi’s dashboard, support for 4xGPU instances on KVM@TACC, improvements to cc-snapshot, and a new webinar series!

New H100 hardware on KVM@TACC, and good news about KVM lease limits, quotas, and SU cost. Additionally, we have SU changes for baremetal, an improved the resource browser, and are announcing the deprecation of TACC login.

This month, we have a significant change to KVM@TACC: as per our announcement last month, all KVM instance launches will now require an advance reservation step in the allocation workflow (with the “advance” potentially being once second from now, i.e., on demand). Also, we have cool new hardware on CHI@Edge, and improvements to the “message of the day” on Chameleon-supported base images

This month we have changes to KVM@TACC that allow you to launch any VM flavor from a reservation, which soon will be required. In a few months, we’ll shut down VMs that aren’t from a lease, so make sure to check out the details! We’ve extended python-chi with better support for KVM, adding methods for flavor reservation, managing security groups, and volumes.

This month, we have new H100 GPU nodes on KVM@TACC! Today, you can launch VM instances with 1 full H100 GPU. This hardware comes with a brand new workflow for reserving VMs. It’s important to note that this reservation workflow will be rolled out to the rest of KVM later in the summer. Additionally, we have refreshed our documentation. Lastly, CHI-in-a-box comes with a new image deploy tool for associate sites.
 

This month, we have new OS images with AMD ROCm and Ubuntu 24 on ARM. Additionally, we have improvements to mounting object store buckets using rclone, a new message-of-the-day, and we’ve fixed the firewall confusion on KVM@TACC.