Join the REPETO project's BoF session at OSDI '26 on July 13 to learn how to package and reproduce systems experiments on Chameleon and Trovi.

This month we're reminding you not to miss out on limited-time Ponte Vecchio (Intel GPU) nodes and the plentiful hardware available at CHI@NCAR, previewing a redesigned Resource Discovery browser, adding ccauth support to python-chi, improving long-running commands on CHI@Edge, retiring the vendor-data service, and refreshing our documentation. In the community, Kate Keahey delivered a keynote at the ISC High Performance 2026 Reproducibility Workshop.

Modern AI systems are often limited not only by how much computation they perform, but also by how much data they need to move. AttenIO, developed by Xiaoyang Lu at Illinois Institute of Technology, is an I/O-driven accelerator for exact long-sequence self-attention that achieves up to 3.4× speedup over FlashAttention-2 by applying principled I/O analysis to minimize data movement across the memory hierarchy.

If you're a student trying to use Chameleon for research but can't figure out how to get access, you're not alone. This guide walks through all the available paths onto the system — from joining a PI's project to using Daypass to explore without any allocation at all.

Chameleon's redesigned resource discovery service is now in preview, offering availability-aware browsing across all CHI sites. Find free bare metal nodes in real time, generate ready-to-run reservation commands, and get conflict detection — all in one unified interface.

This month we're introducing a dedicated Resource Updates section to our newsletter, announcing Ponte Vecchio GPUs at CHI@TACC for a limited time, improving CLI authentication with the new ccauth tool, increasing the image size limit to 100GB, adding Ubuntu 26.04 support with a new fractional GPU image, and improving CHI@Edge BYOD enrollment. In the community, Kate Keahey delivered a keynote at CCGrid 2026 in Sydney.

Distributed storage systems are upgraded constantly, and one subtle class of bug — data format incompatibility, where a new version misreads data written by the old one — ranks among the leading causes of cloud incidents during upgrades, with consequences as severe as data loss and cluster-wide outages. UpFuzz, an award-winning open-source fuzzer from Purdue University, is the first tool built specifically to hunt these cross-version bugs. It has already uncovered 15 previously unknown failures in the latest stable releases of Cassandra, HBase, and HDFS — and its evaluation was run on bare metal testbed infrastructure that included Chameleon.

Trovi is expanding beyond user-uploaded artifacts to include selected reproducibility artifacts from major computer science conferences like EuroSys, SOSP, and SC. We’ve built a pipeline to crawl, index, and surface these external artifacts in the same interface you already use, and connected them to Chameleon so you can go from discovering an interesting artifact to running it on bare metal in minutes.

The RAPTOR team from Argonne National Laboratory and collaborating institutions wins the SC25 Best Reproducibility Advancement Award, using Chameleon Cloud to make their artifact fully reproducible. This marks the second consecutive year a Chameleon user has taken home this honor.

This month we're welcoming CHI@NCAR as a full Chameleon site with 40 new AMD EPYC nodes, announcing baremetal H100 GPUs at CHI@TACC, adding Jetson Orin devices on CHI@Edge, previewing our new AI Documentation Assistant, sharing a revamped documentation site, and highlighting recordings from the Sixth Chameleon User Meeting along with upcoming community events at NSDI '26.