AMD and Cerebras tag-team Nvidia's LPUs while Uncle Sam gets schooled on open AI

Two distinct fronts opened this week in the AI infrastructure wars. First, AMD and Cerebras announced a partnership that pairs AMD’s MI300X GPUs with Cerebras’s wafer-scale engines. The pitch is straightforward: give data centers a unified fabric that can handle both training and inference without being locked into Nvidia’s proprietary NVLink ecosystem. Cerebras CEO Andrew Feldman didn’t mince words — “The enemy of my enemy is my friend” — which tells you everything about who they’re gunning for. Spec-wise, AMD also dropped details on its Helios rack-scale system, claiming it beats Nvidia’s upcoming Vera Rubin on nearly every metric. On paper, anyway. Whether those numbers survive contact with real workloads is the multi-billion-dollar question.

Meanwhile, a coalition of industry leaders fired off a letter to the US government arguing for the strategic importance of open-weight AI models. The signatories — a who’s-who of AI research orgs and startups — want policymakers to understand that open models aren’t just charity for academics. They’re a competitive moat against proprietary systems controlled by a handful of companies. The letter’s framing is clever: national security, economic resilience, and innovation all hinge on keeping weights accessible. Conspicuously absent from the signatory list? The obvious suspects who profit most from closed, API-gated models.

On the security beat, things are getting weird. Russian operatives are now impersonating Signal’s support team to phish users — a reminder that encrypted comms are only as secure as the humans using them. Microsoft’s on-prem SharePoint is under active zero-day attack after patches failed to stick the landing. And in a grim milestone, Mikko Hyppönen noted it’s been exactly ten years since the first corporate ransomware attack, with no end in sight. His silver lining: infosec careers are recession-proof.

In open-source land, a quiet rebellion is brewing. Codeberg publicly booted “vibe-coded” AI-generated projects from its platform, drawing a hard line around human-authored FOSS. The message: if you didn’t write it, don’t commit it. GNOME’s Flashback desktop got a Windows-like taskbar that works without extensions, Cinnamon 6.8 teased optional Wayland support, and Debian shipped what may be its final x86-32 release. The old guard isn’t going quietly.