Behind the Scenes of a Zephyr-powered PCIe AI Accelerator

Tune in on Wednesday, June 4 (9:00 AM EDT / 3:00 PM CEST) for a new Zephyr Tech Talk live stream!

Chris Friedt, P.Eng. & Daniel DeGrasse from Tenstorrent will be joining Benjamin Cabé to discuss how Tenstorrent has embraced Open Source throughout their stack, and how that led to the release of Zephyr-based firmware for their newest PCIe AI Accelerator card. Blackhole launched April 4th, 2025, supporting the latest Zephyr release v4.1.0 and will be v4.2.0-ready.

Notably, Blackhole may very well be the first consumer-targeted PCIe card that will ship with Open Source Zephyr firmware 🚀

Some of the things we will be covering:

* Architecture of the Blackhole SoC
* Board-level overview of P100 and P150 cards, network topologies
* Typical lifecycle of an AI Workload
* User-facing tools for flashing and telemetry
* Which CPU Clusters run Zephyr on the SoC and board
* How Tenstorrent benefits from deploying Zephyr, and how we can give back
* Hints at what is next in Tenstorrent pipeline as well as Tenstorrent’s Open Source FW strategy

Zephyr Tech Talks are live streams organized by and for the Zephyr community. Join us live for a chance to ask your questions directly to our guests, or watch the recording anytime afterward.