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arXiv · 2511.15564

Toward Open-Source Chiplets for HPC and AI: Occamy and Beyond

Paul Scheffler·Thomas Benz·Tim Fischer·Lorenzo Leone·Sina Arjmandpour·Luca Benini
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Abstract

We present a roadmap for open-source chiplet-based RISC-V systems targeting high-performance computing and artificial intelligence, aiming to close the performance gap to proprietary designs. Starting with Occamy, the first open, silicon-proven dual-chiplet RISC-V manycore in 12nm FinFET, we scale to Ramora, a mesh-NoC-based dual-chiplet system, and to Ogopogo, a 7nm quad-chiplet concept architecture achieving state-of-the-art compute density. Finally, we explore possible avenues to extend openness beyond logic-core RTL into simulation, EDA, PDKs, and off-die PHYs.

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Paul Scheffler, Thomas Benz, Tim Fischer, Lorenzo Leone, Sina Arjmandpour, Luca Benini. 2025-11-19. Toward Open-Source Chiplets for HPC and AI: Occamy and Beyond. https://arxiv.org/abs/2511.15564

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