GoKawiilLemonSeed Studio runs unmodified Linux amdgpu driver on iPad via PCIDriverKit
LemonSeed Studio is an iPad app that embeds the unmodified upstream Linux amdgpu and amdkfd driver as a PCIDriverKit extension, allowing it to control an AMD GPU connected through a Thunderbolt enclosure. The app also bundles the LemonSeed Engine for on-device LLM inference running on that GPU via its HSA runtime, plus amdgpu_mtopg for live GPU telemetry. The project's source is available via git with recursive submodules, and is dual-licensed under MIT or GPL-2.0-only.
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Porting an unmodified Linux kernel GPU driver to run on iPadOS through a DriverKit extension is a notable technical feat, since Apple's iPad sandboxing and driver model typically make such low-level hardware access difficult. If viable, this approach could open the door to using external AMD GPUs for compute-intensive tasks like on-device LLM inference on iPads, a capability not natively supported by Apple's platform.
- LemonSeed Studio embeds the stock Linux amdgpu/amdkfd driver as a PCIDriverKit extension to control AMD GPUs on iPad.
- The app pairs this driver with an inference engine (LemonSeed Engine) and a telemetry tool (amdgpu_mtopg) for on-device LLM processing via Thunderbolt-connected GPUs.
- The project is open source under MIT or GPL-2.0-only, with components managed as git submodules.
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Published there as: “Running the unmodified Linux amdgpu driver on an iPad”
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