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Android + OpenCL implementation β€” runs on-device on non-flagship phones (Adreno 6xx)

#28
by a8nova - opened

Hi! I wanted to share an Android + OpenCL implementation of SmolVLM-256M-Instruct, in case anyone wants to run it on a phone:

  • Try it: Edgi on Google Play β€” runs fully on-device, no cloud.
  • Open source: the app is built on top of the open-source adreno-llms inference engine β€” https://github.com/a8nova/adreno-llms β€” pure C++/OpenCL with hand-written kernels tuned for Adreno; the vision tower, projector, and language model all run on the GPU.

It's tuned and tested on Adreno 6xx GPUs β€” the GPU class in mid-range and older Android phones (verified on a 2020 Motorola Razr / Adreno 620) β€” and should run on most arm64 Android phones with OpenCL, though the optimizations are Adreno-specific. On the Adreno 620 it describes images fully on-device, decoding at ~10.2 tok/s in fp16.

Hope it's useful β€” happy to answer questions!

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