areusch commented on pull request #7742:
URL: https://github.com/apache/tvm/pull/7742#issuecomment-807144342
hi @stoa, thanks for your contribution! I agree with @tqchen an RFC would be
great.
looking over the code I see a lot of concepts implemented that are fairly
similar to what we have implemented in microTVM now:
- a remote execution driver
- a project generation script
- a minimal C runtime, including graph runtime and c_backend_api.h
implementation
For microTVM, we're taking the approach of reusing C runtime components
between platforms and/or SoCs, and allowing platform-specific e.g. memory
allocators by implementing `include/tvm/runtime/crt/platform.h`. We are also
adopting a standard "interface layer" between TVM and generated firmware code
(composed of "Model Library Format," "Project API," and the "TVM RPC server"),
which provides a great way to reduce boilerplate code when targeting µC.
It would be great if we could consider a way to unify your approach with our
microTVM approach. It seems like the STM32 firmware code could become an
implementation of our Project API (similar to the
[host](https://github.com/areusch/incubator-tvm/tree/project-generator/src/runtime/crt/host)
demo project). This would allow us to bring further improvements to TVM
currently under development (e.g. AOT runtime, graph-level optimization, `tvmc`
integration), as well as enable AutoTVM on your platform.
Here are some pointers to RFCs that describe our approach in more detail:
- [microTVM M2
roadmap](https://discuss.tvm.apache.org/t/tvm-microtvm-m2-roadmap/8821)
- [Model Library Format
RFC](https://discuss.tvm.apache.org/t/rfc-tvm-model-library-format/9121), now
committed
- [Project Generator API
RFC](https://discuss.tvm.apache.org/t/rfc-tvm-project-api/9449), PoC
[here](https://github.com/areusch/incubator-tvm/tree/project-generator).
- [AOT Runtime
RFC](https://discuss.tvm.apache.org/t/implementing-aot-in-tvm/9206)
Please also feel free to suggest improvements or changes to our current
implementation. It is very much in development and we would like to encourage
contributions!
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