[Docs] Add tutorial for mixing Python/PyTorch with TVM using BasePyModule#18947
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MasterJH5574 merged 6 commits intoapache:mainfrom Mar 29, 2026
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[Docs] Add tutorial for mixing Python/PyTorch with TVM using BasePyModule#18947MasterJH5574 merged 6 commits intoapache:mainfrom
MasterJH5574 merged 6 commits intoapache:mainfrom
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This pull request introduces a new tutorial for BasePyModule, demonstrating how to integrate Python functions, TIR kernels, and Relax graphs within a single IRModule. It also refactors the compilation logic in base_py_module.py to more efficiently check for Relax functions. Feedback was provided to improve the R.call_py_func tutorial example by calling the Relax function directly to better illustrate the VM's callback mechanism and to simplify the assertion logic.
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@tvm-bot rerun |
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Failed to re-run CI in https://github.com/apache/tvm/actions/runs/23676691613 Detailswith response |
tlopex
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Overall LGTM, thank you @tlopex .
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This pr add a new tutorial
mix_python_and_tvm_with_pymodule.pydemonstrating how to useBasePyModuleto mix Python/PyTorch functions with TIR and Relax in a single IRModule.Tutorial Contents (7 steps)
I.pyfunc+call_tirbasics, DLPack zero-copy conversion,show()printin pyfuncs — inspect intermediate tensors without compilingcall_tir,call_dps_packed, and Python/PyTorch in one forward passadd_python_functionRelaxToPyFuncConverter— convert Relax IR to PyTorch at different compilation stages (before and after passes) to verify numerical correctnessR.call_py_func— cross-level calls between compiled Relax VM and Python functionsThis pr also fixs a bug in
BasePyModule._compile_functionswhere modules without Relax functions would incorrectly attempt Relax VM compilation, producing spurious warnings likeFailed to compile Relax VM: 'NoneType' object has no attribute 'kind'.