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# IREE dispatch auto-tuning scripts | ||
`libtuner.py` is the core Python script that provides the fundamental functions for the tuning loop. It imports `candidate_gen.py` for candidate generation. To implement the full tuning loop, `libtuner.py` requires a separate Python script that uses the provided `TuningClient` API from `libtuner.py`. | ||
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## Prerequisites | ||
[Optional] Using virtual environments: | ||
```shell | ||
cd tuning | ||
python -m venv .venv | ||
source .venv/bin/activate | ||
``` | ||
Install python dependencies: | ||
```shell | ||
pip install -r ./requirements-tuner.txt | ||
``` | ||
Using the IREE's Python bindings: | ||
- Building with CMake | ||
```shell | ||
-DIREE_BUILD_PYTHON_BINDINGS=ON \ | ||
-DPython3_EXECUTABLE="$(which python)" | ||
``` | ||
- Set environment | ||
```shell | ||
source ../iree-build/.env && export PYTHONPATH | ||
``` | ||
For more information, refer to the [IREE documentation](https://iree.dev/building-from-source/getting-started/#python-bindings) | ||
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### Overall flow | ||
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1. Symlink all scripts and mlir/irpa files in your build dir. | ||
- Symlink `iree-build-dir/tools` inside `tuning`. | ||
- Symlink ML model MLIR and weights based on `unet.sh`. | ||
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2. Copy the attention/matmul spec as `config.mlir` in the tuning dir. | ||
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3. Temporarily comment out all the existing configs in `config.mlir`. | ||
- Example: | ||
```mlir | ||
// , @match_mmt_2048x10240x1280 -> @apply_op_config | ||
// , @match_mmt_2048x1280x5120 -> @apply_op_config | ||
// , @match_mmt_2048x1280x1280 -> @apply_op_config | ||
``` | ||
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4. Compile a baseline unet | ||
```shell | ||
./unet.sh winograd unet.mlir -o unet_baseline.vmfb --iree-hal-dump-executable-files-to=dump-winograd | ||
``` | ||
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5. Find the matmul to tune and copy the `*_benchmark.mlir` file to the build dir. | ||
```shell | ||
cp dump-winograd/*_141_*benchmark.mlir ./141.mlir | ||
``` | ||
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6. Run the tuning script. | ||
- Example: | ||
```shell | ||
python punet_autotune.py 141.mlir --devices=hip://GPU-0,hip://GPU-4 --num-candidates=1024 | ||
``` | ||
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7. Check the winner candidate in `result_summary.log`, find and copy the transform spec. | ||
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8. Paste the transform spec into the `config.mlir` and uncomment them. | ||
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9. Add the match function to the entry point in `config.mlir` | ||
- Example: | ||
```mlir | ||
@match_something -> @apply_op_config | ||
``` |
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