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+# Springbok Model Execution Repository
+
+This project contains ML model codegen and execution libraries/examples. The
+artifacts built from this project is targeted for RISC-V 32-bit baremetal machine
+(Springbok).
+
+## Prerequisite
+
+If you get this project from Project Shodan manifest, you are all set. If not,
+you need to have following projects as well to build the project successfully.
+
+* [Springbok BSP](https://spacebeaker.googlesource.com/shodan/sw/vec): Under `<dir>/sw/vec`
+* [IREE](https://github.com/google/iree): Under `<dir>/toolchain/iree`
+* [Public ML models](https://spacebeaker.googlesource.com/shodan/ml-models-public): Under `<dir>/ml/ml-models-public`
+* RISC-V 32-bit crosscompile toolchain
+
+This project needs to be at `<dir>/sw/vec_iree`
+
+## Code structure
+
+* build_tools: Utility scripts for the project
+* cmake: CMake Macros for the project
+* native_log: BSP support for the Linux userspace emulation
+* samples: Codegen and execution of ML models based on IREE
+  * device: Device HAL driver library
+  * float_model: float model examples
+  * quant_model: quantized model examples
+  * simple_vec_mul: Point-wise vector multiplication examples
+  * util: Runtime utility library for model execution
+
+## Build the project
+
+If you are running from Project Shodan repo, you can build the artifacts with `m iree`.
+If you download this project alone, you need to download/build IREE's host compiler,
+then at the top level directory
+
+```bash
+  cmake -B <output dir> -G Ninja \
+     -DCMAKE_TOOLCHAIN_FILE="$(realpath sw/vec_iree/cmake/riscv_iree.cmake)" \
+     -DCMAKE_BUILD_TYPE=MinSizeRel \
+     -DIREE_HOST_BINARY_ROOT="$(IREE_COMPILER_DIR)/install" \
+     -DRISCV_TOOLCHAIN_ROOT=$(TOOLCHAINRV32_PATH) \
+     <dir>/sw/vec_iree
+  cmake --build <output dir> --target all
+```
+
+## Run the executables
+
+You can run QEMU or RENODE emulation with the built executables. In Shodan repo,
+`qemu_sim_springbok` for QEMU emulation, and `sim_springbok` for Renode simulation.
+Out-of-repo emulation is possible but require more steps.
+
+## Test the executables
+
+In Shodan, this project utilizes LLVM `lit` and `FileCheck` to test the ML
+executable performance. The tests are defined in the *_test.txt files under
+`samples`. To run the test, at the Shodan top level directory
+
+```bash
+lit --path <Filecheck dir> -a sw/vec_iree/samples
+```
+
+Filecheck in Debian testing is under `/usr/lib/llvm-11/bin`
+
+Add `-D FEATURES=internal` to enable the internal model tests. Add `-D RUNNER=qemu`
+to enable the qemu tests.