993338a12d
Specifically, we use unranked memrefs which get passed as a fixed-size set of arguments/returns. One big caveat about this is that returning results isn't going to work. See TODO in LowerTensorLoadOp. This is far from enough runtime-wise, but it starts to demarcate a plausible layering. Notice for example how this removes the runtime-dependence from LowerRankedShapes. Eventually, we want to have an `npcomp_rt` or `npcomp_hal` dialect with its own set of runtime types that will supercede this. See comments in LowerTensorLoadOp for more direction about where this is going to evolve. |
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|---|---|---|
| include/npcomp | ||
| lib | ||
| python | ||
| python_native | ||
| test | ||
| tools | ||
| .clang-format | ||
| .gitignore | ||
| CMakeLists.txt | ||
| LICENSE | ||
| README.md | ||
| contributing.md | ||
README.md
npcomp - An aspirational MLIR based numpy compiler
This is a research prototype of MLIR dialects for representing numpy programs, and a set of reference tracing/compiler tools. The primary purpose at this point is to establish a solid modeling of restricted Python programs and Numpy based computations in MLIR. While this project will provide some reference implementations to prove the design, the intention is to align this with the broader set of tools that exist at this level of abstraction.
Design Notes
As I work through things, I've been jotting down some design notes:
- Type Extraction - April 15, 2020
- Ufunc modeling Part 1 - April 29, 2020
- Array funcs and op granularity - May 5, 2020
Quick start
LLVM_VERSION=10
export CC=clang-$LLVM_VERSION
export CXX=clang++-$LLVM_VERSION
export LDFLAGS=-fuse-ld=$(which ld.lld-$LLVM_VERSION)
export LLVM_SRC_DIR=/path/to/llvm-project
# Check out last known good commit.
(cd $LLVM_SRC_DIR && git checkout 310d32cb80a611e6384a921e85607fea05841f26)
./tools/install_mlir.sh
./tools/cmake_configure.sh
# ./tools/test_all.sh runs all of these commands.
cd build
ninja
ninja check-npcomp-opt
# Note: currently, python tests run separately
./python/run_tests.py
Interactive Use
The cmake configuration populates symlinks in the build/python directory
mirroring the source layout. This allows edit-run without rebuilding (unless
if files are added/removed).
Configuring the PYTHONPATH should be sufficient to run any interactive
tooling (python3, Jupyter/Colab, etc).
export PYTHONPATH="$(realpath build/python):$(realpath build/python_native)"
The run_tests.py script is special in that it sets up the PYTHONPATH
correctly when run.
Note that running the cmake_configure.sh script will also output a .env
file in the workspace folder with the correct PYTHONPATH set. This allows
tools like VSCode to work by default for debugging.
Things to look at:
python/npcomp/tracing/mlir_trace_test.py: Simple test case of tracing a function to an MLIR module.
Notes:
- Python sources are symlinked to the output directory at configure time. Adding sources will require a reconfigure. Editing should not.
- It is a very common issue to have both python 2.7 (aka. "python") and python 3.x (aka. "python3") on a system at a time (and we can only hope that one day this ends). Since the native library at development time binds to a specific version, if you try to run with a different python, you will get an error about the "native" module not being found.