Instruction file imported from uxlfoundation/scikit-learn-intelex (.github/instructions/src.instructions.md). Copyright stays with the author.

src/* - Core C++/Cython Implementation

Name: src
Author: uxlfoundation

Purpose

Core C++/Cython implementation layer providing the foundation for the entire stack.

Key Files

daal4py.cpp/.h - Main Cython interface to oneDAL
*_builder.pyx - Model builder implementations (XGBoost, LightGBM, CatBoost conversion)
gettree.pyx - Tree model extraction utilities
mpi/ - Distributed computing infrastructure

Build Process

Rebuild after C++/Cython changes: python setup.py build_ext --inplace --force

Testing

mpirun -n 2 python -m pytest tests/test_daal4py_spmd_examples.py
pytest tests/test_model_builders.py
pytest tests/test_daal4py_serialization.py

For GitHub Copilot

See src/AGENTS.md for comprehensive information including:

C++/Cython architecture and memory management
GIL protection patterns and thread safety
MPI communication layer and distributed algorithms
Model builder interfaces for external frameworks

Related Instructions

general.instructions.md - Repository setup
build-config.instructions.md - Build system and compilation
onedal.instructions.md - Python bindings that src/ implements
daal4py.instructions.md - Higher-level API built on src/

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src

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src/* - Core C++/Cython Implementation

Purpose

Key Files

Build Process

Testing

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