# oneAPI Level Zero

This repository contains the following components of oneAPI:

- Copies of the Level Zero Specification API C/C++ header files
- Level Zero Loader
- Level Zero Validation Layer
- Level Zero Tracing Layer

This project is part of the larger [oneAPI](https://www.oneapi.com/) project.

See the [oneAPI specification](https://spec.oneapi.com/versions/latest/introduction.html) for more information about the oneAPI project.

See the [Level Zero specification](https://spec.oneapi.com/level-zero/latest/index.html) for more information about Level Zero.

See the [Level Zero specification repo](https://github.com/oneapi-src/level-zero-spec) for contributing to the specification.

Level Zero API versions are listed in the `ze_api_version_t` enumeration, located in the
[ze_api.h](./include/ze_api.h) file.

# Building and Installing

Project is defined using [CMake](https://cmake.org/).

## Linux

### General

```
mkdir build
cd build
cmake ..
cmake --build . --config Release
cmake --build . --config Release --target package
cmake --build . --config Release --target install
```

### Ubuntu with Docker

```bash
mkdir build
mkdir -p .ccache

docker run \
  --rm \
  -v $PWD:$PWD \
  -w $PWD/build \
  -e CCACHE_DIR=$PWD/.ccache \
  -e CCACHE_BASEDIR=$PWD \
  $(docker build -q \
      --build-arg UID=$(id -u) \
      --build-arg GID=$(id -g) \
      --build-arg IMAGE_VERSION=eoan \
      - < docker/build-ubuntu.Dockerfile) \
  cmake \
    -G Ninja \
    -D CMAKE_C_COMPILER_LAUNCHER=ccache \
    -D CMAKE_CXX_COMPILER_LAUNCHER=ccache \
    -D CMAKE_BUILD_TYPE=Release \
    ..

docker run \
  --rm \
  -v $PWD:$PWD \
  -w $PWD/build \
  -e CCACHE_DIR=$PWD/.ccache \
  -e CCACHE_BASEDIR=$PWD \
  $(docker build -q \
      --build-arg UID=$(id -u) \
      --build-arg GID=$(id -g) \
      --build-arg IMAGE_VERSION=eoan \
      - < docker/build-ubuntu.Dockerfile) \
  cmake --build . --config Release
```

# Debug Trace
The Level Zero Loader has the ability to print warnings and errors which occur within the internals of the Level Zero Loader itself.

To enable this debug tracing feature, set the environment variable `ZE_ENABLE_LOADER_DEBUG_TRACE=1`.

This will enforce the Loader to print all errors whether fatal or non-fatal to stderr with the PREFIX `ZE_LOADER_DEBUG_TRACE:`.

# Contributing

See [CONTRIBUTING](CONTRIBUTING.md) for more information.

# License

Distributed under the MIT license. See [LICENSE](LICENSE) for more information.

# Security

See Intel's [Security Center](https://www.intel.com/content/www/us/en/security-center/default.html) for information on how to report a potential security issue or vulnerability.

See also [SECURITY](SECURITY.md).
