Installing Intel oneAPI Framework

Intel provides a streamlined installation process for the oneAPI Base Toolkit, which includes the compiler and all necessary frameworks for high-performance computing, including oneMKL for optimized matrix operations.

Installation Steps

Download the Installer Visit the Intel oneAPI Base Toolkit download page.
- Select the appropriate settings for your system (Linux/macOS/Windows).
- The website will generate a .sh installation script tailored to your configuration.
Run the Installer Execute the downloaded script with sudo privileges to ensure a system-wide installation:
```
sudo ./your-downloaded-script.sh
```
- Note: Without sudo, the libraries will be installed locally (e.g., /usr/local). My CMake configuration assumes a global installation (typically /opt/intel/oneapi). If you prefer a local install, you'll need to adjust the CMake paths accordingly.
Verify Installation After installation, confirm the toolkit is available by running:
```
source /opt/intel/oneapi/setvars.sh
icpx --version
```

You should see:

Intel(R) oneAPI DPC++/C++ Compiler <version>
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /opt/intel/oneapi/compiler/2025.3/bin/compiler
Configuration file: /opt/intel/oneapi/compiler/2025.3/bin/compiler/../icpx.cfg

Additional Step: Linux Only

The Intel oneAPI environment variables are not sourced automatically after installation. To simplify your workflow, you can add the following alias to your .bashrc or .zshrc file:

alias oneAPI='source /opt/intel/oneapi/setvars.sh --include-intel-llvm'

Usage

After adding the alias, reload your shell configuration:

source ~/.bashrc  # or source ~/.zshrc

Now, you can enable the oneAPI environment anytime by running:

oneAPI

Alternative: Auto-Source on Shell Startup

If you prefer to source the environment variables automatically for every new shell session, add this line to your .bashrc or .zshrc:

source /opt/intel/oneapi/setvars.sh --include-intel-llvm > /dev/null