clinfo

Display all OpenCL information

$ clinfo

$ clinfo -l

$ clinfo --raw

$ clinfo --prop [CL_DEVICE_NAME]

$ clinfo --offline

clinfo [options]

clinfo displays detailed information about OpenCL platforms and devices available on the system. It queries the OpenCL runtime to report capabilities, memory sizes, supported features, and extensions.
The output includes information for each OpenCL platform (vendor implementation) and its devices (GPUs, CPUs, accelerators). Details include device type, compute units, memory sizes, supported OpenCL versions, and available extensions.
This information is essential for developing and debugging OpenCL applications, verifying driver installations, and understanding hardware capabilities for GPU computing tasks.

-l, --list

List platforms and devices only.

Raw output format.

Show all properties including unsupported.

Show offline devices.

Show specific property value.

Human-readable format (default).

Platform: Vendor, version, profile, extensions
Device: Type, vendor, compute units, frequencies
Memory: Global, local, constant memory sizes
Workgroup: Maximum sizes and dimensions
Image: Supported image formats and sizes
Extensions: Available OpenCL extensions

Requires OpenCL runtime and ICD (Installable Client Driver) loader installed. Output varies based on installed drivers; missing or outdated drivers may show incomplete information. clinfo only shows OpenCL devices, not CUDA or other compute APIs.

clinfo was developed as a diagnostic tool for the OpenCL ecosystem. OpenCL (Open Computing Language) was released by Apple and standardized by Khronos Group in 2009 as a framework for parallel programming across heterogeneous platforms. clinfo became an essential utility for developers and users to verify OpenCL setup and understand available compute capabilities.

nvidia-smi(1), glxinfo(1), vulkaninfo(1)