CLINFO(1) | General Commands Manual | CLINFO(1) |
clinfo - show OpenCL platforms and devices
clinfo [options ...]
clinfo prints all available information about all OpenCL platforms available on the system and the devices they expose.
clinfo accepts the following options:
OpenCL 1.1, OpenCL 1.2, OpenCL 2.0, OpenCL 2.1, OpenCL 2.2.
Supported OpenCL extensions:
Some information is duplicated when available from multiple sources. Examples:
Some floating-point configuration flags may only be meaningful for specific precisions and/or specific OpenCL versions. For example, CL_FP_CORRECTLY_ROUNDED_DIVIDE_SQRT is only relevant for single precision in OpenCL 1.2 devices.
The implementation-defined behavior for NULL platform or context properties is tested for the following API calls:
Support for OpenCL 2.x properties is not fully tested.
Support for cl_khr_subgroup_named_barrier is experimental due to missing definitions in the official OpenCL headers.
Raw (machine-parsable) output is considered experimental, the output format might still undergo changes.
The properties of the ICD loader will also be queried if the clGetICDLoaderInfoOCLICD extension function is found.
Support for the properties exposed by cl_amd_copy_buffer_p2p is experimental.
Support for some (documented and undocumented) properties exposed by cl_amd_device_attribute_query is experimental (see also LIMITATIONS).
Support for the interop lists exposed by cl_intel_simultaneous_sharing is experimental.
The highest OpenCL version supported by the ICD loader is detected with some trivial heuristics (symbols found); a notice is output if this is lower than the highest platform OpenCL version, or if the detected version doesn't match the one declared by the ICD loader itself.
OpenCL provides no explicit mean to detect the supported version of any extension exposed by a device, which makes it impossible to determine a priori if it will be possible to successfully query a device about a specific property. Additionally, the actual size and meaning of some properties are not officially declared anywhere.
Most notably, this affects extensions such as cl_amd_device_attribute_query and cl_nv_device_attribute_query. Heuristics based on standard version support are partially used in the code to determine which version may be supported.
Properties which are known to be affected by these limitations include:
Please report any issues on the project tracker on GitHub.
2018-04-06 | clinfo 2.2.18.04.06 |