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       clGetDeviceInfo - Get information about an OpenCL device.

       cl_int clGetDeviceInfo(cl_device_id device, cl_device_info param_name,
                              size_t param_value_size, void *param_value,
                              size_t *param_value_size_ret);


           May be a device returned by clGetDeviceIDs(3clc) or a sub-device created by
           clCreateSubDevices(3clc). If device is a sub-device, the specific information for the
           sub-device will be returned. The information that can be queried using clGetDeviceInfo
           is specified in the table below.

           A pointer to memory location where appropriate values for a given param_name as
           specified in the table below will be returned. If param_value is NULL, it is ignored.

           Specifies the size in bytes of memory pointed to by param_value. This size in bytes
           must be ≥ size of return type specified in the table below.

           Returns the actual size in bytes of data being queried by param_value. If
           param_value_size_ret is NULL, it is ignored.

           An enumeration constant that identifies the device information being queried. It can
           be one of the values as specified in the table below.


       CL_DEVICE_PROFILE: The platform profile returns the profile that is implemented by the
       OpenCL framework. If the platform profile returned is FULL_PROFILE, the OpenCL framework
       will support devices that are FULL_PROFILE and may also support devices that are
       EMBEDDED_PROFILE. The compiler must be available for all devices i.e.
       CL_DEVICE_COMPILER_AVAILABLE is CL_TRUE. If the platform profile returned is
       EMBEDDED_PROFILE, then devices that are only EMBEDDED_PROFILE are supported.

       The device queries described the table above should return the same information for a
       root-level device i.e. a device returned by clGetDeviceIDs(3clc) and any sub-devices
       created from this device except for the following queries:



               ·   CL_DEVICE_PARENT_DEVICE.RE

                   ·   CL_DEVICE_PARTITION_TYPE.RE

                       ·   CL_DEVICE_REFERENCE_COUNT.RE


       clGetDeviceInfo returns CL_SUCCESS if the function is executed successfully. Otherwise, it
       returns the following:

       ·   CL_INVALID_DEVICE if device is not valid.

       ·   CL_INVALID_VALUE if param_name is not one of the supported values or if size in bytes
           specified by param_value_size is less than size of return type as shown in the table
           above and param_value is not a NULL value or if param_name is a value that is
           available as an extension and the corresponding extension is not supported by the

       ·   CL_OUT_OF_RESOURCES if there is a failure to allocate resources required by the OpenCL
           implementation on the device.

       ·   CL_OUT_OF_HOST_MEMORY if there is a failure to allocate resources required by the
           OpenCL implementation on the host.


       OpenCL Specification[1]


       clGetDeviceIDs(3clc), cl_khr_fp64(3clc), constant(3clc), clCreateCommandQueue(3clc),
       clRetainCommandQueue(3clc), clEnqueueNDRangeKernel(3clc)


       The Khronos Group


       Copyright © 2007-2011 The Khronos Group Inc.
       Permission is hereby granted, free of charge, to any person obtaining a copy of this
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       portions of the Materials.


        1. OpenCL Specification
           page 37, section 4.2 - Querying Devices