sdk/2.2/docs/man/html/clGetDeviceInfo.html - external/github.com/KhronosGroup/OpenCL-Registry - Git at Google

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 </script></head>
 <body class="manpage">
 <div id="header">
 <h1>clGetDeviceInfo(3) Manual Page</h1>
 <h2 id="_name">Name</h2>
 <div class="sectionbody">
 <p>clGetDeviceInfo - Query specific information about a device</p>
 </div>
 </div>
 <div id="content">
 <div class="sect1">
 <h2 id="_c_specification">C Specification</h2>
 <div class="sectionbody">
 <div class="paragraph">
 <p>To get specific information about an OpenCL device, call the function:</p>
 </div>
 <div id="clGetDeviceInfo" class="listingblock">
 <div class="content">
 <pre class="highlight"><code class="language-c++" data-lang="c++">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);</code></pre>
 </div>
 </div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_parameters">Parameters</h2>
 <div class="sectionbody">
 <div class="ulist">
 <ul>
 <li>
 <p><em>device</em> may be a device returned by <strong>clGetDeviceIDs</strong> or a sub-device
 created by <strong>clCreateSubDevices</strong>.
 If <em>device</em> is a sub-device, the specific information for the sub-device
 will be returned.
 The information that can be queried using <strong>clGetDeviceInfo</strong> is specified in
 the <a href="https://www.khronos.org/registry/OpenCL/specs/2.2/html/OpenCL_API.html#device-queries-table" target="_blank" rel="noopener">Device Queries</a> table.</p>
 </li>
 <li>
 <p><em>param_name</em> is an enumeration constant that identifies the device
 information being queried.
 It can be one of the following values as specified in the
 <a href="https://www.khronos.org/registry/OpenCL/specs/2.2/html/OpenCL_API.html#device-queries-table" target="_blank" rel="noopener">Device Queries</a> table.</p>
 </li>
 <li>
 <p><em>param_value</em> is a pointer to memory location where appropriate values for a
 given <em>param_name</em>, as specified in the <a href="https://www.khronos.org/registry/OpenCL/specs/2.2/html/OpenCL_API.html#device-queries-table" target="_blank" rel="noopener">Device
 Queries</a> table, will be returned.
 If <em>param_value</em> is <code>NULL</code>, it is ignored.</p>
 </li>
 <li>
 <p><em>param_value_size</em> specifies the size in bytes of memory pointed to by
 <em>param_value</em>.
 This size in bytes must be ≥ size of return type specified in the
 <a href="https://www.khronos.org/registry/OpenCL/specs/2.2/html/OpenCL_API.html#device-queries-table" target="_blank" rel="noopener">Device Queries</a> table.</p>
 </li>
 <li>
 <p><em>param_value_size_ret</em> returns the actual size in bytes of data being
 queried by <em>param_name</em>.
 If <em>param_value_size_ret</em> is <code>NULL</code>, it is ignored.</p>
 </li>
 </ul>
 </div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_description">Description</h2>
 <div class="sectionbody">
 <div class="paragraph">
 <p>The device queries described in the <a href="https://www.khronos.org/registry/OpenCL/specs/2.2/html/OpenCL_API.html#device-queries-table" target="_blank" rel="noopener">Device Queries</a>
 table should return the same information for a root-level device i.e. a
 device returned by <strong>clGetDeviceIDs</strong> and any sub-devices created from this
 device except for the following queries:</p>
 </div>
 <div class="ulist">
 <ul>
 <li>
 <p><code>CL_&#8203;DEVICE_&#8203;GLOBAL_&#8203;MEM_&#8203;CACHE_&#8203;SIZE</code></p>
 </li>
 <li>
 <p><code>CL_&#8203;DEVICE_&#8203;BUILT_&#8203;IN_&#8203;KERNELS</code></p>
 </li>
 <li>
 <p><code>CL_&#8203;DEVICE_&#8203;PARENT_&#8203;DEVICE</code></p>
 </li>
 <li>
 <p><code>CL_&#8203;DEVICE_&#8203;PARTITION_&#8203;TYPE</code></p>
 </li>
 <li>
 <p><code>CL_&#8203;DEVICE_&#8203;REFERENCE_&#8203;COUNT</code></p>
 </li>
 </ul>
 </div>
 <table id="device-queries-table" class="tableblock frame-all grid-all stretch">
 <caption class="title">Table 1. List of supported param_names by <a href="https://www.khronos.org/registry/OpenCL/specs/2.2/html/OpenCL_API.html#clGetDeviceInfo" class="bare" target="_blank" rel="noopener">https://www.khronos.org/registry/OpenCL/specs/2.2/html/OpenCL_API.html#clGetDeviceInfo</a></caption>
 <colgroup>
 <col style="width: 30%;">
 <col style="width: 20%;">
 <col style="width: 50%;">
 </colgroup>
 <thead>
 <tr>
 <th class="tableblock halign-left valign-top"><strong>cl_device_info</strong></th>
 <th class="tableblock halign-left valign-top">Return Type</th>
 <th class="tableblock halign-left valign-top">Description</th>
 </tr>
 </thead>
 <tbody>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;TYPE</code></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_device_type</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">The OpenCL device type.
         Currently supported values are:</p>
 <p class="tableblock">        <code>CL_&#8203;DEVICE_&#8203;TYPE_&#8203;CPU</code>, <code>CL_&#8203;DEVICE_&#8203;TYPE_&#8203;GPU</code>, <code>CL_&#8203;DEVICE_&#8203;TYPE_&#8203;ACCELERATOR</code>,
         <code>CL_&#8203;DEVICE_&#8203;TYPE_&#8203;DEFAULT</code>, a combination of the above types, or
         <code>CL_&#8203;DEVICE_&#8203;TYPE_&#8203;CUSTOM</code>.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;VENDOR_&#8203;ID</code><sup>4</sup></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_uint</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">A unique device vendor identifier.
         An example of a unique device identifier could be the PCIe ID.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;MAX_&#8203;COMPUTE_&#8203;UNITS</code></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_uint</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">The number of parallel compute units on the OpenCL device.
         A work-group executes on a single compute unit.
         The minimum value is 1.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;MAX_&#8203;WORK_&#8203;ITEM_&#8203;DIMENSIONS</code></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_uint</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Maximum dimensions that specify the global and local work-item IDs
         used by the data parallel execution model. (Refer to
         <strong>clEnqueueNDRangeKernel</strong>).
         The minimum value is 3 for devices that are not of type
         <code>CL_&#8203;DEVICE_&#8203;TYPE_&#8203;CUSTOM</code>.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;MAX_&#8203;WORK_&#8203;ITEM_&#8203;SIZES</code></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">size_t []</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Maximum number of work-items that can be specified in each dimension
         of the work-group to <strong>clEnqueueNDRangeKernel</strong>.</p>
 <p class="tableblock">        Returns <em>n</em> size_t entries, where <em>n</em> is the value returned by the
         query for <code>CL_&#8203;DEVICE_&#8203;MAX_&#8203;WORK_&#8203;ITEM_&#8203;DIMENSIONS</code>.</p>
 <p class="tableblock">        The minimum value is (1, 1, 1) for devices that are not of type
         <code>CL_&#8203;DEVICE_&#8203;TYPE_&#8203;CUSTOM</code>.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;MAX_&#8203;WORK_&#8203;GROUP_&#8203;SIZE</code></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">size_t</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Maximum number of work-items in a work-group that a device is
         capable of executing on a single compute unit, for any given
         kernel-instance running on the device. (Refer also to
         <strong>clEnqueueNDRangeKernel</strong> and <code>CL_&#8203;KERNEL_&#8203;WORK_&#8203;GROUP_&#8203;SIZE</code> ).
         The minimum value is 1.
         The returned value is an upper limit and will not necessarily
         maximize performance.
         This maximum may be larger than supported by a specific kernel
         (refer to the <code>CL_&#8203;KERNEL_&#8203;WORK_&#8203;GROUP_&#8203;SIZE</code> query of <strong>clGetKernelWorkGroupInfo</strong>).</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;PREFERRED_&#8203;VECTOR_&#8203;WIDTH_&#8203;CHAR</code>  <br>
   <code>CL_&#8203;DEVICE_&#8203;PREFERRED_&#8203;VECTOR_&#8203;WIDTH_&#8203;SHORT</code> <br>
   <code>CL_&#8203;DEVICE_&#8203;PREFERRED_&#8203;VECTOR_&#8203;WIDTH_&#8203;INT</code>   <br>
   <code>CL_&#8203;DEVICE_&#8203;PREFERRED_&#8203;VECTOR_&#8203;WIDTH_&#8203;LONG</code>  <br>
   <code>CL_&#8203;DEVICE_&#8203;PREFERRED_&#8203;VECTOR_&#8203;WIDTH_&#8203;FLOAT</code> <br>
   <code>CL_&#8203;DEVICE_&#8203;PREFERRED_&#8203;VECTOR_&#8203;WIDTH_&#8203;DOUBLE</code><br>
   <code>CL_&#8203;DEVICE_&#8203;PREFERRED_&#8203;VECTOR_&#8203;WIDTH_&#8203;HALF</code></p>
 <p class="tableblock">  <code>CL_&#8203;DEVICE_&#8203;PREFERRED_&#8203;VECTOR_&#8203;WIDTH_&#8203;HALF</code> is <a href="https://www.khronos.org/registry/OpenCL/specs/2.2/html/OpenCL_API.html#unified-spec" target="_blank" rel="noopener">missing before</a>
   version 1.1.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_uint</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Preferred native vector width size for built-in scalar types that
         can be put into vectors.
         The vector width is defined as the number of scalar elements that
         can be stored in the vector.</p>
 <p class="tableblock">        If double precision is not supported,
         <code>CL_&#8203;DEVICE_&#8203;PREFERRED_&#8203;VECTOR_&#8203;WIDTH_&#8203;DOUBLE</code> must return 0.</p>
 <p class="tableblock">        If the <strong>cl_khr_fp16</strong> extension is not supported,
         <code>CL_&#8203;DEVICE_&#8203;PREFERRED_&#8203;VECTOR_&#8203;WIDTH_&#8203;HALF</code> must return 0.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;NATIVE_&#8203;VECTOR_&#8203;WIDTH_&#8203;CHAR</code>  <br>
   <code>CL_&#8203;DEVICE_&#8203;NATIVE_&#8203;VECTOR_&#8203;WIDTH_&#8203;SHORT</code> <br>
   <code>CL_&#8203;DEVICE_&#8203;NATIVE_&#8203;VECTOR_&#8203;WIDTH_&#8203;INT</code>   <br>
   <code>CL_&#8203;DEVICE_&#8203;NATIVE_&#8203;VECTOR_&#8203;WIDTH_&#8203;LONG</code>  <br>
   <code>CL_&#8203;DEVICE_&#8203;NATIVE_&#8203;VECTOR_&#8203;WIDTH_&#8203;FLOAT</code> <br>
   <code>CL_&#8203;DEVICE_&#8203;NATIVE_&#8203;VECTOR_&#8203;WIDTH_&#8203;DOUBLE</code><br>
   <code>CL_&#8203;DEVICE_&#8203;NATIVE_&#8203;VECTOR_&#8203;WIDTH_&#8203;HALF</code></p>
 <p class="tableblock"><a href="#unified-spec">Missing before</a> version 1.1.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_uint</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Returns the native ISA vector width.
         The vector width is defined as the number of scalar elements that
         can be stored in the vector.</p>
 <p class="tableblock">        If double precision is not supported,
         <code>CL_&#8203;DEVICE_&#8203;NATIVE_&#8203;VECTOR_&#8203;WIDTH_&#8203;DOUBLE</code> must return 0.</p>
 <p class="tableblock">        If the <strong>cl_khr_fp16</strong> extension is not supported,
         <code>CL_&#8203;DEVICE_&#8203;NATIVE_&#8203;VECTOR_&#8203;WIDTH_&#8203;HALF</code> must return 0.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;MAX_&#8203;CLOCK_&#8203;FREQUENCY</code></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_uint</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Clock frequency of the device in MHz.
         The meaning of this value is implementation-defined.
         For devices with multiple clock domains, the clock frequency for any
         of the clock domains may be returned.
         For devices that dynamically change frequency for power or thermal
         reasons, the returned clock frequency may be any valid frequency.
         Note: This definition is <a href="https://www.khronos.org/registry/OpenCL/specs/2.2/html/OpenCL_API.html#unified-spec" target="_blank" rel="noopener">missing before</a> version 2.2.</p>
 <p class="tableblock">        Maximum configured clock frequency of the device in MHz.
         Note: This definition is <a href="https://www.khronos.org/registry/OpenCL/specs/2.2/html/OpenCL_API.html#unified-spec" target="_blank" rel="noopener">deprecated by</a> version 2.2.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;ADDRESS_&#8203;BITS</code></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_uint</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">The default compute device address space size of the global address
         space specified as an unsigned integer value in bits.
         Currently supported values are 32 or 64 bits.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;MAX_&#8203;MEM_&#8203;ALLOC_&#8203;SIZE</code></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_ulong</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Max size of memory object allocation in bytes.
         The minimum value is max(min(1024 × 1024 × 1024, 1/4<sup>th</sup>
         of <code>CL_&#8203;DEVICE_&#8203;GLOBAL_&#8203;MEM_&#8203;SIZE</code>), 32 × 1024 × 1024) for
         devices that are not of type <code>CL_&#8203;DEVICE_&#8203;TYPE_&#8203;CUSTOM</code>.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;IMAGE_&#8203;SUPPORT</code></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_bool</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Is <code>CL_&#8203;TRUE</code> if images are supported by the OpenCL device and <code>CL_&#8203;FALSE</code>
         otherwise.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;MAX_&#8203;READ_&#8203;IMAGE_&#8203;ARGS</code><sup>5</sup></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_uint</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Max number of image objects arguments of a kernel declared with the
         read_only qualifier.
         The minimum value is 128 if <code>CL_&#8203;DEVICE_&#8203;IMAGE_&#8203;SUPPORT</code> is <code>CL_&#8203;TRUE</code>, the
         value is 0 otherwise.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;MAX_&#8203;WRITE_&#8203;IMAGE_&#8203;ARGS</code></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_uint</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Max number of image objects arguments of a kernel declared with the
         write_only qualifier.
         The minimum value is 64 if <code>CL_&#8203;DEVICE_&#8203;IMAGE_&#8203;SUPPORT</code> is <code>CL_&#8203;TRUE</code>, the
         value is 0 otherwise.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;MAX_&#8203;READ_&#8203;WRITE_&#8203;IMAGE_&#8203;ARGS</code><sup>6</sup></p>
 <p class="tableblock"><a href="#unified-spec">Missing before</a> version 2.0.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_uint</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Max number of image objects arguments of a kernel declared with the
         write_only or read_write qualifier.
         The minimum value is 64 if <code>CL_&#8203;DEVICE_&#8203;IMAGE_&#8203;SUPPORT</code> is <code>CL_&#8203;TRUE</code>, the
         value is 0 otherwise.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;IL_&#8203;VERSION</code></p>
 <p class="tableblock"><a href="#unified-spec">Missing before</a> version 2.1.
 Also see extension <strong>cl_khr_il_program</strong>.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">char[]</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">The intermediate languages that can be supported by
         <strong>clCreateProgramWithIL</strong> for this device.
         Returns a space-separated list of IL version strings of the form
         &lt;IL_Prefix&gt;_&lt;Major_Version&gt;.&lt;Minor_Version&gt;.
         For OpenCL 2.1 and 2.2, SPIR-V is a required IL prefix.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;IMAGE2D_&#8203;MAX_&#8203;WIDTH</code></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">size_t</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Max width of 2D image or 1D image not created from a buffer object
         in pixels.</p>
 <p class="tableblock">        The minimum value is 16384 if <code>CL_&#8203;DEVICE_&#8203;IMAGE_&#8203;SUPPORT</code> is <code>CL_&#8203;TRUE</code>,
         the value is 0 otherwise.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;IMAGE2D_&#8203;MAX_&#8203;HEIGHT</code></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">size_t</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Max height of 2D image in pixels.</p>
 <p class="tableblock">        The minimum value is 16384 if <code>CL_&#8203;DEVICE_&#8203;IMAGE_&#8203;SUPPORT</code> is <code>CL_&#8203;TRUE</code>,
         the value is 0 otherwise.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;IMAGE3D_&#8203;MAX_&#8203;WIDTH</code></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">size_t</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Max width of 3D image in pixels.</p>
 <p class="tableblock">        The minimum value is 2048 if <code>CL_&#8203;DEVICE_&#8203;IMAGE_&#8203;SUPPORT</code> is <code>CL_&#8203;TRUE</code>,
         the value is 0 otherwise.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;IMAGE3D_&#8203;MAX_&#8203;HEIGHT</code></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">size_t</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Max height of 3D image in pixels.</p>
 <p class="tableblock">        The minimum value is 2048 if <code>CL_&#8203;DEVICE_&#8203;IMAGE_&#8203;SUPPORT</code> is <code>CL_&#8203;TRUE</code>,
         the value is 0 otherwise.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;IMAGE3D_&#8203;MAX_&#8203;DEPTH</code></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">size_t</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Max depth of 3D image in pixels.</p>
 <p class="tableblock">        The minimum value is 2048 if <code>CL_&#8203;DEVICE_&#8203;IMAGE_&#8203;SUPPORT</code> is <code>CL_&#8203;TRUE</code>,
         the value is 0 otherwise.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;IMAGE_&#8203;MAX_&#8203;BUFFER_&#8203;SIZE</code></p>
 <p class="tableblock"><a href="#unified-spec">Missing before</a> version 1.2.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">size_t</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Max number of pixels for a 1D image created from a buffer object.</p>
 <p class="tableblock">        The minimum value is 65536 if <code>CL_&#8203;DEVICE_&#8203;IMAGE_&#8203;SUPPORT</code> is <code>CL_&#8203;TRUE</code>,
         the value is 0 otherwise.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;IMAGE_&#8203;MAX_&#8203;ARRAY_&#8203;SIZE</code></p>
 <p class="tableblock"><a href="#unified-spec">Missing before</a> version 1.2.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">size_t</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Max number of images in a 1D or 2D image array.</p>
 <p class="tableblock">        The minimum value is 2048 if <code>CL_&#8203;DEVICE_&#8203;IMAGE_&#8203;SUPPORT</code> is <code>CL_&#8203;TRUE</code>,
         the value is 0 otherwise.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;MAX_&#8203;SAMPLERS</code></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_uint</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Maximum number of samplers that can be used in a kernel.</p>
 <p class="tableblock">        The minimum value is 16 if <code>CL_&#8203;DEVICE_&#8203;IMAGE_&#8203;SUPPORT</code> is <code>CL_&#8203;TRUE</code>,
         the value is 0 otherwise.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;IMAGE_&#8203;PITCH_&#8203;ALIGNMENT</code></p>
 <p class="tableblock"><a href="#unified-spec">Missing before</a> version 2.0.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_uint</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">The row pitch alignment size in pixels for 2D images created from a
         buffer.
         The value returned must be a power of 2.</p>
 <p class="tableblock">        If the device does not support images, this value must be 0.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;IMAGE_&#8203;BASE_&#8203;ADDRESS_&#8203;ALIGNMENT</code></p>
 <p class="tableblock"><a href="#unified-spec">Missing before</a> version 2.0.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_uint</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">This query should be used when a 2D image is created from a buffer
         which was created using <code>CL_&#8203;MEM_&#8203;USE_&#8203;HOST_&#8203;PTR</code>.
         The value returned must be a power of 2.</p>
 <p class="tableblock">        This query specifies the minimum alignment in pixels of the host_ptr
         specified to <strong>clCreateBuffer</strong>.</p>
 <p class="tableblock">        If the device does not support images, this value must be 0.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;MAX_&#8203;PIPE_&#8203;ARGS</code></p>
 <p class="tableblock"><a href="#unified-spec">Missing before</a> version 2.0.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_uint</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">The maximum number of pipe objects that can be passed as arguments
         to a kernel.
         The minimum value is 16.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;PIPE_&#8203;MAX_&#8203;ACTIVE_&#8203;RESERVATIONS</code></p>
 <p class="tableblock"><a href="#unified-spec">Missing before</a> version 2.0.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_uint</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">The maximum number of reservations that can be active for a pipe per
         work-item in a kernel.
         A work-group reservation is counted as one reservation per
         work-item.
         The minimum value is 1.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;PIPE_&#8203;MAX_&#8203;PACKET_&#8203;SIZE</code></p>
 <p class="tableblock"><a href="#unified-spec">Missing before</a> version 2.0.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_uint</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">The maximum size of pipe packet in bytes.
         The minimum value is 1024 bytes.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;MAX_&#8203;PARAMETER_&#8203;SIZE</code></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">size_t</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Max size in bytes of all arguments that can be passed to a kernel.</p>
 <p class="tableblock">        The minimum value is 1024 for devices that are not of type
         <code>CL_&#8203;DEVICE_&#8203;TYPE_&#8203;CUSTOM</code>.
         For this minimum value, only a maximum of 128 arguments can be
         passed to a kernel</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;MEM_&#8203;BASE_&#8203;ADDR_&#8203;ALIGN</code></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_uint</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Alignment requirement (in bits) for sub-buffer offsets.
         The minimum value is the size (in bits) of the largest OpenCL
         built-in data type supported by the device (long16 in FULL profile,
         long16 or int16 in EMBEDDED profile) for devices that are not of
         type <code>CL_&#8203;DEVICE_&#8203;TYPE_&#8203;CUSTOM</code>.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;MIN_&#8203;DATA_&#8203;TYPE_&#8203;ALIGN_&#8203;SIZE</code></p>
 <p class="tableblock"><a href="#unified-spec">Deprecated by</a> version 1.2.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_uint</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">The minimum value is the size (in bytes) of the largest OpenCL data
         type supported by the device (<code>long16</code> in FULL profile, <code>long16</code> or
         <code>int16</code> in EMBEDDED profile).</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;SINGLE_&#8203;FP_&#8203;CONFIG</code><sup>7</sup></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_device_fp_config</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Describes single precision floating-point capability of the device.
         This is a bit-field that describes one or more of the following
         values:</p>
 <p class="tableblock">        <code>CL_&#8203;FP_&#8203;DENORM</code> - denorms are supported</p>
 <p class="tableblock">        <code>CL_&#8203;FP_&#8203;INF_&#8203;NAN</code> - INF and quiet NaNs are supported.</p>
 <p class="tableblock">        <code>CL_&#8203;FP_&#8203;ROUND_&#8203;TO_&#8203;NEAREST</code>-- round to nearest even rounding mode
         supported</p>
 <p class="tableblock">        <code>CL_&#8203;FP_&#8203;ROUND_&#8203;TO_&#8203;ZERO</code> - round to zero rounding mode supported</p>
 <p class="tableblock">        <code>CL_&#8203;FP_&#8203;ROUND_&#8203;TO_&#8203;INF</code> - round to positive and negative infinity
         rounding modes supported</p>
 <p class="tableblock">        <code>CL_&#8203;FP_&#8203;FMA</code> - IEEE754-2008 fused multiply-add is supported.</p>
 <p class="tableblock">        <code>CL_&#8203;FP_&#8203;CORRECTLY_&#8203;ROUNDED_&#8203;DIVIDE_&#8203;SQRT</code> - divide and sqrt are correctly
         rounded as defined by the IEEE754 specification.</p>
 <p class="tableblock">        <code>CL_&#8203;FP_&#8203;SOFT_&#8203;FLOAT</code> - Basic floating-point operations (such as
         addition, subtraction, multiplication) are implemented in software.</p>
 <p class="tableblock">        For the full profile, the mandated minimum floating-point capability
         for devices that are not of type <code>CL_&#8203;DEVICE_&#8203;TYPE_&#8203;CUSTOM</code> is:
         <code>CL_&#8203;FP_&#8203;ROUND_&#8203;TO_&#8203;NEAREST</code> | <code>CL_&#8203;FP_&#8203;INF_&#8203;NAN</code>.</p>
 <p class="tableblock">        For the embedded profile, see the
         <a href="https://www.khronos.org/registry/OpenCL/specs/2.2/html/OpenCL_API.html#embedded-profile-single-fp-config-requirements" target="_blank" rel="noopener">dedicated table</a>.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;DOUBLE_&#8203;FP_&#8203;CONFIG</code><sup>8</sup></p>
 <p class="tableblock"><a href="#unified-spec">Missing before</a> version 1.2.
 Also see extension <strong>cl_khr_fp64</strong>.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_device_fp_config</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Describes double precision floating-point capability of the OpenCL
         device.
         This is a bit-field that describes one or more of the following
         values:</p>
 <p class="tableblock">        <code>CL_&#8203;FP_&#8203;DENORM</code> - denorms are supported</p>
 <p class="tableblock">        <code>CL_&#8203;FP_&#8203;INF_&#8203;NAN</code> - INF and NaNs are supported.</p>
 <p class="tableblock">        <code>CL_&#8203;FP_&#8203;ROUND_&#8203;TO_&#8203;NEAREST</code> - round to nearest even rounding mode
         supported.</p>
 <p class="tableblock">        <code>CL_&#8203;FP_&#8203;ROUND_&#8203;TO_&#8203;ZERO</code> - round to zero rounding mode supported.</p>
 <p class="tableblock">        <code>CL_&#8203;FP_&#8203;ROUND_&#8203;TO_&#8203;INF</code> - round to positive and negative infinity
         rounding modes supported.</p>
 <p class="tableblock">        <code>CL_&#8203;FP_&#8203;FMA</code> - IEEE754-2008 fused multiply-add is supported.</p>
 <p class="tableblock">        <code>CL_&#8203;FP_&#8203;SOFT_&#8203;FLOAT</code> - Basic floating-point operations (such as
         addition, subtraction, multiplication) are implemented in software.</p>
 <p class="tableblock">        Double precision is an optional feature so the mandated minimum
         double precision floating-point capability is 0.</p>
 <p class="tableblock">        If double precision is supported by the device, then the minimum
         double precision floating-point capability must be:<br>
         <code>CL_&#8203;FP_&#8203;FMA</code> |<br>
         <code>CL_&#8203;FP_&#8203;ROUND_&#8203;TO_&#8203;NEAREST</code> |<br>
         <code>CL_&#8203;FP_&#8203;INF_&#8203;NAN</code> |<br>
         <code>CL_&#8203;FP_&#8203;DENORM</code>.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;GLOBAL_&#8203;MEM_&#8203;CACHE_&#8203;TYPE</code></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_device_mem_cache_type</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Type of global memory cache supported.
         Valid values are: <code>CL_&#8203;NONE</code>, <code>CL_&#8203;READ_&#8203;ONLY_&#8203;CACHE</code>, and
         <code>CL_&#8203;READ_&#8203;WRITE_&#8203;CACHE</code>.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;GLOBAL_&#8203;MEM_&#8203;CACHELINE_&#8203;SIZE</code></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_uint</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Size of global memory cache line in bytes.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;GLOBAL_&#8203;MEM_&#8203;CACHE_&#8203;SIZE</code></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_ulong</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Size of global memory cache in bytes.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;GLOBAL_&#8203;MEM_&#8203;SIZE</code></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_ulong</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Size of global device memory in bytes.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;MAX_&#8203;CONSTANT_&#8203;BUFFER_&#8203;SIZE</code></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_ulong</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Max size in bytes of a constant buffer allocation.
         The minimum value is 64 KB for devices that are not of type
         <code>CL_&#8203;DEVICE_&#8203;TYPE_&#8203;CUSTOM</code>.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;MAX_&#8203;CONSTANT_&#8203;ARGS</code></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_uint</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Max number of arguments declared with the <code>__constant</code> qualifier
         in a kernel.
         The minimum value is 8 for devices that are not of type
         <code>CL_&#8203;DEVICE_&#8203;TYPE_&#8203;CUSTOM</code>.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;MAX_&#8203;GLOBAL_&#8203;VARIABLE_&#8203;SIZE</code></p>
 <p class="tableblock"><a href="#unified-spec">Missing before</a> version 2.0.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">size_t</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">The maximum number of bytes of storage that may be allocated for any
         single variable in program scope or inside a function in an OpenCL
         kernel language declared in the global address space.</p>
 <p class="tableblock">        The minimum value is 64 KB.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;GLOBAL_&#8203;VARIABLE_&#8203;PREFERRED_&#8203;TOTAL_&#8203;SIZE</code></p>
 <p class="tableblock"><a href="#unified-spec">Missing before</a> version 2.0.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">size_t</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Maximum preferred total size, in bytes, of all program variables in
         the global address space.
         This is a performance hint.
         An implementation may place such variables in storage with optimized
         device access.
         This query returns the capacity of such storage.
         The minimum value is 0.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;LOCAL_&#8203;MEM_&#8203;TYPE</code></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_device_local_mem_type</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Type of local memory supported.
         This can be set to <code>CL_&#8203;LOCAL</code> implying dedicated local memory storage
         such as SRAM , or <code>CL_&#8203;GLOBAL</code>.</p>
 <p class="tableblock">        For custom devices, <code>CL_&#8203;NONE</code> can also be returned indicating no local
         memory support.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;LOCAL_&#8203;MEM_&#8203;SIZE</code></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_ulong</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Size of local memory region in bytes.
         The minimum value is 32 KB for devices that are not of type
         <code>CL_&#8203;DEVICE_&#8203;TYPE_&#8203;CUSTOM</code>.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;ERROR_&#8203;CORRECTION_&#8203;SUPPORT</code></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_bool</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Is <code>CL_&#8203;TRUE</code> if the device implements error correction for all
         accesses to compute device memory (global and constant).
         Is <code>CL_&#8203;FALSE</code> if the device does not implement such error correction.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;HOST_&#8203;UNIFIED_&#8203;MEMORY</code></p>
 <p class="tableblock"><a href="#unified-spec">Missing before</a> version 1.1 and <a href="#unified-spec">deprecated by</a> version 2.0.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_bool</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Is <code>CL_&#8203;TRUE</code> if the device and the host have a unified memory subsystem
         and is <code>CL_&#8203;FALSE</code> otherwise.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;PROFILING_&#8203;TIMER_&#8203;RESOLUTION</code></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">size_t</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Describes the resolution of device timer.
         This is measured in nanoseconds.
         Refer to <a href="https://www.khronos.org/registry/OpenCL/specs/2.2/html/OpenCL_API.html#profiling-operations" target="_blank" rel="noopener">Profiling Operations</a> for details.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;ENDIAN_&#8203;LITTLE</code></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_bool</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Is <code>CL_&#8203;TRUE</code> if the OpenCL device is a little endian device and
         <code>CL_&#8203;FALSE</code> otherwise</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;AVAILABLE</code></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_bool</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Is <code>CL_&#8203;TRUE</code> if the device is available and <code>CL_&#8203;FALSE</code> otherwise.
         A device is considered to be available if the device can be expected
         to successfully execute commands enqueued to the device.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;COMPILER_&#8203;AVAILABLE</code></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_bool</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Is <code>CL_&#8203;FALSE</code> if the implementation does not have a compiler available
         to compile the program source.</p>
 <p class="tableblock">        Is <code>CL_&#8203;TRUE</code> if the compiler is available.
         This can be <code>CL_&#8203;FALSE</code> for the embedded platform profile only.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;LINKER_&#8203;AVAILABLE</code></p>
 <p class="tableblock"><a href="#unified-spec">Missing before</a> version 1.2.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_bool</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Is <code>CL_&#8203;FALSE</code> if the implementation does not have a linker available.
         Is <code>CL_&#8203;TRUE</code> if the linker is available.</p>
 <p class="tableblock">        This can be <code>CL_&#8203;FALSE</code> for the embedded platform profile only.</p>
 <p class="tableblock">        This must be <code>CL_&#8203;TRUE</code> if <code>CL_&#8203;DEVICE_&#8203;COMPILER_&#8203;AVAILABLE</code> is <code>CL_&#8203;TRUE</code>.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;EXECUTION_&#8203;CAPABILITIES</code></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_device_exec_capabilities</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Describes the execution capabilities of the device.
         This is a bit-field that describes one or more of the following
         values:</p>
 <p class="tableblock">        <code>CL_&#8203;EXEC_&#8203;KERNEL</code> - The OpenCL device can execute OpenCL kernels.</p>
 <p class="tableblock">        <code>CL_&#8203;EXEC_&#8203;NATIVE_&#8203;KERNEL</code> - The OpenCL device can execute native
         kernels.</p>
 <p class="tableblock">        The mandated minimum capability is: <code>CL_&#8203;EXEC_&#8203;KERNEL</code>.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;QUEUE_&#8203;PROPERTIES</code></p>
 <p class="tableblock"><a href="#unified-spec">Deprecated by</a> version 2.0.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_command_queue_properties</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">See description of <code>CL_&#8203;DEVICE_&#8203;QUEUE_&#8203;ON_&#8203;HOST_&#8203;PROPERTIES</code>.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;QUEUE_&#8203;ON_&#8203;HOST_&#8203;PROPERTIES</code></p>
 <p class="tableblock"><a href="#unified-spec">Missing before</a> version 2.0.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_command_queue_properties</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Describes the on host command-queue properties supported by the
         device.
         This is a bit-field that describes one or more of the following
         values:</p>
 <p class="tableblock">        <code>CL_&#8203;QUEUE_&#8203;OUT_&#8203;OF_&#8203;ORDER_&#8203;EXEC_&#8203;MODE_&#8203;ENABLE</code><br>
         <code>CL_&#8203;QUEUE_&#8203;PROFILING_&#8203;ENABLE</code></p>
 <p class="tableblock">        These properties are described in the <a href="https://www.khronos.org/registry/OpenCL/specs/2.2/html/OpenCL_API.html#queue-properties-table" target="_blank" rel="noopener">Queue Properties</a> table.</p>
 <p class="tableblock">        The mandated minimum capability is: <code>CL_&#8203;QUEUE_&#8203;PROFILING_&#8203;ENABLE</code>.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;QUEUE_&#8203;ON_&#8203;DEVICE_&#8203;PROPERTIES</code></p>
 <p class="tableblock"><a href="#unified-spec">Missing before</a> version 2.0.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_command_queue_properties</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Describes the on device command-queue properties supported by the
         device.
         This is a bit-field that describes one or more of the following
         values:</p>
 <p class="tableblock">        <code>CL_&#8203;QUEUE_&#8203;OUT_&#8203;OF_&#8203;ORDER_&#8203;EXEC_&#8203;MODE_&#8203;ENABLE</code><br>
         <code>CL_&#8203;QUEUE_&#8203;PROFILING_&#8203;ENABLE</code></p>
 <p class="tableblock">        These properties are described in the <a href="https://www.khronos.org/registry/OpenCL/specs/2.2/html/OpenCL_API.html#queue-properties-table" target="_blank" rel="noopener">Queue Properties</a> table.</p>
 <p class="tableblock">        The mandated minimum capability is:
         <code>CL_&#8203;QUEUE_&#8203;OUT_&#8203;OF_&#8203;ORDER_&#8203;EXEC_&#8203;MODE_&#8203;ENABLE</code> | <code>CL_&#8203;QUEUE_&#8203;PROFILING_&#8203;ENABLE</code>.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;QUEUE_&#8203;ON_&#8203;DEVICE_&#8203;PREFERRED_&#8203;SIZE</code></p>
 <p class="tableblock"><a href="#unified-spec">Missing before</a> version 2.0.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_uint</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">The size of the device queue in bytes preferred by the
         implementation.
         Applications should use this size for the device queue to ensure
         good performance.</p>
 <p class="tableblock">        The minimum value is 16 KB</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;QUEUE_&#8203;ON_&#8203;DEVICE_&#8203;MAX_&#8203;SIZE</code></p>
 <p class="tableblock"><a href="#unified-spec">Missing before</a> version 2.0.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_uint</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">The max. size of the device queue in bytes.
         The minimum value is 256 KB for the full profile and 64 KB for the
         embedded profile</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;MAX_&#8203;ON_&#8203;DEVICE_&#8203;QUEUES</code></p>
 <p class="tableblock"><a href="#unified-spec">Missing before</a> version 2.0.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_uint</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">The maximum number of device queues that can be created for this
         device in a single context.</p>
 <p class="tableblock">        The minimum value is 1.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;MAX_&#8203;ON_&#8203;DEVICE_&#8203;EVENTS</code></p>
 <p class="tableblock"><a href="#unified-spec">Missing before</a> version 2.0.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_uint</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">The maximum number of events in use by a device queue.
         These refer to events returned by the <code>enqueue_</code> built-in functions
         to a device queue or user events returned by the <code>create_user_event</code>
         built-in function that have not been released.</p>
 <p class="tableblock">        The minimum value is 1024.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;BUILT_&#8203;IN_&#8203;KERNELS</code></p>
 <p class="tableblock"><a href="#unified-spec">Missing before</a> version 1.2.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">char[]</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">A semi-colon separated list of built-in kernels supported by the
         device.
         An empty string is returned if no built-in kernels are supported by
         the device.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;PLATFORM</code></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_platform_id</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">The platform associated with this device.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;NAME</code></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">char[]</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Device name string.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;VENDOR</code></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">char[]</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Vendor name string.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DRIVER_&#8203;VERSION</code></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">char[]</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">OpenCL software driver version string.
         Follows a vendor-specific format.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;PROFILE</code><sup>9</sup></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">char[]</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">OpenCL profile string.
         Returns the profile name supported by the device.
         The profile name returned can be one of the following strings:</p>
 <p class="tableblock">        FULL_PROFILE - if the device supports the OpenCL specification
         (functionality defined as part of the core specification and does
         not require any extensions to be supported).</p>
 <p class="tableblock">        EMBEDDED_PROFILE - if the device supports the OpenCL embedded
         profile.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;VERSION</code></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">char[]</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">OpenCL version string.
         Returns the OpenCL version supported by the device. This version
         string has the following format:</p>
 <p class="tableblock">        <em>OpenCL&lt;space&gt;&lt;major_version.minor_version&gt;&lt;space&gt;&lt;vendor-specific
         information&gt;</em></p>
 <p class="tableblock">        The major_version.minor_version value returned will be one of 1.0,
         1.1, 1.2, 2.0, 2.1 or 2.2.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;OPENCL_&#8203;C_&#8203;VERSION</code></p>
 <p class="tableblock"><a href="#unified-spec">Missing before</a> version 1.1.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">char[]</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">OpenCL C version string.
         Returns the highest OpenCL C version supported by the compiler for
         this device that is not of type <code>CL_&#8203;DEVICE_&#8203;TYPE_&#8203;CUSTOM</code>.
         This version string has the following format:</p>
 <p class="tableblock">        <em>OpenCL&lt;space&gt;C&lt;space&gt;&lt;major_version.minor_version&gt;&lt;space&gt;&lt;vendor-specific
         information&gt;</em></p>
 <p class="tableblock">        The major_version.minor_version value returned must be 2.0 if
         <code>CL_&#8203;DEVICE_&#8203;VERSION</code> is OpenCL 2.0, OpenCL 2.1, or OpenCL 2.2.</p>
 <p class="tableblock">        The major_version.minor_version value returned must be 1.2 if
         <code>CL_&#8203;DEVICE_&#8203;VERSION</code> is OpenCL 1.2.</p>
 <p class="tableblock">        The major_version.minor_version value returned must be 1.1 if
         <code>CL_&#8203;DEVICE_&#8203;VERSION</code> is OpenCL 1.1.</p>
 <p class="tableblock">        The major_version.minor_version value returned can be 1.0 or 1.1 if
         <code>CL_&#8203;DEVICE_&#8203;VERSION</code> is OpenCL 1.0.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;EXTENSIONS</code></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">char[]</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Returns a space separated list of extension names (the extension
         names themselves do not contain any spaces) supported by the device.
         The list of extension names may include Khronos approved extension
         names and vendor specified extension names.</p>
 <p class="tableblock">        The following Khronos extension names must be returned by
         all devices that support OpenCL 1.1:</p>
 <p class="tableblock">        <strong>cl_khr_byte_addressable_store</strong><br>
         <strong>cl_khr_global_int32_base_atomics</strong><br>
         <strong>cl_khr_global_int32_extended_atomics</strong><br>
         <strong>cl_khr_local_int32_base_atomics</strong><br>
         <strong>cl_khr_local_int32_extended_atomics</strong></p>
 <p class="tableblock">        Additionally, the following Khronos extension names must be returned
         by all devices that support OpenCL 1.2:</p>
 <p class="tableblock">        <strong>cl_khr_fp64</strong> (if double precision is supported)</p>
 <p class="tableblock">        Additionally, the following Khronos extension names must be returned
         by all devices that support OpenCL 2.0:</p>
 <p class="tableblock">        <strong>cl_khr_3d_image_writes</strong><br>
         <strong>cl_khr_depth_images</strong><br>
         <strong>cl_khr_image2d_from_buffer</strong></p>
 <p class="tableblock">        Please refer to the OpenCL Extension Specification or vendor
         provided documentation for a detailed description of these extensions.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;PRINTF_&#8203;BUFFER_&#8203;SIZE</code></p>
 <p class="tableblock"><a href="#unified-spec">Missing before</a> version 1.2.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">size_t</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Maximum size in bytes of the internal buffer that holds the output
         of printf calls from a kernel.
         The minimum value for the FULL profile is 1 MB.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;PREFERRED_&#8203;INTEROP_&#8203;USER_&#8203;SYNC</code></p>
 <p class="tableblock"><a href="#unified-spec">Missing before</a> version 1.2.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_bool</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Is <code>CL_&#8203;TRUE</code> if the devices preference is for the user to be
         responsible for synchronization, when sharing memory objects between
         OpenCL and other APIs such as DirectX, <code>CL_&#8203;FALSE</code> if the device /
         implementation has a performant path for performing synchronization
         of memory object shared between OpenCL and other APIs such as
         DirectX.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;PARENT_&#8203;DEVICE</code></p>
 <p class="tableblock"><a href="#unified-spec">Missing before</a> version 1.2.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_device_id</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Returns the cl_device_id of the parent device to which this
         sub-device belongs.
         If <em>device</em> is a root-level device, a <code>NULL</code> value is returned.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;PARTITION_&#8203;MAX_&#8203;SUB_&#8203;DEVICES</code></p>
 <p class="tableblock"><a href="#unified-spec">Missing before</a> version 1.2.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_uint</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Returns the maximum number of sub-devices that can be created when a
         device is partitioned.</p>
 <p class="tableblock">        The value returned cannot exceed <code>CL_&#8203;DEVICE_&#8203;MAX_&#8203;COMPUTE_&#8203;UNITS</code>.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;PARTITION_&#8203;PROPERTIES</code></p>
 <p class="tableblock"><a href="#unified-spec">Missing before</a> version 1.2.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_device_partition_ property[]</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Returns the list of partition types supported by <em>device</em>.
         This is an array of cl_device_partition_property values drawn from
         the following list:</p>
 <p class="tableblock">        <code>CL_&#8203;DEVICE_&#8203;PARTITION_&#8203;EQUALLY</code><br>
         <code>CL_&#8203;DEVICE_&#8203;PARTITION_&#8203;BY_&#8203;COUNTS</code><br>
         <code>CL_&#8203;DEVICE_&#8203;PARTITION_&#8203;BY_&#8203;AFFINITY_&#8203;DOMAIN</code></p>
 <p class="tableblock">        If the device cannot be partitioned (i.e. there is no partitioning
         scheme supported by the device that will return at least two
         subdevices), a value of 0 will be returned.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;PARTITION_&#8203;AFFINITY_&#8203;DOMAIN</code></p>
 <p class="tableblock"><a href="#unified-spec">Missing before</a> version 1.2.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_device_affinity_ domain</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Returns the list of supported affinity domains for partitioning the
         device using <code>CL_&#8203;DEVICE_&#8203;PARTITION_&#8203;BY_&#8203;AFFINITY_&#8203;DOMAIN</code>.
         This is a bit-field that describes one or more of the following
         values:</p>
 <p class="tableblock">        <code>CL_&#8203;DEVICE_&#8203;AFFINITY_&#8203;DOMAIN_&#8203;NUMA</code><br>
         <code>CL_&#8203;DEVICE_&#8203;AFFINITY_&#8203;DOMAIN_&#8203;L4_&#8203;CACHE</code><br>
         <code>CL_&#8203;DEVICE_&#8203;AFFINITY_&#8203;DOMAIN_&#8203;L3_&#8203;CACHE</code><br>
         <code>CL_&#8203;DEVICE_&#8203;AFFINITY_&#8203;DOMAIN_&#8203;L2_&#8203;CACHE</code><br>
         <code>CL_&#8203;DEVICE_&#8203;AFFINITY_&#8203;DOMAIN_&#8203;L1_&#8203;CACHE</code><br>
         <code>CL_&#8203;DEVICE_&#8203;AFFINITY_&#8203;DOMAIN_&#8203;NEXT_&#8203;PARTITIONABLE</code></p>
 <p class="tableblock">        If the device does not support any affinity domains, a value of 0
         will be returned.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;PARTITION_&#8203;TYPE</code></p>
 <p class="tableblock"><a href="#unified-spec">Missing before</a> version 1.2.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_device_partition_property[]</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Returns the properties argument specified in <strong>clCreateSubDevices</strong> if
         device is a sub-device.
         In the case where the properties argument to <strong>clCreateSubDevices</strong> is
         <code>CL_&#8203;DEVICE_&#8203;PARTITION_&#8203;BY_&#8203;AFFINITY_&#8203;DOMAIN</code>,
         <code>CL_&#8203;DEVICE_&#8203;AFFINITY_&#8203;DOMAIN_&#8203;NEXT_&#8203;PARTITIONABLE</code>, the affinity domain
         used to perform the partition will be returned.
         This can be one of the following values:</p>
 <p class="tableblock">        <code>CL_&#8203;DEVICE_&#8203;AFFINITY_&#8203;DOMAIN_&#8203;NUMA</code><br>
         <code>CL_&#8203;DEVICE_&#8203;AFFINITY_&#8203;DOMAIN_&#8203;L4_&#8203;CACHE</code><br>
         <code>CL_&#8203;DEVICE_&#8203;AFFINITY_&#8203;DOMAIN_&#8203;L3_&#8203;CACHE</code><br>
         <code>CL_&#8203;DEVICE_&#8203;AFFINITY_&#8203;DOMAIN_&#8203;L2_&#8203;CACHE</code><br>
         <code>CL_&#8203;DEVICE_&#8203;AFFINITY_&#8203;DOMAIN_&#8203;L1_&#8203;CACHE</code></p>
 <p class="tableblock">        Otherwise the implementation may either return a
         <em>param_value_size_ret</em> of 0 i.e. there is no partition type
         associated with device or can return a property value of 0 (where 0
         is used to terminate the partition property list) in the memory that
         <em>param_value</em> points to.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;REFERENCE_&#8203;COUNT</code></p>
 <p class="tableblock"><a href="#unified-spec">Missing before</a> version 1.2.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_uint</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Returns the <em>device</em> reference count.
         If the device is a root-level device, a reference count of one is
         returned.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;SVM_&#8203;CAPABILITIES</code></p>
 <p class="tableblock"><a href="#unified-spec">Missing before</a> version 2.0.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_device_svm_capabilities</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Describes the various shared virtual memory (a.k.a. SVM) memory
         allocation types the device supports.
         Coarse-grain SVM allocations are required to be supported by all
         OpenCL 2.0 devices.
         This is a bit-field that describes a combination of the following
         values:</p>
 <p class="tableblock">        <code>CL_&#8203;DEVICE_&#8203;SVM_&#8203;COARSE_&#8203;GRAIN_&#8203;BUFFER</code> - Support for coarse-grain buffer
         sharing using <strong>clSVMAlloc</strong>.
         Memory consistency is guaranteed at synchronization points and the
         host must use calls to <strong>clEnqueueMapBuffer</strong> and
         <strong>clEnqueueUnmapMemObject</strong>.</p>
 <p class="tableblock">        <code>CL_&#8203;DEVICE_&#8203;SVM_&#8203;FINE_&#8203;GRAIN_&#8203;BUFFER</code> - Support for fine-grain buffer
         sharing using <strong>clSVMAlloc</strong>.
         Memory consistency is guaranteed at synchronization points without
         need for <strong>clEnqueueMapBuffer</strong> and <strong>clEnqueueUnmapMemObject</strong>.</p>
 <p class="tableblock">        <code>CL_&#8203;DEVICE_&#8203;SVM_&#8203;FINE_&#8203;GRAIN_&#8203;SYSTEM</code> - Support for sharing the host&#8217;s
         entire virtual memory including memory allocated using <strong>malloc</strong>.
         Memory consistency is guaranteed at synchronization points.</p>
 <p class="tableblock">        <code>CL_&#8203;DEVICE_&#8203;SVM_&#8203;ATOMICS</code> - Support for the OpenCL 2.0 atomic
         operations that provide memory consistency across the host and all
         OpenCL devices supporting fine-grain SVM allocations.</p>
 <p class="tableblock">        The mandated minimum capability is
         <code>CL_&#8203;DEVICE_&#8203;SVM_&#8203;COARSE_&#8203;GRAIN_&#8203;BUFFER</code>.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;PREFERRED_&#8203;PLATFORM_&#8203;ATOMIC_&#8203;ALIGNMENT</code></p>
 <p class="tableblock"><a href="#unified-spec">Missing before</a> version 2.0.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_uint</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Returns the value representing the preferred alignment in bytes for
         OpenCL 2.0 fine-grained SVM atomic types.
         This query can return 0 which indicates that the preferred alignment
         is aligned to the natural size of the type.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;PREFERRED_&#8203;GLOBAL_&#8203;ATOMIC_&#8203;ALIGNMENT</code></p>
 <p class="tableblock"><a href="#unified-spec">Missing before</a> version 2.0.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_uint</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Returns the value representing the preferred alignment in bytes for
         OpenCL 2.0 atomic types to global memory.
         This query can return 0 which indicates that the preferred alignment
         is aligned to the natural size of the type.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;PREFERRED_&#8203;LOCAL_&#8203;ATOMIC_&#8203;ALIGNMENT</code></p>
 <p class="tableblock"><a href="#unified-spec">Missing before</a> version 2.0.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_uint</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Returns the value representing the preferred alignment in bytes for
         OpenCL 2.0 atomic types to local memory.
         This query can return 0 which indicates that the preferred alignment
         is aligned to the natural size of the type.</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;MAX_&#8203;NUM_&#8203;SUB_&#8203;GROUPS</code></p>
 <p class="tableblock"><a href="#unified-spec">Missing before</a> version 2.1.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_uint</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Maximum number of sub-groups in a work-group that a device is
         capable of executing on a single compute unit, for any given
         kernel-instance running on the device.
         The minimum value is 1.
         (Refer also to <strong>clGetKernelSubGroupInfo</strong>.)</p></td>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_&#8203;DEVICE_&#8203;SUB_&#8203;GROUP_&#8203;INDEPENDENT_&#8203;FORWARD_&#8203;PROGRESS</code></p>
 <p class="tableblock"><a href="#unified-spec">Missing before</a> version 2.1.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">cl_bool</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Is <code>CL_&#8203;TRUE</code> if this device supports independent forward progress of
         sub-groups, <code>CL_&#8203;FALSE</code> otherwise.
         If <strong>cl_khr_subgroups</strong> is supported by the device this must return
         <code>CL_&#8203;TRUE</code>.</p></td>
 </tr>
 </tbody>
 </table>
 <div class="dlist">
 <dl>
 <dt class="hdlist1">4</dt>
 <dd>
 <p>OpenCL adopters must report a valid vendor ID for their implementation.
 If there is no valid PCI vendor ID defined for the physical device,
 implementations must obtain a Khronos vendor ID. This is a unique
 identifier greater than the largest PCI vendor ID(0x10000) and is
 representable by a <code>cl_uint</code>. Khronos vendor IDs are synchronized across
 APIs by utilizing Vulkan&#8217;s vk.xml as the central Khronos vendor ID registry.
 An ID must be reserved here prior to use in OpenCL, regardless of whether a
 vendor implements Vulkan. Only once the ID has been allotted may it be
 exposed to OpenCL by proposing a merge request against cl.xml, in the master
 branch of the OpenCL-Docs project. The merge must define a new enumerant by
 adding an <code>&lt;enum&gt;</code> tag to the <code>cl_khronos_vendor_id</code> <code>&lt;enums&gt;</code> tag, with the
 <code>&lt;value&gt;</code> attribute set as the acquired Khronos vendor ID. The <code>&lt;name&gt;</code>
 attribute must identify the vendor/adopter, and be of the form
 <code>CL_KHRONOS_VENDOR_ID_&lt;vendor&gt;</code>.</p>
 </dd>
 <dt class="hdlist1">5</dt>
 <dd>
 <p>A kernel that uses an image argument with the write_only or read_write
 image qualifier may result in additional read_only images resources being
 created internally by an implementation.
 The internally created read_only image resources will count against the max
 supported read image arguments given by <code>CL_&#8203;DEVICE_&#8203;MAX_&#8203;READ_&#8203;IMAGE_&#8203;ARGS</code>.
 Enqueuing a kernel that requires more images than the implementation can
 support will result in a <code>CL_&#8203;OUT_&#8203;OF_&#8203;RESOURCES</code> error being returned.</p>
 </dd>
 <dt class="hdlist1">6</dt>
 <dd>
 <p>NOTE: <code>CL_&#8203;DEVICE_&#8203;MAX_&#8203;WRITE_&#8203;IMAGE_&#8203;ARGS</code> is only there for backward
 compatibility.
 <code>CL_&#8203;DEVICE_&#8203;MAX_&#8203;READ_&#8203;WRITE_&#8203;IMAGE_&#8203;ARGS</code> should be used instead.</p>
 </dd>
 <dt class="hdlist1">7</dt>
 <dd>
 <p>The optional rounding modes should be included as a device capability
 only if it is supported natively.
 All explicit conversion functions with specific rounding modes must
 still operate correctly.</p>
 </dd>
 <dt class="hdlist1">8</dt>
 <dd>
 <p>The optional rounding modes should be included as a device capability
 only if it is supported natively.
 All explicit conversion functions with specific rounding modes must
 still operate correctly.</p>
 </dd>
 <dt class="hdlist1">9</dt>
 <dd>
 <p>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.
 <code>CL_&#8203;DEVICE_&#8203;COMPILER_&#8203;AVAILABLE</code> is <code>CL_&#8203;TRUE</code>.
 If the platform profile returned is EMBEDDED_PROFILE, then devices that
 are only EMBEDDED_PROFILE are supported.</p>
 </dd>
 </dl>
 </div>
 <div class="paragraph">
 <p><strong>clGetDeviceInfo</strong> returns <code>CL_&#8203;SUCCESS</code> if the function is executed
 successfully.
 Otherwise, it returns one of the following errors:</p>
 </div>
 <div class="ulist">
 <ul>
 <li>
 <p><code>CL_&#8203;INVALID_&#8203;DEVICE</code> if <em>device</em> is not a valid device.</p>
 </li>
 <li>
 <p><code>CL_&#8203;INVALID_&#8203;VALUE</code> if <em>param_name</em> is not one of the supported values or
 if size in bytes specified by <em>param_value_size</em> is &lt; size of return
 type as specified in the <a href="https://www.khronos.org/registry/OpenCL/specs/2.2/html/OpenCL_API.html#device-queries-table" target="_blank" rel="noopener">Device Queries</a> table
 and <em>param_value</em> is not a <code>NULL</code> value or if <em>param_name</em> is a value
 that is available as an extension and the corresponding extension is not
 supported by the device.</p>
 </li>
 <li>
 <p><code>CL_&#8203;OUT_&#8203;OF_&#8203;RESOURCES</code> if there is a failure to allocate resources required
 by the OpenCL implementation on the device.</p>
 </li>
 <li>
 <p><code>CL_&#8203;OUT_&#8203;OF_&#8203;HOST_&#8203;MEMORY</code> if there is a failure to allocate resources
 required by the OpenCL implementation on the host.</p>
 </li>
 </ul>
 </div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_see_also">See Also</h2>
 <div class="sectionbody">
 <div class="paragraph">
 <p><a href="cl_device_id.html">cl_device_id</a>, <a href="cl_device_info.html">cl_device_info</a></p>
 </div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_document_notes">Document Notes</h2>
 <div class="sectionbody">
 <div class="paragraph">
 <p>For more information, see the <a href="https://www.khronos.org/registry/OpenCL/specs/2.2/html/OpenCL_API.html#clGetDeviceInfo" target="_blank" rel="noopener">OpenCL Specification</a></p>
 </div>
 <div class="paragraph">
 <p>This page is extracted from the OpenCL Specification.
 Fixes and changes should be made to the Specification, not directly.</p>
 </div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_copyright">Copyright</h2>
 <div class="sectionbody">
 <div class="paragraph">
 <p>Copyright (c) 2014-2020 Khronos Group. This work is licensed under a
 <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank" rel="noopener">Creative Commons
 Attribution 4.0 International License</a>.</p>
 </div>
 </div>
 </div>
 </div>
 <div id="footer">
 <div id="footer-text">
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 Last updated 2020-03-27 04:16:11 -0700
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