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    <title>async_work_group_strided_copy</title>
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      <div xmlns="" class="refnamediv">
        <a xmlns="http://www.w3.org/1999/xhtml" id="async_work_group_copy"></a>
        <h1>async_work_group_strided_copy</h1>
        <p>
            Performs an async gather of <code xmlns="http://www.w3.org/1999/xhtml" class="varname">num_elements</code> <span xmlns="http://www.w3.org/1999/xhtml" class="type">gentype</span> elements from source to destination.
        </p>
      </div>
      <div class="refsynopsisdiv">
        <h2></h2>
        <div class="funcsynopsis">
          <table xmlns="" border="0" summary="Function synopsis" cellspacing="0" cellpadding="0">
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              <td>
                <code xmlns="http://www.w3.org/1999/xhtml" class="funcdef">
                    <a class="link" href="otherDataTypes.html" target="_top">event_t</a>
                    <strong class="fsfunc">                   
                        async_work_group_strided_copy
                    </strong>
                (</code>
                <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="local.html" target="_top">__local</a> gentype <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">*dst</var>, </td>
              </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td>const <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="global.html" target="_top">__global</a> gentype <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">*src</var>, </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="_top">size_t</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">num_gentypes</var>, </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="_top">size_t</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">src_stride</var>, </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="otherDataTypes.html" target="_top">event_t</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">event</var><code>)</code></td>
            </tr>
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        <div class="funcsynopsis">
          <table xmlns="" border="0" summary="Function synopsis" cellspacing="0" cellpadding="0">
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              <td>
                <code xmlns="http://www.w3.org/1999/xhtml" class="funcdef">
                    <a class="link" href="otherDataTypes.html" target="_top">event_t</a>
                    <strong class="fsfunc">                   
                        async_work_group_strided_copy
                    </strong>
                (</code>
                <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="global.html" target="_top">__global</a> gentype <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">*dst</var>, </td>
              </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td>const <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="local.html" target="_top">__local</a> gentype <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">*src</var>, </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="_top">size_t</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">num_gentypes</var>, </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="_top">size_t</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">dst_stride</var>, </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="otherDataTypes.html" target="_top">event_t</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">event</var><code>)</code></td>
            </tr>
          </table>
        </div>
      </div>
      <div class="refsect1">
        <a id="description"></a>
        <h2>Description</h2>
        <p>
            The OpenCL C programming language implements these functions that provide 
            asynchronous copies between global and local memory and a prefetch from global memory. 
        </p>
        <p>
            Perform an async gather of <code class="varname">num_gentypes</code> <span class="type">gentype</span> elements 
            from <code class="varname">src</code> to <code class="varname">dst</code>. The <code class="varname">src_stride</code> 
            is the stride in elements for each <span class="type">gentype</span> element read from <code class="varname">src</code>. 
            The <code class="varname">dst_stride</code> is the stride in elements for each <span class="type">gentype</span> element 
            written to <code class="varname">dst</code>. The async gather is performed by all work-items in a work-group
        </p>
        <p>
            This built-in function must therefore be encountered by all work-items in a work-group 
            executing the kernel with the same argument values; otherwise the results are undefined.
        </p>
        <p>      
            Returns an event object that can be used by 
            <a class="citerefentry" href="wait_group_events.html"><span class="citerefentry"><span class="refentrytitle">wait_group_events</span></span></a> to wait for the 
            async copy to finish. The <code class="varname">event</code> argument can also be used to associate the 
            <code class="function">async_work_group_strided_copy</code> with a previous async copy allowing an event 
            to be shared by multiple async copies; otherwise <code class="varname">event</code> should be zero.
        </p>
        <p>  
            If <code class="varname">event</code> argument is non-zero, the event object supplied in <code class="varname">event</code> 
            argument will be returned.
        </p>
        <p>  
            This function does not perform any implicit synchronization of source data such as using a
            <a class="citerefentry" href="barrier.html"><span class="citerefentry"><span class="refentrytitle">barrier</span></span></a> before performing the copy.
        </p>
        <p>
            The behavior of <code class="function">async_work_group_strided_copy</code> is undefined if 
            <code class="varname">src_stride</code> or <code class="varname">dst_stride</code> is 0, or if the 
            <code class="varname">src_stride</code> or <code class="varname">dst_stride</code> values cause the <code class="varname">src</code> or 
            <code class="varname">dst</code> pointers to exceed the upper bounds of the address space during the copy.
        </p>
      </div>
      <div class="refsect1">
        <a id="notes"></a>
        <h2>Notes</h2>
        <p>
      Returns an event object that can be used by <a class="citerefentry" href="wait_group_events.html"><span class="citerefentry"><span class="refentrytitle">wait_group_events</span></span></a> to wait for the async copy to finish.
      </p>
        <p>
      The generic type name <span class="type">gentype</span> indicates the built-in data types <span class="type">char</span>,  <span class="type">char{2|4|8|16}</span>, <span class="type">uchar</span>, <span class="type">uchar{2|4|8|16}</span>, <span class="type">short</span>, <span class="type">short{2|4|8|16}</span>, <span class="type">ushort</span>, <span class="type">ushort{2|4|8|16}</span>, <span class="type">int</span>, <span class="type">int{2|4|8|16}</span>, <span class="type">uint</span>, <span class="type">uint{2|4|8|16}</span>, <span class="type">long</span>, <span class="type">long{2|4|8|16}</span>, <span class="type">ulong</span>, <span class="type">ulong{2|4|8|16}</span> or <span class="type">float</span>, <span class="type">float{2|4|8|16}</span> as the type for the arguments unless otherwise stated.
        </p>
        <p>
        If extended with <a class="citerefentry" href="cl_khr_fp64.html"><span class="citerefentry"><span class="refentrytitle">cl_khr_fp64</span></span></a>, generic type name <span class="type">gentype</span> may indicate <span class="type">double</span> and <span class="type">double{2|4|8|16}</span> as arguments and return values. If extended with <a class="citerefentry" href="cl_khr_fp16.html"><span class="citerefentry"><span class="refentrytitle">cl_khr_fp16</span></span></a>, generic type name <span class="type">gentype</span> may indicate <span class="type">half</span> and <span class="type">half{2|4|8|16}</span> as arguments and return values. 
        </p>
      </div>
      <div class="refsect1">
        <a id="specification"></a>
        <h2>Specification</h2>
        <p>
            <img src="pdficon_small1.gif" />
                                                 
            <a href="http://www.khronos.org/registry/cl/specs/opencl-1.1.pdf#page=227" target="OpenCL Spec">OpenCL Specification</a>
        </p>
      </div>
      <div class="refsect1">
        <a id="seealso"></a>
        <h2>Also see</h2>
        <p>
            <a class="citerefentry" href="asyncCopyFunctions.html"><span class="citerefentry"><span class="refentrytitle">Async Copy and Prefetch  Functions</span></span></a>, 
<a class="citerefentry" href="wait_group_events.html"><span class="citerefentry"><span class="refentrytitle">wait_group_events</span></span></a>
        </p>
      </div>
      <div xmlns="" class="refsect3" lang="en" xml:lang="en"><a xmlns="http://www.w3.org/1999/xhtml" id="Copyright"></a><h4 xmlns="http://www.w3.org/1999/xhtml"></h4><img xmlns="http://www.w3.org/1999/xhtml" src="KhronosLogo.jpg" /><p xmlns="http://www.w3.org/1999/xhtml"></p>Copyright © 2007-2010 The Khronos Group Inc.
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and/or associated documentation files (the
"Materials"), to deal in the Materials without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Materials, and to
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