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    <title>memory_scope</title>
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        <a xmlns="http://www.w3.org/1999/xhtml" id="memory_scope"></a>
        <h1>memory_scope</h1>
        <p>
            Identify if memory_scope applies to work-items in a work-group or work-items of a kernel(s).
        </p>
      </div>
      <div class="refsect2">
        <a id="synopsis"></a>
        <h3>
        </h3>
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                <td align="left">
memory_scope
                        </td>
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      <div class="refsect1">
        <a id="description"></a>
        <h2>Description</h2>
        <p>
            The OpenCL C programming language implements a subset of the C11 atomics (refer to section 
            7.17 of the C11 specification) and synchronization operations. These operations play a special 
            role in making assignments in one work-item visible to another.
            A synchronization operation on 
            one or more memory locations is either an acquire operation, a release operation, or both an 
            acquire and release operation. (The C11 consume operation is not supported.)
            A synchronization operation without an associated memory 
            location is a fence and can be either an acquire fence, a release fence or both an acquire and 
            release fence. In addition, there are relaxed atomic operations, which are not synchronization 
            operations, and atomic read-modify-write operations which have special characteristics
        </p>
        <p>
            The enumerated type <span class="type">memory_scope</span> specifies 
            whether the memory ordering constraints given by 
            <a class="citerefentry" href="memory_order.html"><span class="citerefentry"><span class="refentrytitle">memory_order</span></span></a> 
            apply to work-items in a work-group or work-items of a kernel(s) 
            executing on the device or across devices (in the case of shared virtual memory).
            Its enumeration constants are as follows:
        </p>
        <p>
</p>
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          <p>
            <code class="code">     <code class="constant">memory_scope_work_item</code><br />
     <code class="constant">memory_scope_work_group</code><br />
     <code class="constant">memory_scope_device</code><br />
     <code class="constant">memory_scope_all_svm_devices</code><br />
</code>
          </p>
        </div>
        <p>
        </p>
        <p>
            The <code class="constant">memory_scope_work_item</code> value for 
            <span class="type">memory_scope</span> can only be used with 
            <a class="citerefentry" href="atomic_work_item_fence.html"><span class="citerefentry"><span class="refentrytitle">atomic_work_item_fence</span></span></a>
            with <code class="varname">flags</code> set to 
            <code class="constant">CLK_IMAGE_MEM_FENCE</code>.
        </p>
        <p>
            The memory scope should only be used when performing atomic operations to global memory. 
            Atomic operations to local memory only guarantee memory ordering in the work-group not 
            across work-groups and therefore ignore the <span class="type">memory_scope</span> value.
        </p>
      </div>
      <div class="refsect1">
        <a id="notes"></a>
        <h2>Notes</h2>
        <p>
        </p>
      </div>
      <div class="refsect1">
        <a id="specification"></a>
        <h2>Specification</h2>
        <p>
            <img src="pdficon_small1.gif" />

            <a href="https://www.khronos.org/registry/cl/specs/opencl-2.1-openclc.pdf#page=105" target="OpenCL Spec">OpenCL Specification</a>
        </p>
      </div>
      <div class="refsect1">
        <a id="seealso"></a>
        <h2>Also see</h2>
        <p>
            <a class="citerefentry" href="atomicFunctions.html"><span class="citerefentry"><span class="refentrytitle">Atomic Functions</span></span></a>,
            <a class="citerefentry" href="memory_order.html"><span class="citerefentry"><span class="refentrytitle">memory_order</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 © 2007-2015 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,
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