  <span class="comment">//</span></div><div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;    <span class="comment">// Iterator over warp-level accumulator fragment</span></div><div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;    <span class="comment">//</span></div><div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;</div><div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;    <a class="code" href="c