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type="text/css"></style> <div id="ct" class="ct2 wp cl"> <div class="mn"> <div class="bm_haa cl"> <div class="bm_h cl"> <a href="http://www.oecr.com/portal.php?mod=rss&catid=58" class="y xi2 rss" target="_blank" title="RSS">订阅</a><h1 class="xs2">文章</h1> </div></div> <div class="kjkjb"> <div class="bm vw" style="margin-bottom:0;"> <div class="h hm"> <div class="zxtoux"><img src="http://www.oecr.com/uc_server/avatar.php?uid=54876&size=small" /></div> <h1 class="ph">美打破“太字节障碍” 创数据分类速度纪录 </h1> <p class="xg1"> 时间：2010-7-31 01:26<a class="zz" href="home.php?mod=space&uid=54876">作者：update</a> 阅读<em id="_viewnum">(1217)</em> 评论: 0</p> <div class="zxfb" ><a href="http://www.oecr.com/portal.php?mod=rss&catid=58" class="y xi2 rss" target="_blank" title="RSS">订阅</a></div> </div> <!--[diy=diysummarytop]--><div id="diysummarytop" class="area"></div><!--[/diy]--> <div class="s"> <div class="ss"><div><span>导读： </span>美国加州大学计算机科学家打破了“太字节（Terabyte）障碍”，创造了在60秒内对超过太字节数据进行分类的世界纪录。</div> </div> <!--[diy=diysummarybottom]--><div id="diysummarybottom" class="area"></div><!--[/diy]--> <div class="d"> <!--[diy=diycontenttop]--><div id="diycontenttop" class="area"></div><!--[/diy]--> <table cellpadding="0" cellspacing="0" class="vwtb"><tr><td id="article_content"><P><A href="http://www.oecr.com/data/attachment/portal/201007/31/012533gtwqzttrr2wfnqqj.jpg" target=_blank><IMG src="http://www.oecr.com/data/attachment/portal/201007/31/012533gtwqzttrr2wfnqqj.jpg"></A></P> <P>美国加州大学计算机科学家打破了“太字节（Terabyte）障碍”，创造了在60秒内对超过太字节数据进行分类的世界纪录。在被誉为“数据分类的世界杯”的“分类基准”比赛中，他们还追平了最快数据分类率的世界纪录，172分钟内数据分类量达到1万亿字节，不过使用的计算机资源只有原纪录创造者计算机资源的1/4。<BR> <BR>寻求新趋势、高效率和其他竞争优势的公司致力于发展大数据量的分类途径，通常此项工作需要超强的数据中心。互联网的运行<a href="http://display.oecr.com" target="_blank" class="relatedlink">显示</a>了数据分类的重要性，社会网络的广告、亚马逊网站的推荐以及谷歌的搜索结果均源自对多达数拍字节（petabyte）数据组的分类。1拍字节等于1000太字节。<BR> <BR>研究项目负责人、加州大学圣地亚哥分校计算机科学教授阿敏·瓦达特表示，如果某家大公司需要查询所有相关的网页或<a href="http://b.oecr.com/sell" target="_blank" class="relatedlink">产品</a>销售，这需要对多达数拍字节的数据组进行分类，而数据组本身每天可呈千兆字节的速度增长。公司在不断地将其数据分类的数量和速度推向极限。瓦达特认为，实时的数据分析需要更好的分类技术。在数据中心，分类常常是许多更高级活动的“瓶颈”。<BR> <BR>计算机科学家面对的数据分类挑战不同于其他的利用现成数据库<a href="http://opticaldesign.oecr.com" target="_blank" class="relatedlink">软件</a>参加的比赛，它们之间最大的差异是在太字节和拍字节分类中，数据远远超过了计算机做分类所具有的内存容量。为了建立自己的大数据量分类系统，瓦达特他们专门设计了高速且平衡的计算机系统。所谓平衡系统是指系统内的技术资源如内存、存储和网络宽带等被全量使用，做到尽可能没有浪费。<BR> <BR>为打破“太字节障碍”，瓦达特他们建立的计算机系统拥有52个计算机节点，每个节点为1台装有两个4核处理器的服务器，其内存为24千兆字节，16块每块为500千兆字节的硬盘组成了存储空间。作为合作者，美国思科公司为研究小组提供了Nexus 5020交换机。</P></td></tr></table> <!--[diy=diycontentbottom]--><div id="diycontentbottom" class="area"></div><!--[/diy]--> <script src="data/cache/home.js?eOg" type="text/javascript"></script> <div id="click_div"><table cellpadding="0" cellspacing="0" class="atd"> <tr><td> <a href="http://club.oecr.com/home.php?mod=spacecp&ac=click&op=add&clickid=1&idtype=aid&id=1005&hash=ebd6988b1243e5d7902294abc93a8d73&handlekey=clickhandle" id="click_aid_1005_1" onclick="showWindow(this.id, 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