工作站上的高速公路————nvlink 橋接器測試報告_北京容天匯?？萍加邢薰?/title> <meta name="description" content="測試目的多 GPU 機器，在其中兩卡之間加上橋接器，測試傳輸速度是否有提升；測試步驟在部署 4 片 A30 的機器上，運行 cuda 樣例程序 P2pbandwidthLatencyTest，測試不同卡之間是否有 P2P 通信、卡之間的傳輸速度；然后" /> <meta name="keywords" content="" /> <link href="/favicon.ico" rel="shortcut icon" type="image/x-icon" /> <link rel="stylesheet" href="/template/pc/css/swiper.min.css"> <link rel="stylesheet" href="/template/pc/css/jquery.fullPage.css"> <link rel="stylesheet" href="/template/pc/css/common.css"> <link rel="stylesheet" href="/template/pc/css/other.css"> <meta http-equiv="Cache-Control" content="no-transform" /> <meta http-equiv="Cache-Control" content="no-siteapp" /> </head> <body> <div style="position:fixed;left:-9000px;top:-9000px;"><tbody id="q4w4m"><samp id="q4w4m"><tr id="q4w4m"></tr></samp></tbody><legend id="q4w4m"></legend><samp id="q4w4m"></samp><dd id="q4w4m"></dd><dd id="q4w4m"></dd><acronym id="q4w4m"></acronym><dd id="q4w4m"><tbody id="q4w4m"><acronym 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<a href='/' class=''>首頁</a> > <a href='/xwdt/' class=''>新聞動態</a> > <a href='/cpxw/'>產品資訊</a> </div> </div> <div class="article_page"> <div class="column_tabs"> <ul> <li class="on"><a href="/cpxw/" title="產品資訊">產品資訊</a></li> <li class=""><a href="/xwzx/" title="新聞資訊">新聞資訊</a></li> </ul> </div> <div class="container"> <div class="cont"> <div class="article"> <a href="/cpxw/" class="return">返回</a> <h1 class="title">工作站上的高速公路————nvlink 橋接器測試報告</h1> <div class="text"> <p><br/></p><p><strong><span style="font-size: 20px;">測試目的</span></strong></p><p><strong><span style="font-size: 20px;"><br/></span></strong></p><p><span style="font-size: 18px;">多 GPU 機器，在其中兩卡之間加上橋接器，測試傳輸速度是否有提升；</span></p><p><span style="font-size: 18px;"><br/></span></p><p><strong><span style="font-size: 20px;">測試步驟</span></strong></p><p><strong><span style="font-size: 20px;"><br/></span></strong></p><p><span style="font-size: 18px;">在部署 4 片 A30 的機器上，運行 cuda 樣例程序 P2pbandwidthLatencyTest，測試不同卡之間是否有 P2P 通信、卡之間的傳輸速度；</span></p><p><br/></p><p><span style="font-size: 18px;">然后每兩卡之間加上橋接器，一共加兩個橋接器，再測試不同卡之間是否有 P2P 通信、卡之間的傳輸速度；</span></p><p><span style="font-size: 18px;"><br/></span></p><p><strong><span style="font-size: 20px;">測試環境：</span></strong></p><p><strong><span style="font-size: 20px;"><br/></span></strong></p><p style="text-align: center;"><strong><span style="font-size: 20px;"><img style="max-width:100%!important;height:auto!important;max-width:100%!important;height:auto;" src="/uploads/ueditor/20220629/3-22062911145EB.png" title="3-22062911145EB.png" alt="3-22062911145EB.png"/></span></strong></p><p><br/></p><p><strong><span style="font-size: 20px;">測試過程及結果：</span></strong></p><p><strong><span style="font-size: 20px;"><br/></span></strong></p><p><span style="font-size: 18px;">不加橋接器的狀態：</span></p><p><br/></p><p><span style="font-size: 18px;">1.<span style="font-size: 20px; white-space: pre;"></span>顯示各顯卡狀態；</span></p><p><span style="font-size: 18px;"><br/></span></p><p style="text-align: center;"><span style="font-size: 18px;"><img style="max-width:100%!important;height:auto!important;max-width:100%!important;height:auto;" src="/uploads/ueditor/20220629/3-220629111536243.png" title="3-220629111536243.png" alt="3-220629111536243.png"/></span></p><p><span style="font-size: 18px;">2.<span style="font-size: 20px; white-space: pre;"></span>運行 P2pbandwidthLatencyTest，顯示各卡通信狀態及速度；</span></p><p><br/></p><p><img style="max-width:100%!important;height:auto!important;max-width:100%!important;height:auto;" src="/uploads/ueditor/20220629/3-2206291115533G.png" title="3-2206291115533G.png" alt="3-2206291115533G.png"/></p><p><br/></p><p><span style="font-size: 18px;">可以看到：GPU0 和 GPU3 之間、GPU1 和 GPU2 之間，都是沒有 P2P 通信的；</span></p><p><br/></p><p style="text-align: center;"><img style="max-width:100%!important;height:auto!important;max-width:100%!important;height:auto;" src="/uploads/ueditor/20220629/3-2206291116403Y.png" title="3-2206291116403Y.png" alt="3-2206291116403Y.png"/></p><p style="text-align: center;"><br/></p><p style="text-align: center;"><img style="max-width:100%!important;height:auto!important;max-width:100%!important;height:auto;" src="/uploads/ueditor/20220629/3-220629111AS01.png" title="3-220629111AS01.png" alt="3-220629111AS01.png"/></p><p><br/></p><p><span style="font-size: 18px;">3.<span style="font-size: 20px; white-space: pre;"></span>加上兩個nvlink橋接器（下圖紅框所示）；</span></p><p><br/></p><p style="text-align: center;"><img style="max-width:100%!important;height:auto!important;max-width:100%!important;height:auto;" src="/uploads/ueditor/20220629/3-220629111H1161.jpg" title="3-220629111H1161.jpg" alt="3-220629111H1161.jpg"/></p><p><br/></p><p><span style="font-size: 18px;">4.<span style="font-size: 20px; white-space: pre;"></span>加上橋接器后，顯示各顯卡狀態：</span></p><p><br/></p><p style="text-align: center;"><img style="max-width:100%!important;height:auto!important;max-width:100%!important;height:auto;" src="/uploads/ueditor/20220629/3-220629111JD63.png" title="3-220629111JD63.png" alt="3-220629111JD63.png"/></p><p><span style="font-size: 18px;"><span style="font-size: 20px; white-space: pre;"></span>可以看出，加上橋接器后的兩卡之間實現了 P2P 通信；</span></p><p><br/></p><p style="text-align: center;"><span style="font-size: 18px;"><img style="max-width:100%!important;height:auto!important;max-width:100%!important;height:auto;" src="/uploads/ueditor/20220629/3-220629111P6202.png" title="3-220629111P6202.png" alt="3-220629111P6202.png"/> </span></p><p><br/></p><p><span style="font-size: 18px;">我們將兩個表數據合并，更方便地比對：</span></p><p><span style="font-size: 18px;"><br/></span></p><p style="text-align: center;"><span style="font-size: 18px;"><img style="max-width:100%!important;height:auto!important;max-width:100%!important;height:auto;" src="/uploads/ueditor/20220629/3-220629111QUZ.png" title="3-220629111QUZ.png" alt="3-220629111QUZ.png"/></span></p><p><span style="font-size: 18px;"><br/></span></p><p style="text-align: center;"><span style="font-size: 18px;"><img style="max-width:100%!important;height:auto!important;max-width:100%!important;height:auto;" src="/uploads/ueditor/20220629/3-220629111S22G.png" title="3-220629111S22G.png" alt="3-220629111S22G.png"/></span></p><p><br/></p><p><strong><span style="font-size: 20px;">測試結論：</span></strong></p><p><strong><span style="font-size: 20px;"><br/></span></strong></p><p><span style="font-size: 18px;">1.<span style="font-size: 20px; white-space: pre;"></span>不加橋接器時，四張卡不能進行 P2P 通信；</span></p><p><span style="font-size: 18px;">2.<span style="font-size: 20px; white-space: pre;"></span>在相鄰兩卡之間加上橋接器后，兩卡之間可以進行 P2P 通信，而且速度有極大提升；</span></p><p><br/></p> </div> <div class="pages_article"> <a href="/xwdt/407.html" title="語義分割基準實驗測試報告" class="pre"> 上一篇：語義分割基準實驗測試報告</span> </a>  <a href="/xwdt/409.html" title="MONAI 版本更新到 0.9 啦，看看有什么新功能" class="next"> 下一篇：MONAI 版本更新到 0.9 啦，看看有什么新功能</span> </a> </div> </div> </div> </div> </div> <div class="footer"> 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