Multi-GPU Peer to Peer access failing on Tesla K80 - #15 by Robert_Crovella - CUDA Programming and Performance

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Developer Forums </a> </header> <div id="main-outlet" class="wrap" role="main"> <div id="topic-title"> <h1> <a href="/t/multi-gpu-peer-to-peer-access-failing-on-tesla-k80/39748">Multi-GPU Peer to Peer access failing on Tesla K80 </a> </h1> <div class="topic-category" itemscope itemtype="http://schema.org/BreadcrumbList"> <span itemprop="itemListElement" itemscope itemtype="http://schema.org/ListItem"> <a href="/c/accelerated-computing/cuda/cuda-programming-and-performance/7" class="badge-wrapper bullet" itemprop="item"> <span class='badge-category-bg' style='background-color: #76B900'></span> <span class='badge-category clear-badge'> <span class='category-name' itemprop='name'>Accelerated Computing</span> </span> </a> <meta itemprop="position" content="1" /> </span> <span itemprop="itemListElement" itemscope itemtype="http://schema.org/ListItem"> <a href="/c/accelerated-computing/cuda/cuda-programming-and-performance/7" class="badge-wrapper bullet" itemprop="item"> <span class='badge-category-bg' style='background-color: #76B900'></span> <span class='badge-category clear-badge'> <span class='category-name' itemprop='name'>CUDA</span> </span> </a> <meta itemprop="position" content="2" /> </span> <span itemprop="itemListElement" itemscope itemtype="http://schema.org/ListItem"> <a href="/c/accelerated-computing/cuda/cuda-programming-and-performance/7" class="badge-wrapper bullet" itemprop="item"> <span class='badge-category-bg' style='background-color: #76B900'></span> <span class='badge-category clear-badge'> <span class='category-name' itemprop='name'>CUDA Programming and Performance</span> </span> </a> <meta itemprop="position" content="3" /> </span> </div> </div> <div itemscope itemtype='http://schema.org/DiscussionForumPosting'> <meta itemprop='headline' content='Multi-GPU Peer to Peer access failing on Tesla K80 '> <link itemprop='url' href='https://forums.developer.nvidia.com/t/multi-gpu-peer-to-peer-access-failing-on-tesla-k80/39748'> <meta itemprop='datePublished' content='2015-10-06T18:53:44Z'> <meta itemprop='articleSection' content='CUDA Programming and Performance'> <meta itemprop='keywords' content=''> <div itemprop='publisher' itemscope itemtype="http://schema.org/Organization"> <meta itemprop='name' content='NVIDIA'> <div itemprop='logo' itemscope itemtype="http://schema.org/ImageObject"> <meta itemprop='url' content='https://global.discourse-cdn.com/nvidia/original/3X/a/1/a1ef6e0c1fbd3fad5bf82538b78dfaa9c5fa1a61.png'> </div> </div> <span itemprop='author' itemscope itemtype="http://schema.org/Person"> <meta itemprop='name' content='donovanHill'> <link itemprop='url' href='https://forums.developer.nvidia.com/u/donovanHill'> </span> <meta itemprop='text' content='Hi- I am having trouble moving data directly from one GPU to another. Take the simpleP2P sample program that comes in NVIDIA toolkit under NVIDIA_CUDA-7.5_Samples/0_Simple/simpleP2P for example. It is failing with verif&hellip;'> <div id='post_15' itemprop='comment' itemscope itemtype='http://schema.org/Comment' class='topic-body crawler-post'> <div class='crawler-post-meta'> <span class="creator" itemprop="author" itemscope itemtype="http://schema.org/Person"> <a itemprop="url" href='https://forums.developer.nvidia.com/u/Robert_Crovella'><span itemprop='name'>Robert_Crovella</span></a> </span> <span class="crawler-post-infos"> <time itemprop='datePublished' datetime='2015-10-15T19:11:51Z' class='post-time'> October 15, 2015, 7:11pm </time> <meta itemprop='dateModified' content='2015-10-15T19:11:51Z'> <span itemprop='position'>15</span> </span> </div> <div class='post' itemprop='text'> <p>Please run the following commands as root, then post the results here:</p> <pre><code class="lang-auto">lspci -s 83:08.0 -vvvv | grep -i acs </code></pre> <p>and</p> <pre><code class="lang-auto">lspci -s 83:10.0 -vvvv | grep -i acs </code></pre> </div> <div itemprop="interactionStatistic" itemscope itemtype="http://schema.org/InteractionCounter"> <meta itemprop="interactionType" content="http://schema.org/LikeAction"/> <meta itemprop="userInteractionCount" content="0" /> <span class='post-likes'></span> </div> <div class='crawler-linkback-list' itemscope itemtype='http://schema.org/ItemList'> <div itemprop='itemListElement' itemscope itemtype='http://schema.org/ListItem'> <a itemprop='url' href="https://forums.developer.nvidia.com/t/cpu-amd-5975wx-4-4090-cuda-cuda12-pytoch-2-0/237825/4">我用的CPU是AMD 5975WX，显卡是4块4090。cuda版本为cuda12，pytoch版本为2.0</a> <meta itemprop='position' content='1'> </div> </div> </div> </div> <div role='navigation' itemscope itemtype='http://schema.org/SiteNavigationElement' class="topic-body crawler-post"> <span itemprop='name'> <a itemprop="url" href="/t/multi-gpu-peer-to-peer-access-failing-on-tesla-k80/39748#post_15">show post in topic</a> </span> </div> <div id="related-topics" class="more-topics__list " role="complementary" 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Multi-GPU Peer to Peer access failing on Tesla K80 - #15 by Robert_Crovella - CUDA Programming and Performance - NVIDIA Developer Forums