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<div id="projectname">Hardware Locality (hwloc)
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<div class="title">Interoperability with the CUDA Runtime API</div> </div>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:gad8b701d9a34923e34bd58defd4c1e704"><td class="memItemLeft" align="right" valign="top">static int </td><td class="memItemRight" valign="bottom"><a class="el" href="a00097.html#gad8b701d9a34923e34bd58defd4c1e704">hwloc_cudart_get_device_pci_ids</a> (<a class="el" href="a00064.html#ga9d1e76ee15a7dee158b786c30b6a6e38">hwloc_topology_t</a> topology, int idx, int *domain, int *bus, int *dev)</td></tr>
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<tr class="memitem:ga187ca00c6e12800a25151ce331620980"><td class="memItemLeft" align="right" valign="top">static int </td><td class="memItemRight" valign="bottom"><a class="el" href="a00097.html#ga187ca00c6e12800a25151ce331620980">hwloc_cudart_get_device_cpuset</a> (<a class="el" href="a00064.html#ga9d1e76ee15a7dee158b786c30b6a6e38">hwloc_topology_t</a> topology, int idx, <a class="el" href="a00061.html#ga4bbf39b68b6f568fb92739e7c0ea7801">hwloc_cpuset_t</a> set)</td></tr>
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<tr class="memitem:gaeda4e6efbb36b518b2c286434ad23bb2"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="a00063.html#ga79b8ab56877ef99ac59b833203391c7d">hwloc_obj_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="a00097.html#gaeda4e6efbb36b518b2c286434ad23bb2">hwloc_cudart_get_device_pcidev</a> (<a class="el" href="a00064.html#ga9d1e76ee15a7dee158b786c30b6a6e38">hwloc_topology_t</a> topology, int idx)</td></tr>
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<tr class="memitem:gac0f3eeaf7712919f298097b1a21307b0"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="a00063.html#ga79b8ab56877ef99ac59b833203391c7d">hwloc_obj_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="a00097.html#gac0f3eeaf7712919f298097b1a21307b0">hwloc_cudart_get_device_osdev_by_index</a> (<a class="el" href="a00064.html#ga9d1e76ee15a7dee158b786c30b6a6e38">hwloc_topology_t</a> topology, unsigned idx)</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<p>This interface offers ways to retrieve topology information about CUDA devices when using the CUDA Runtime API. </p>
<h2 class="groupheader">Function Documentation</h2>
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<td class="memname">static int hwloc_cudart_get_device_cpuset </td>
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<p>Get the CPU set of logical processors that are physically close to device <code>idx</code>. </p>
<p>Return the CPU set describing the locality of the CUDA device whose index is <code>idx</code>.</p>
<p>Topology <code>topology</code> and device <code>idx</code> must match the local machine. I/O devices detection and the CUDA component are not needed in the topology.</p>
<p>The function only returns the locality of the device. If more information about the device is needed, OS objects should be used instead, see <a class="el" href="a00097.html#gac0f3eeaf7712919f298097b1a21307b0" title="Get the hwloc OS device object corresponding to the CUDA device whose index is idx. ">hwloc_cudart_get_device_osdev_by_index()</a>.</p>
<p>This function is currently only implemented in a meaningful way for Linux; other systems will simply get a full cpuset. </p>
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<td class="memname">static <a class="el" href="a00063.html#ga79b8ab56877ef99ac59b833203391c7d">hwloc_obj_t</a> hwloc_cudart_get_device_osdev_by_index </td>
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<p>Get the hwloc OS device object corresponding to the CUDA device whose index is <code>idx</code>. </p>
<p>Return the OS device object describing the CUDA device whose index is <code>idx</code>. Return NULL if there is none.</p>
<p>The topology <code>topology</code> does not necessarily have to match the current machine. For instance the topology may be an XML import of a remote host. I/O devices detection and the CUDA component must be enabled in the topology. If not, the locality of the object may still be found using <a class="el" href="a00097.html#ga187ca00c6e12800a25151ce331620980" title="Get the CPU set of logical processors that are physically close to device idx. ">hwloc_cudart_get_device_cpuset()</a>.</p>
<dl class="section note"><dt>Note</dt><dd>The corresponding PCI device object can be obtained by looking at the OS device parent object.</dd>
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This function is identical to <a class="el" href="a00096.html#ga12ee892994ed037e8f64bbffda02cf2e" title="Get the hwloc OS device object corresponding to the CUDA device whose index is idx. ">hwloc_cuda_get_device_osdev_by_index()</a>. </dd></dl>
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<td class="memname">static int hwloc_cudart_get_device_pci_ids </td>
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<p>Return the domain, bus and device IDs of the CUDA device whose index is <code>idx</code>. </p>
<p>Device index <code>idx</code> must match the local machine. </p>
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<td class="memname">static <a class="el" href="a00063.html#ga79b8ab56877ef99ac59b833203391c7d">hwloc_obj_t</a> hwloc_cudart_get_device_pcidev </td>
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<p>Get the hwloc PCI device object corresponding to the CUDA device whose index is <code>idx</code>. </p>
<p>Return the PCI device object describing the CUDA device whose index is <code>idx</code>. Return NULL if there is none.</p>
<p>Topology <code>topology</code> and device <code>idx</code> must match the local machine. I/O devices detection must be enabled in topology <code>topology</code>. The CUDA component is not needed in the topology. </p>
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