Ben Sander
250 строки
13 KiB
HTML
250 строки
13 KiB
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<div id="projectname">HIP: Heterogenous-computing Interface for Portability
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<a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(0)"><span class="SelectionMark"> </span>All</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(1)"><span class="SelectionMark"> </span>Classes</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(2)"><span class="SelectionMark"> </span>Files</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(3)"><span class="SelectionMark"> </span>Functions</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(4)"><span class="SelectionMark"> </span>Variables</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(5)"><span class="SelectionMark"> </span>Typedefs</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(6)"><span class="SelectionMark"> </span>Enumerations</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(7)"><span class="SelectionMark"> </span>Enumerator</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(8)"><span class="SelectionMark"> </span>Macros</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(9)"><span class="SelectionMark"> </span>Groups</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(10)"><span class="SelectionMark"> </span>Pages</a></div>
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<a href="#func-members">Functions</a> </div>
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<div class="title">Device Memory Access<div class="ingroups"><a class="el" href="group__API.html">HIP API</a></div></div> </div>
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<div class="contents">
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<table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
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Functions</h2></td></tr>
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<tr class="memitem:gab53a55dbc087ff659918fd04287de3d3"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__GlobalDefs.html#gadf5010f6e140a53ecbdf949e73e87594">hipError_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__PeerToPeer.html#gab53a55dbc087ff659918fd04287de3d3">hipDeviceCanAccessPeer</a> (int *canAccessPeer, int device, int peerDevice)</td></tr>
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<tr class="memdesc:gab53a55dbc087ff659918fd04287de3d3"><td class="mdescLeft"> </td><td class="mdescRight">Determine if a device can access a peer's memory. <a href="#gab53a55dbc087ff659918fd04287de3d3">More...</a><br/></td></tr>
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<tr class="separator:gab53a55dbc087ff659918fd04287de3d3"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga41e60c01f63597529da1cd77bdd55379"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__GlobalDefs.html#gadf5010f6e140a53ecbdf949e73e87594">hipError_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__PeerToPeer.html#ga41e60c01f63597529da1cd77bdd55379">hipDeviceDisablePeerAccess</a> (int peerDevice)</td></tr>
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<tr class="separator:ga41e60c01f63597529da1cd77bdd55379"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga098e0d626edbfb69b66d141a5a8b7dc6"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__GlobalDefs.html#gadf5010f6e140a53ecbdf949e73e87594">hipError_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__PeerToPeer.html#ga098e0d626edbfb69b66d141a5a8b7dc6">hipDeviceEnablePeerAccess</a> (int peerDevice, unsigned int flags)</td></tr>
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<tr class="separator:ga098e0d626edbfb69b66d141a5a8b7dc6"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga72ae9e7f498ab5684580892a5d7d8e2d"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ga72ae9e7f498ab5684580892a5d7d8e2d"></a>
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<a class="el" href="group__GlobalDefs.html#gadf5010f6e140a53ecbdf949e73e87594">hipError_t</a> </td><td class="memItemRight" valign="bottom"><b>hipMemcpyPeer</b> (void *dst, int dstDevice, const void *src, int srcDevice, size_t sizeBytes)</td></tr>
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<tr class="separator:ga72ae9e7f498ab5684580892a5d7d8e2d"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:gab6211c18ca1e23252ef080cd6be855ca"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__GlobalDefs.html#gadf5010f6e140a53ecbdf949e73e87594">hipError_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__PeerToPeer.html#gab6211c18ca1e23252ef080cd6be855ca">hipMemcpyPeerAsync</a> (void *dst, int dstDevice, const void *src, int srcDevice, size_t sizeBytes, <a class="el" href="structihipStream__t.html">hipStream_t</a> stream=0)</td></tr>
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</table>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
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<h2>----------------------------------------------------------------------------------------------— </h2>
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<h2 class="groupheader">Function Documentation</h2>
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<a class="anchor" id="gab53a55dbc087ff659918fd04287de3d3"></a>
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<td class="memname"><a class="el" href="group__GlobalDefs.html#gadf5010f6e140a53ecbdf949e73e87594">hipError_t</a> hipDeviceCanAccessPeer </td>
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<td>(</td>
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<td class="paramtype">int * </td>
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<td class="paramname"><em>canAccessPeer</em>, </td>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">int </td>
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<td class="paramname"><em>device</em>, </td>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">int </td>
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<td class="paramname"><em>peerDevice</em> </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</div><div class="memdoc">
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<p>Determine if a device can access a peer's memory. </p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramdir">[out]</td><td class="paramname">canAccessPeer</td><td>returns true if specified devices are peers. </td></tr>
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<tr><td class="paramdir">[in]</td><td class="paramname">device</td><td></td></tr>
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<tr><td class="paramdir">[in]</td><td class="paramname">peerDevice</td><td>Returns "1" in <code>canAccessPeer</code> if the specified <code>device</code> is capable of directly accessing memory phyically located on peerDevice , or "0" if not.</td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section warning"><dt>Warning</dt><dd>HCC returns 0 in *canAccessPeer ; Need to update this function when RT supports P2P </dd></dl>
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<td class="memname"><a class="el" href="group__GlobalDefs.html#gadf5010f6e140a53ecbdf949e73e87594">hipError_t</a> hipDeviceDisablePeerAccess </td>
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<td>(</td>
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<td class="paramtype">int </td>
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<td class="paramname"><em>peerDevice</em></td><td>)</td>
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<td></td>
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</table>
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</div><div class="memdoc">
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<dl class="section warning"><dt>Warning</dt><dd>Need to update this function when RT supports P2P </dd></dl>
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</div>
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<a class="anchor" id="ga098e0d626edbfb69b66d141a5a8b7dc6"></a>
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<div class="memitem">
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<tr>
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<td class="memname"><a class="el" href="group__GlobalDefs.html#gadf5010f6e140a53ecbdf949e73e87594">hipError_t</a> hipDeviceEnablePeerAccess </td>
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<td>(</td>
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<td class="paramtype">int </td>
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<td class="paramname"><em>peerDevice</em>, </td>
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</tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">unsigned int </td>
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<td class="paramname"><em>flags</em> </td>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<dl class="section warning"><dt>Warning</dt><dd>Need to update this function when RT supports P2P </dd></dl>
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</div>
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</div>
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<a class="anchor" id="gab6211c18ca1e23252ef080cd6be855ca"></a>
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<div class="memitem">
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<div class="memproto">
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<td class="memname"><a class="el" href="group__GlobalDefs.html#gadf5010f6e140a53ecbdf949e73e87594">hipError_t</a> hipMemcpyPeerAsync </td>
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<td>(</td>
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<td class="paramtype">void * </td>
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<td class="paramname"><em>dst</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">int </td>
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<td class="paramname"><em>dstDevice</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">const void * </td>
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<td class="paramname"><em>src</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">int </td>
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<td class="paramname"><em>srcDevice</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">size_t </td>
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<td class="paramname"><em>sizeBytes</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype"><a class="el" href="structihipStream__t.html">hipStream_t</a> </td>
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<td class="paramname"><em>stream</em> </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<dl class="bug"><dt><b><a class="el" href="bug.html#_bug000004">Bug:</a></b></dt><dd>This function uses a synchronous copy </dd></dl>
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