<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8"> <title>NVIDIA CUDA Library: cuEventSynchronize</title> <link href="customdoxygen.css" rel="stylesheet" type="text/css"> <link href="tabs.css" rel="stylesheet" type="text/css"> </head><body> <!-- Generated by Doxygen 1.5.8 --> <div class="navigation" id="top"> <div class="tabs"> <ul> <li><a href="index.html"><span>Main Page</span></a></li> <li><a href="modules.html"><span>Modules</span></a></li> <li><a href="annotated.html"><span>Data Structures</span></a></li> <li><a href="pages.html"><span>Related Pages</span></a></li> </ul> </div> </div> <div class="contents"> <div class="navpath"><a class="el" href="group__CUDA__EVENT.html">Event Management</a> </div> <table cellspacing="0" cellpadding="0" border="0"> <tr> <td valign="top"> <div class="navtab"> <table> <tr><td class="navtab"><a class="qindex" href="group__CUDA__EVENT_g450687e75f3ff992fe01662a43d9d3db.html#g450687e75f3ff992fe01662a43d9d3db">cuEventCreate</a></td></tr> <tr><td class="navtab"><a class="qindex" href="group__CUDA__EVENT_g593ec73a8ec5a5fc031311d3e4dca1ef.html#g593ec73a8ec5a5fc031311d3e4dca1ef">cuEventDestroy</a></td></tr> <tr><td class="navtab"><a class="qindex" href="group__CUDA__EVENT_gdfb1178807353bbcaa9e245da497cf97.html#gdfb1178807353bbcaa9e245da497cf97">cuEventElapsedTime</a></td></tr> <tr><td class="navtab"><a class="qindex" href="group__CUDA__EVENT_g6f0704d755066b0ee705749ae911deef.html#g6f0704d755066b0ee705749ae911deef">cuEventQuery</a></td></tr> <tr><td class="navtab"><a class="qindex" href="group__CUDA__EVENT_g95424d3be52c4eb95d83861b70fb89d1.html#g95424d3be52c4eb95d83861b70fb89d1">cuEventRecord</a></td></tr> <tr><td class="navtab"><a class="qindexHL" href="group__CUDA__EVENT_g9e520d34e51af7f5375610bca4add99c.html#g9e520d34e51af7f5375610bca4add99c">cuEventSynchronize</a></td></tr> </table> </div> </td> <td valign="top"> <a class="anchor" name="g9e520d34e51af7f5375610bca4add99c"></a><!-- doxytag: member="cuda.h::cuEventSynchronize" ref="g9e520d34e51af7f5375610bca4add99c" args="(CUevent hEvent)" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="group__CUDA__TYPES_g09da14df1a751dcbfeccb9cf0073d64c.html#g09da14df1a751dcbfeccb9cf0073d64c">CUresult</a> cuEventSynchronize </td> <td>(</td> <td class="paramtype"><a class="el" href="group__CUDA__TYPES_g6d740185cf0953636d4ae37f68d7559b.html#g6d740185cf0953636d4ae37f68d7559b">CUevent</a> </td> <td class="paramname"> <em>hEvent</em> </td> <td> ) </td> <td></td> </tr> </table> </div> <div class="memdoc"> <p> Wait until the completion of all device work preceding the most recent call to <a class="el" href="group__CUDA__EVENT_g95424d3be52c4eb95d83861b70fb89d1.html#g95424d3be52c4eb95d83861b70fb89d1" title="Records an event.">cuEventRecord()</a> (in the appropriate compute streams, as specified by the arguments to <a class="el" href="group__CUDA__EVENT_g95424d3be52c4eb95d83861b70fb89d1.html#g95424d3be52c4eb95d83861b70fb89d1" title="Records an event.">cuEventRecord()</a>).<p> If <a class="el" href="group__CUDA__EVENT_g95424d3be52c4eb95d83861b70fb89d1.html#g95424d3be52c4eb95d83861b70fb89d1" title="Records an event.">cuEventRecord()</a> has not been called on <code>hEvent</code>, <a class="el" href="group__CUDA__TYPES_g0cdead942fd5028d157641eef6bdeeaa.html#gg0cdead942fd5028d157641eef6bdeeaaa0eed720f8a87cd1c5fd1c453bc7a03d">CUDA_SUCCESS</a> is returned immediately.<p> Waiting for an event that was created with the <a class="el" href="group__CUDA__TYPES_g58fed1f4772abb4551d21d44dfcb892c.html#gg58fed1f4772abb4551d21d44dfcb892c6813b3b31fdb737133124f3c35044362">CU_EVENT_BLOCKING_SYNC</a> flag will cause the calling CPU thread to block until the event has been completed by the device. If the <a class="el" href="group__CUDA__TYPES_g58fed1f4772abb4551d21d44dfcb892c.html#gg58fed1f4772abb4551d21d44dfcb892c6813b3b31fdb737133124f3c35044362">CU_EVENT_BLOCKING_SYNC</a> flag has not been set, then the CPU thread will busy-wait until the event has been completed by the device.<p> <dl compact><dt><b>Parameters:</b></dt><dd> <table border="0" cellspacing="2" cellpadding="0"> <tr><td valign="top"></td><td valign="top"><em>hEvent</em> </td><td>- Event to wait for</td></tr> </table> </dl> <dl class="return" compact><dt><b>Returns:</b></dt><dd><a class="el" href="group__CUDA__TYPES_g0cdead942fd5028d157641eef6bdeeaa.html#gg0cdead942fd5028d157641eef6bdeeaaa0eed720f8a87cd1c5fd1c453bc7a03d">CUDA_SUCCESS</a>, <a class="el" href="group__CUDA__TYPES_g0cdead942fd5028d157641eef6bdeeaa.html#gg0cdead942fd5028d157641eef6bdeeaaacf52f132faf29b473cdda6061f0f44a">CUDA_ERROR_DEINITIALIZED</a>, <a class="el" href="group__CUDA__TYPES_g0cdead942fd5028d157641eef6bdeeaa.html#gg0cdead942fd5028d157641eef6bdeeaa8feb999f0af99b4a25ab26b3866f4df8">CUDA_ERROR_NOT_INITIALIZED</a>, <a class="el" href="group__CUDA__TYPES_g0cdead942fd5028d157641eef6bdeeaa.html#gg0cdead942fd5028d157641eef6bdeeaaa484e9af32c1e9893ff21f0e0191a12d">CUDA_ERROR_INVALID_CONTEXT</a>, <a class="el" href="group__CUDA__TYPES_g0cdead942fd5028d157641eef6bdeeaa.html#gg0cdead942fd5028d157641eef6bdeeaa0fd2e63260c6317ba943af0f7e4b8d21">CUDA_ERROR_INVALID_HANDLE</a> </dd></dl> <dl class="note" compact><dt><b>Note:</b></dt><dd>Note that this function may also return error codes from previous, asynchronous launches.</dd></dl> <dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="group__CUDA__EVENT_g450687e75f3ff992fe01662a43d9d3db.html#g450687e75f3ff992fe01662a43d9d3db" title="Creates an event.">cuEventCreate</a>, <a class="el" href="group__CUDA__EVENT_g95424d3be52c4eb95d83861b70fb89d1.html#g95424d3be52c4eb95d83861b70fb89d1" title="Records an event.">cuEventRecord</a>, <a class="el" href="group__CUDA__EVENT_g6f0704d755066b0ee705749ae911deef.html#g6f0704d755066b0ee705749ae911deef" title="Queries an event's status.">cuEventQuery</a>, <a class="el" href="group__CUDA__EVENT_g593ec73a8ec5a5fc031311d3e4dca1ef.html#g593ec73a8ec5a5fc031311d3e4dca1ef" title="Destroys an event.">cuEventDestroy</a>, <a class="el" href="group__CUDA__EVENT_gdfb1178807353bbcaa9e245da497cf97.html#gdfb1178807353bbcaa9e245da497cf97" title="Computes the elapsed time between two events.">cuEventElapsedTime</a> </dd></dl> </div> </div><p> </td> </tr> </table> </div> <hr size="1"><address style="text-align: right;"><small> Generated by Doxygen for NVIDIA CUDA Library <a href="http://www.nvidia.com/cuda"><img src="nvidia_logo.jpg" alt="NVIDIA" align="middle" border="0" height="80"></a></small></address> </body> </html>