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<title>NVIDIA CUDA Library: cuProfilerStart</title>
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<div class="navpath"><a class="el" href="group__CUDA__PROFILER.html">Profiler Control</a>
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<tr><td class="navtab"><a class="qindex" href="group__CUDA__PROFILER_gd5d346ef62db53032948f387650d1a18.html#gd5d346ef62db53032948f387650d1a18">cuProfilerInitialize</a></td></tr>
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<a class="anchor" name="g8a5314de2292c2efac83ac7fcfa9190e"></a><!-- doxytag: member="cudaProfiler.h::cuProfilerStart" ref="g8a5314de2292c2efac83ac7fcfa9190e" args="(void)" -->
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<td class="memname"><a class="el" href="group__CUDA__TYPES_g09da14df1a751dcbfeccb9cf0073d64c.html#g09da14df1a751dcbfeccb9cf0073d64c">CUresult</a> cuProfilerStart </td>
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<td class="paramtype">void </td>
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This API starts the profiling for a context if it is not started already. Profiling must be initalized using <a class="el" href="group__CUDA__PROFILER_gd5d346ef62db53032948f387650d1a18.html#gd5d346ef62db53032948f387650d1a18" title="Initialize the profiling.">cuProfilerInitialize()</a> before calling this API.<p>
cuProfilerStart and cuProfilerStop APIs are used to programmatically control the profiling granularity by allowing profiling to be done only on selective pieces of code.<p>
<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#gg0cdead942fd5028d157641eef6bdeeaaa484e9af32c1e9893ff21f0e0191a12d">CUDA_ERROR_INVALID_CONTEXT</a>, <a class="el" href="group__CUDA__TYPES_g0cdead942fd5028d157641eef6bdeeaa.html#gg0cdead942fd5028d157641eef6bdeeaa624eb27178556d6a93433a610b36c0f9">CUDA_ERROR_PROFILER_DISABLED</a>, <a class="el" href="group__CUDA__TYPES_g0cdead942fd5028d157641eef6bdeeaa.html#gg0cdead942fd5028d157641eef6bdeeaab39b7696161bed9e1bc447ba699bf799">CUDA_ERROR_PROFILER_ALREADY_STARTED</a>, <a class="el" href="group__CUDA__TYPES_g0cdead942fd5028d157641eef6bdeeaa.html#gg0cdead942fd5028d157641eef6bdeeaab29d2209136a0e8b27c4d14aada28b97">CUDA_ERROR_PROFILER_NOT_INITIALIZED</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__PROFILER_gd5d346ef62db53032948f387650d1a18.html#gd5d346ef62db53032948f387650d1a18" title="Initialize the profiling.">cuProfilerInitialize</a>, <a class="el" href="group__CUDA__PROFILER_g4d8edef6174fd90165e6ac838f320a5f.html#g4d8edef6174fd90165e6ac838f320a5f" title="Stop the profiling.">cuProfilerStop</a> </dd></dl>
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