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<div class="navpath"><a class="el" href="group__CUDART__THREAD__DEPRECATED.html">Thread Management [DEPRECATED]</a>
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<a class="anchor" name="g27d0f538b3018142bf04deae7f02c49e"></a><!-- doxytag: member="cuda_runtime_api.h::cudaThreadSetCacheConfig" ref="g27d0f538b3018142bf04deae7f02c49e" args="(enum cudaFuncCache cacheConfig)" -->
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<td class="memname"><a class="el" href="group__CUDART__TYPES_gf599e5b8b829ce7db0f5216928f6ecb6.html#gf599e5b8b829ce7db0f5216928f6ecb6">cudaError_t</a> cudaThreadSetCacheConfig </td>
<td>(</td>
<td class="paramtype">enum <a class="el" href="group__CUDART__TYPES_gb980f35ed69ee7991704de29a13de49b.html#gb980f35ed69ee7991704de29a13de49b">cudaFuncCache</a> </td>
<td class="paramname"> <em>cacheConfig</em> </td>
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<dl compact><dt><b><a class="el" href="deprecated.html#_deprecated000006">Deprecated:</a></b></dt><dd></dd></dl>
Note that this function is deprecated because its name does not reflect its behavior. Its functionality is identical to the non-deprecated function <a class="el" href="group__CUDART__DEVICE_gac27b566beee1aa9175373bb9e29b8d1.html#gac27b566beee1aa9175373bb9e29b8d1" title="Sets the preferred cache configuration for the current device.">cudaDeviceSetCacheConfig()</a>, which should be used instead.<p>
On devices where the L1 cache and shared memory use the same hardware resources, this sets through <code>cacheConfig</code> the preferred cache configuration for the current device. This is only a preference. The runtime will use the requested configuration if possible, but it is free to choose a different configuration if required to execute the function. Any function preference set via <a class="el" href="group__CUDART__EXECUTION_g400ecf473d4fa8ac6738fbc753d5c288.html#g400ecf473d4fa8ac6738fbc753d5c288">cudaFuncSetCacheConfig (C API)</a> or <a class="el" href="group__CUDART__HIGHLEVEL_ge0969184de8a5c2d809aa8d7d2425484.html#ge0969184de8a5c2d809aa8d7d2425484">cudaFuncSetCacheConfig (C++ API)</a> will be preferred over this device-wide setting. Setting the device-wide cache configuration to <a class="el" href="group__CUDART__TYPES_gb980f35ed69ee7991704de29a13de49b.html#ggb980f35ed69ee7991704de29a13de49b3b4b8c65376ce1ca107be413e15981bc">cudaFuncCachePreferNone</a> will cause subsequent kernel launches to prefer to not change the cache configuration unless required to launch the kernel.<p>
This setting does nothing on devices where the size of the L1 cache and shared memory are fixed.<p>
Launching a kernel with a different preference than the most recent preference setting may insert a device-side synchronization point.<p>
The supported cache configurations are:<ul>
<li><a class="el" href="group__CUDART__TYPES_gb980f35ed69ee7991704de29a13de49b.html#ggb980f35ed69ee7991704de29a13de49b3b4b8c65376ce1ca107be413e15981bc">cudaFuncCachePreferNone</a>: no preference for shared memory or L1 (default)</li><li><a class="el" href="group__CUDART__TYPES_gb980f35ed69ee7991704de29a13de49b.html#ggb980f35ed69ee7991704de29a13de49b84725d25c531f9bafc61ae329afe5b2b">cudaFuncCachePreferShared</a>: prefer larger shared memory and smaller L1 cache</li><li><a class="el" href="group__CUDART__TYPES_gb980f35ed69ee7991704de29a13de49b.html#ggb980f35ed69ee7991704de29a13de49b8ecb48ccbc2230c81528a2c7c695100e">cudaFuncCachePreferL1</a>: prefer larger L1 cache and smaller shared memory</li></ul>
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<dl compact><dt><b>Parameters:</b></dt><dd>
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<tr><td valign="top"></td><td valign="top"><em>cacheConfig</em> </td><td>- Requested cache configuration</td></tr>
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<dl class="return" compact><dt><b>Returns:</b></dt><dd><a class="el" href="group__CUDART__TYPES_g3f51e3575c2178246db0a94a430e0038.html#gg3f51e3575c2178246db0a94a430e0038e355f04607d824883b4a50662830d591">cudaSuccess</a>, <a class="el" href="group__CUDART__TYPES_g3f51e3575c2178246db0a94a430e0038.html#gg3f51e3575c2178246db0a94a430e0038ce7993a88ecf2c57b8102d55d997a18c">cudaErrorInitializationError</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__CUDART__DEVICE_gac27b566beee1aa9175373bb9e29b8d1.html#gac27b566beee1aa9175373bb9e29b8d1" title="Sets the preferred cache configuration for the current device.">cudaDeviceSetCacheConfig</a> </dd></dl>
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