How can I set shared memory configuration for NVIDIA graphics card to increase L1 cache?

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Iskander 2016-2-18

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https://ww2.mathworks.cn/matlabcentral/answers/268716-how-can-i-set-shared-memory-configuration-for-nvidia-graphics-card-to-increase-l1-cache

编辑： Joss Knight 2016-2-26

I need to set the shared memory configuration for NVIDIA graphics card by running the following command in C:

cudaDeviceSetCacheConfig(cudaFuncCachePreferL1);

This will set L1 cache to 48KB instead of default 16KB (to benefit from higher L1 cache hit rate in my application).

How do I do this if I don't want to use mex file but run CUDA kernel on GPU using precompiled PTX code?

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Answer 1

Joss Knight 2016-2-26

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编辑：Joss Knight 2016-2-26

You can't, but you can write a mex function to do it, that will affect your next CUDAKernel call.

MEX functions do not initialise the GPU on every call so I don't quite understand what is preventing you from using mex functions in this case. The mechanism through which kernels are launched are different so I couldn't say definitively whether using CUDAKernel or launching a kernel yourself using a MEX function would be faster.