Some problems when I try to enable L1 Cache inside GPU [closed]

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I am a beginner in cuda, I already executed the command of enabling L1 Cache through command prompt in windows. nvcc locates in the path: C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v9.0\bin on my device.

I write the command as follows.

C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v9.0\bin>nvcc -Xptxas -dlcm = ca

The result on the screen is :

nvcc fatal: No input files specified: use option --help for more information.

Please, help me to solve the problem.

来源：https://stackoverflow.com/questions/59453866/some-problems-when-i-try-to-enable-l1-cache-inside-gpu