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If you are only ever going to run your CUDA code on your RTX 2080 Ti then you can add the following to your CMake

-DCUDA_ARCH_BIN=7.5

otherwise I would suggest adding the following

-DCUDA_ARCH_BIN=6.0,6.1,7.0,7.5 -DCUDA_ARCH_PTX=3.5,5.0,5.2,5.3,7.5

for maximum backward and forward compatibility and performance.

If you are only ever going to run your CUDA code on your RTX 2080 Ti then you can add the following to your CMake

-DCUDA_ARCH_BIN=7.5

otherwise I would suggest adding the following

-DCUDA_ARCH_BIN=6.0,6.1,7.0,7.5 -DCUDA_ARCH_PTX=3.5,5.0,5.2,5.3,7.5-DCUDA_ARCH_BIN=5.3,6.0,6.1,7.0,7.5 -DCUDA_ARCH_PTX=7.5

for maximum backward performance and forward compatibility and performance.compatibility.