nvcc fatal : Unsupported gpu architecture 'compute_75'

[TerminatorSd]

I have encountered the following problem when i tried to execute luarocks install cudnn

CMake Error at /usr/local/Cellar/cmake/3.13.2/share/cmake/Modules/FindCUDA.cmake:696 (message):
Specify CUDA_TOOLKIT_ROOT_DIR
Call Stack (most recent call first):
CMakeLists.txt:7 (FIND_PACKAGE)

The problem was solved by installing cuda from https://developer.nvidia.com
But when i run this command for second time, a new problem has arisen.

nvcc fatal : Unsupported gpu architecture 'compute_75'
nvcc fatal : Unsupported gpu architecture 'compute_75'
CMake Error at THC_generated_THCReduceApplyUtils.cu.o.Release.cmake:219 (message):
Error generating
/tmp/luarocks_cutorch-scm-1-2575/cutorch/build/lib/THC/CMakeFiles/THC.dir//./THC_generated_THCReduceApplyUtils.cu.o

CMake Error at THC_generated_THCBlas.cu.o.Release.cmake:219 (message):
Error generating
/tmp/luarocks_cutorch-scm-1-2575/cutorch/build/lib/THC/CMakeFiles/THC.dir//./THC_generated_THCBlas.cu.o

nvcc fatal : Unsupported gpu architecture 'compute_75'
CMake Error at THC_generated_THCSleep.cu.o.Release.cmake:219 (message):
Error generating
/tmp/luarocks_cutorch-scm-1-2575/cutorch/build/lib/THC/CMakeFiles/THC.dir//./THC_generated_THCSleep.cu.o

make[2]: *** [lib/THC/CMakeFiles/THC.dir/THC_generated_THCReduceApplyUtils.cu.o] Error 1
make[2]: *** Waiting for unfinished jobs....
nvcc fatal : Unsupported gpu architecture 'compute_75'
make[2]: *** [lib/THC/CMakeFiles/THC.dir/THC_generated_THCBlas.cu.o] Error 1
CMake Error at THC_generated_THCTensorCopy.cu.o.Release.cmake:219 (message):
Error generating
/tmp/luarocks_cutorch-scm-1-2575/cutorch/build/lib/THC/CMakeFiles/THC.dir//./THC_generated_THCTensorCopy.cu.o

make[2]: *** [lib/THC/CMakeFiles/THC.dir/THC_generated_THCSleep.cu.o] Error 1
nvcc fatal : Unsupported gpu architecture 'compute_75'
CMake Error at THC_generated_THCStorageCopy.cu.o.Release.cmake:219 (message):
Error generating
/tmp/luarocks_cutorch-scm-1-2575/cutorch/build/lib/THC/CMakeFiles/THC.dir//./THC_generated_THCStorageCopy.cu.o

make[2]: *** [lib/THC/CMakeFiles/THC.dir/THC_generated_THCTensorCopy.cu.o] Error 1
nvcc fatal : Unsupported gpu architecture 'compute_75'
nvcc fatal : Unsupported gpu architecture 'compute_75'
make[2]: *** [lib/THC/CMakeFiles/THC.dir/THC_generated_THCStorageCopy.cu.o] Error 1
CMake Error at THC_generated_THCStorage.cu.o.Release.cmake:219 (message):
Error generating
/tmp/luarocks_cutorch-scm-1-2575/cutorch/build/lib/THC/CMakeFiles/THC.dir//./THC_generated_THCStorage.cu.o

CMake Error at THC_generated_THCHalf.cu.o.Release.cmake:219 (message):
Error generating
/tmp/luarocks_cutorch-scm-1-2575/cutorch/build/lib/THC/CMakeFiles/THC.dir//./THC_generated_THCHalf.cu.o

nvcc fatal : Unsupported gpu architecture 'compute_75'
CMake Error at THC_generated_THCTensor.cu.o.Release.cmake:219 (message):
Error generating
/tmp/luarocks_cutorch-scm-1-2575/cutorch/build/lib/THC/CMakeFiles/THC.dir//./THC_generated_THCTensor.cu.o

make[2]: *** [lib/THC/CMakeFiles/THC.dir/THC_generated_THCHalf.cu.o] Error 1
make[2]: *** [lib/THC/CMakeFiles/THC.dir/THC_generated_THCStorage.cu.o] Error 1
make[2]: *** [lib/THC/CMakeFiles/THC.dir/THC_generated_THCTensor.cu.o] Error 1
make[1]: *** [lib/THC/CMakeFiles/THC.dir/all] Error 2
make: *** [all] Error 2

Error: Failed installing dependency: https://raw.githubusercontent.com/torch/rocks/master/cutorch-scm-1.rockspec - Build error: Failed building.

How can i solve this problem?

[Kaushik-Raghavan]

I followed this solution and solved the issue by setting the following environment variable export TORCH_CUDA_ARCH_LIST="6.1" before installing cudnn