Same error here:
THCudaCheck FAIL file=/pytorch/aten/src/THC/THCGeneral.cpp line=47 error=804
CUDA: release 10.1, V10.1.243
pytorch: 1.5.0+cu101
torchvision: 0.6.0+cu101
GPU: 2080 TI
docker: 19.03.8
Tried every solution mentioned above, but nothing worked.