1

If I run ./deviceQuery without sudo:

./deviceQuery Starting...

 CUDA Device Query (Runtime API) version (CUDART static linking)

cudaGetDeviceCount returned 30
-> unknown error
Result = FAIL

But running it with sudo (sudo ./deviceQuery) works, and after I run it once with sudo, subsequent runs of ./deviceQuery without sudo also results in pass.

My guess is that the first run with sudo initialises some files correctly which would otherwise cause it to fail. I am not sure how to debug this further, however.

kanghj91
  • 11

1 Answers1

0

When I build i had to do:

sudo make -j4

Otherwise some errors pop out, then I had same problem.

Change permissions from inside samples folder:

sudo chmod 755 -Rf *
sudo chown nobody:nogroup -Rf

Hope its not to layman way tho :D

yourstruly
  • 117