Hardware capability problem

I have three GPU installed on different workstation: Titan Xp, GTX 690 and GTX 480. They are all installed on the same configuration, UBUNTU 17.10 with pgi 18.4.

OpenACC does not work on the GTX 480 because the capability is 2.0, even when I use the flag cc20. The compilation line is

pgfortran -ta=tesla -Mcuda=cc20 -acc -o exec.out

Is thera a way to fix it ?

Hi Antonio,

I think this might be a driver issue. 18.4 supports the cc20 option, but CUDA 8.0+ drivers do not support cc20. You’ll need to manually install the 7.5 drivers and specify the version with -ta=cuda7.5