error: identifier "__hadd2" is undefined

[Joseph_A]

@mkcolg

Hi Peter,

I believe nvcc defaults to targeting older devices that don’t support half precision. Try setting the gpu architecture to CC70.

% nvcc main.cu
main.cu(15): error: identifier "__hadd2" is undefined

1 error detected in the compilation of "/tmp/tmpxft_000020b0_00000000-8_main.cpp1.ii".
% nvcc main.cu --gpu-architecture=compute_70
%

Hope this helps,
Mat

Thank you for your answer. It worked.