Printf works in CUDA

In order to execute the printf("something") in cuda code, we need to compile the code with an extra parameter i.e. [-arch=sm_20] which enables us to print our output inside cuda kernel.

for example i have my hello.cu file. The following command is use to compile the code.

nvcc -arch=sm_20 -o hello hello.cu

for complete documentation you can follow the link

http://docs.nvidia.com/cuda/cuda-c-programming-guide/index.html#formatted-output