How could add optimization flag -O3 for device code?
Is it enabled by default?
Yes , the default level is -O3 , see NVCC :: CUDA Toolkit Documentation .
You can specify optimization levels in Property Page | CUDA C/C++ | Command Line | Additional Option | ‘-Xptxas -Ox’
Thank you very much.
How could remove any -Ox optimization?
‘-Xptxas -O0’ turns off optimization .
Thank you again.