I have downloaded, compiled, and run the CUDA SDK. Now, I’d like to run some of the examples under double precision. However, every time I put the -arch sm_13 flag in a place in a makefile where I think it should go, the compiler complains at me. Has anyone out there had success in compiling the SDK with DP. If so, can you please tell me exactly where I should put the -arch sm_13 flag?