I am using nvprof with --print-gpu-tace and --system-profiling on for profiling.
I have 3 questions actually about this profiling command:
if I don’t specify any function in my code for profiling, the profiling will start from the time my cuda driver API is initialized ? ( I don’t use the driver API in my code but as I understood, things happen implicitly)
What’s the sampling interval, in the cuda profiler options (from profiler-users guide): continuous-sampling-intervaly default value is 2ms ! Isn’t this value ? because it’s not what I see in my profiling informations and it varies pretty much from one line to the other .
What’s the accurancy of these system measuremnts, especially for power ?
Thank in advance for your help,