After running a "Advanced Hotspots" analysis, no functions are listed in any of the Hotspots viewpoint tabs.
A 218MiB r008ah/data.0/*.tb6 file is created, so it seems the sampling profiler is recording something.
A "Basic Hotspots" analysis does show some results.
VTune is running on Scientific Linux 6. The sampling drivers appear to be installed correctly. The application is build with g++ 4.8, with -O3. Profiling is started by attaching to a running process and starting recording.
I'm new to VTune, so am not sure where to start troubleshooting. Any advice would be appreciated.