Anaconda Enterprise: Documentation

# 3.15. CUDA Frequently Asked Questions

## 3.15.1. nvprof reports “No kernels were profiled”

When using the `nvprof` tool to profile Numba jitted code for the CUDA target, the output contains `No kernels were profiled` but there are clearly running kernels present, what is going on?

This is quite likely due to the profiling data not being flushed on program exit, see the NVIDIA CUDA documentation for details. To fix this simply add a call to `numba.cuda.profile_stop()` prior to the exit point in your program (or whereever you want to stop profiling). For more on CUDA profiling support in Numba, see Profiling.