PC Sampling is a profiling method that uses statistical approximation of the kernel execution by sampling GPU program counters. Furthermore, the method periodically chooses an active wave (in a round robin manner) and snapshot it's program counter (PC). The process takes place on every compute unit simultaneously which makes it device-wide PC sampling. The outcome is the histogram of samples that says how many times each kernel instruction was sampled.
**Note**: The PC sampling feature is still under development and may not be completely stable.
By activating this feature through `ROCPROFILER_PC_SAMPLING_BETA_ENABLED` environment variable, you acknowledge and accept the following potential risks:
- **Hardware Freeze**: This beta feature could cause your hardware to freeze unexpectedly.
- **Need for Cold Restart**: In the event of a hardware freeze, you may need to perform a cold restart (turning the hardware off and on) to restore normal operations.
