Gopesh Bhardwaj
6c41b8d73a
* Doc updates for AFAR V * doc updates * Updating All AFAR history * updating table with --output-format * updating doc for yaml and json support * Update source/docs/pc_sampling.md * Update README.md * Update source/docs/pc_sampling.md Co-authored-by: Vladimir Indic <139573562+vlaindic@users.noreply.github.com> * Update pc_sampling.md --------- Co-authored-by: Ammar ELWazir <ammar.elwazir@amd.com> Co-authored-by: Vladimir Indic <139573562+vlaindic@users.noreply.github.com>
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1.1 KiB
Markdown
11 行
1.1 KiB
Markdown
# PC Sampling Method
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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.
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**Note**: The PC sampling feature is still under development and may not be completely stable.
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**Risk Acknowledgment**:
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- By activating this feature through `ROCPROFILER_PC_SAMPLING_BETA_ENABLED` environment variable, you acknowledge and accept the following potential risks:
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- **Hardware Freeze**: This beta feature could cause your hardware to freeze unexpectedly.
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- **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.
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Please use this beta feature cautiously. It may affect your system's stability and performance. Proceed at your own risk.
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