Open the System Characterization results directory
Arm Performix also provides a link to the underlying Arm System Characterization Tool run directory. By following this link, you can inspect plots that are not yet available in the GUI. You can also access the underlying .json data files for integration with other tools.
Select the Open Run Directory button on the Summary page of your run.
Summary view with the Open Run Directory button
This opens a file browser that contains .png and .json files for the various benchmarks.
File browser showing ASCT benchmark output files
Inspect the generated plots
Latency sweep
The latency sweep plot shows how the size of a memory access pattern affects memory latency. Red bars indicate the points at which different cache levels become active.
Latency sweep plot showing cache-level transitions
Bandwidth sweep
The bandwidth sweep plot shows how certain memory access sizes can significantly affect system memory bandwidth. The results are saved in bandwidth.png.
Bandwidth sweep plot across data sizes
Core-to-core latency
The core_latency_heatmap_local.png plot shows a color-coded heatmap of which core combinations incur higher latency.
Core-to-core latency heatmap showing high-latency core pairs
What you’ve learned
You’ve viewed the plots and raw data files generated by the Arm System Characterization Tool.
You’re now ready to analyze and optimize your own platform with Arm Performix and the Arm System Characterization Tool recipe.