CARM Benchmarking

To display your architecture’s roofline in the CARM GUI, you need to benchmark it using the CARM Tool.

Important: For compatibility, use the latest version of the CARM Tool from PyPI, which is also installed via pip.

How It Works

1. Run the CARM Tool on the target architecture to measure peak performance (flops/cycle) and peak memory bandwidth for each memory level.
2. The tool generates a roofline CSV file for your machine.
3. CARM-Paraver reads this file to display the roofline in the GUI.

The data typically lives in ~/.local/share/carm/roofline/<machine>_roofline.csv. If not, check where platformdirs stores the data on your system.

Sample Rooflines

The CARM Tool ships with a set of sample rooflines from a MareNostrum 5 GPP node, which can be used for testing and development without benchmarking your own system.