Power Monitoring

Chameleon provides comprehensive power monitoring capabilities to help researchers measure and understand the energy consumption of their experiments.

Tip

For detailed examples, tool installation instructions, and advanced techniques, see our Power Measurement and Management blog post.

Available Power Monitoring Methods

Infrastructure-level monitoring: - Automatic power and temperature data collection via IPMI/DCMI - Works on most server-class Intel and AMD nodes - Provides system-level power consumption data

Application-level monitoring: - etrace2: Energy measurement for individual applications using Intel RAPL - perf: Quick RAPL energy measurements - Scaphandre: Advanced per-process power tracking

Long-term monitoring: - Prometheus exporters and Grafana for continuous data collection and visualization

Hardware Support

Power monitoring support varies by node type: - Full support: Most Intel and AMD compute/GPU nodes - Limited support: Specialized nodes (FPGAs, ARM64) - Temperature monitoring: Only available when nodes are powered on

Getting Started

1. For system-level monitoring: Use ipmitool dcmi power reading to get current power consumption

2. For application-level monitoring: Use etrace2 <your_program> to measure energy consumption of specific applications

3. For detailed instructions: See the power monitoring blog post

Note

Power monitoring tools use software-based estimation models and may include system overhead. For accurate measurements, consider baseline readings and validate with multiple tools when possible.