Προγραμματισμός ΙΙ: Hardware Energy Monitoring Tools

Tools and practices: Measuring Energy Consumption

• Stefanos Georgiou

Measuring Applications Energy Consumption

• Two ways of measuring energy consumption of computer applications.

  • Direct: Using Board sensors or hard power analysers
    
  • Indirect: Energy estimation models using computer resource usage information
    
• Each of the above has its own pitfalls (low reporting rate, overheat, and so on)
  
• Accuracy is a main concern
  

• Preparing the test-bed is crucail (interferances)

HEMTs: Examples

• Watts Up? Pro
  
• Mosoon
  
• DAQ
  
• INA219

Watts Up? Pro

Watts Up? Pro Info

• display of volts, amps, power factor.
  
• display of average monthly cost and KWH
  
• display of minimun and maximum values
  
• increased 15 amp continuous rating
  
• accuracy of +/- 1.5% watts
  
• super samping

Test-bed Requirements

• A computer node (laptop or server)
  
• An energy monitoring node (e.g., Raspberry Pi)
  
• Watts Up Pro (with a micro USB)
  
• Network connection among the nodes
  
• Install utility on energy monitoring node
  
• Set passwordless SSH among the nodes

Test-bed overview

Source Code to Measure

UNDER CONSTRUCTION

Available on GitHub

UNDER CONSTRUCTION