Home

The Lynsyn Power Measurement Units

The Lynsyn power measurement units perform power profiling of applications running on ARM Cortex A based systems. Although designed for ARM systems, it can be used as a generic power profiling tool. Lynsyn is fully compatible with key development platforms including the Zedboard, the NVIDIA Jetson TX2, the Raspberry Pi 4 and the VCS-1.

Features

• Several independent power sensors
  • 3 for LynsynLite (each measures both voltage and current)
  • 7 for Lynsyn (current only)
• Correlates power measurements with source code by sampling program counters over JTAG
  • JTAG sampling supports ARM Cortex A cores
• Can sample continuously with up to 10kHz sampling frequency
• Can be used as a generic remotely controlled current/voltage meter
• Can be used as a generic USB JTAG programmer with Xilinx Vivado tools.
• Includes open source software that samples and visualises the results

This wiki explains both the hardware boards that exist and the accompanying software. If you are new to Lynsyn and its software, we recommend you to first go trough the guide explaining the task you are interested in.

General Information

• Target Platform Information
• Installation:
  • Installing on Linux
  • Installing on Windows
• Lynsyn Hardware
• Lynsyn Software

Guides

• General Power Measurements
• Power Profiling an ARM Application
• Measurements from the Command Line
• Lynsyn as a Xilinx JTAG Debugger

Using Lynsyn for Research

If you use Lynsyn for scientific purposes, we would appreciate if you could cite the following paper:

"Lynsyn and LynsynLite: The STHEM Power Measurement Units"; Asbjørn Djupdal, Björn Gottschall, Fatemeh Ghasemi and Magnus Jahre; in "Towards Ubiquitous Low-power Image Processing Platforms"; Magnus Jahre, Diana Göhringer and Philippe Millet (Editors); Springer; 2021