PMT is a high-level software library capable of collecting power consumption measurements on various hardware. The library provides a standard interface to easily measure the energy use of devices such as CPUs and GPUs in critical application sections. PMT is developed by The Netherlands Institute for Radio Astronomy (ASTRON) and École Polytechnique Fédérale de Lausanne (EPFL) https://git.astron.nl/RD/pmt


Overview

PMT can be seen as a library which calls "lower level" libraries that allow reporting the energy consumption of various system-on-chip power domains. PMT supports the following Hardware/Libraries:

  • RAPL (Running Average Power Limit)
  • LIKWID (“Like I Knew What I’m Doing.”)
  • NVML
  • ROCm
  • Xilinx
  • Tegra (support for NVIDIA Jetson platforms)

In the Figure below you can see some of the monitoring capabilities (there are many more than what is shown in the plot) of PMT across a variety of algorithms and architectures.

Image Source: https://ieeexplore.ieee.org/document/10027520

RAPL (C++) example

Load the pmt module on Snellius first.

module load 2022
module load pmt/1.2.0-GCCcore-11.3.0

Then try this pseudo code out.

#include <pmt.h> // needed for PMT
#include <iostream> 

// Initialize the Sensor
auto sensor = pmt::rapl::Rapl::create();

// Read from the PMT Sensor
auto start = sensor->read();

some_function_that_you_want_to_time();

// Read from the PMT Sensor
auto end = sensor->read();

std::cout << "RESULTS-------" << std::endl;
std::cout << "PMT Seconds: " << pmt::PMT::seconds(start, end) << " s"<< std::endl;
std::cout << "PMT Joules: " << pmt::PMT::joules(start, end) << " J" << std::endl;
std::cout << "PMT Watts: " << pmt::PMT::watts(start, end) << " W" << std::endl;


RAPL (Python) example

Load the pypmt module on Snellius first.

module load 2022
module load pypmt/1.2.0-foss-2022a

Then try this pseudo code out.

import pypmt
from pypmt import joules, seconds, watts

# Initialize the Sensor
pmt = pypmt.Rapl.create()

# Read from the Sensor
start = pmt.read()

some_function_that_you_want_to_time()

# Read from the Sensor
end = pmt.read()

print("joules {}".format(pypmt.joules(start, end)))
print("watts {}".format(pypmt.watts(start, end)))
print("seconds {}".format(pypmt.seconds(start, end)))



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