GPU Power Monitoring

This project aims to implement fast GPU power monitoring system using INA260 sensors connected to a Raspberry Pi 3

Connection

Four INA260 are used to measure two GPU powers simultaneously

Changeing Raspberry i2c Speed

In order to achieve higher i2c speed, it is required to change the default i2c speed of Raspberry Pi from 100Mbp to 2Mbps

1. Open /boot/config.txt file

sudo nano /boot/config.txt

2. Find the line containing /boot/config.txt and add ,i2c_arm_baudrate=1200000 to the end of the line. Also add force_turbo=1 line to the file. The resut would become like the following

...
force_turbo=1
# Uncomment some or all of these to enable the optional hardware interfaces
dtparam=i2c_arm=on,i2c_arm_baudrate=1200000
...

3. reboot the Raspberry Pi

sudo reboot

4. Verify if the changed are applied

bash i2cspeed.sh