OPTIONAL: Setting NVIDIA GPU Power Limit at System Startup

Overview

This guide explains how to set the power limit for NVIDIA GPUs at system startup using a systemd service. This ensures the power limit setting is persistent across reboots.

Steps

1. Create and Configure the Service File

Open a terminal and create a new systemd service file:

sudo nano /etc/systemd/system/nvidia-power-limit.service

Add the following content to the file, replacing 270 with the desired power limit (e.g., 270 watts for your GPUs):

For Dual GPU Setup:

[Unit]
Description=Set NVIDIA GPU Power Limit

[Service]
Type=oneshot
ExecStart=/usr/bin/nvidia-smi -i 0 -pl 270
ExecStart=/usr/bin/nvidia-smi -i 1 -pl 270

[Install]
WantedBy=multi-user.target

For Quad GPU Setup:

[Unit]
Description=Set NVIDIA GPU Power Limit

[Service]
Type=oneshot
ExecStart=/usr/bin/nvidia-smi -i 0 -pl 270
ExecStart=/usr/bin/nvidia-smi -i 1 -pl 270
ExecStart=/usr/bin/nvidia-smi -i 2 -pl 270
ExecStart=/usr/bin/nvidia-smi -i 3 -pl 270

[Install]
WantedBy=multi-user.target

Save and close the file.

2. Apply and Enable the Service

Reload the systemd manager configuration:
```
sudo systemctl daemon-reload
```

Enable the service to ensure it runs at startup:

sudo systemctl enable nvidia-power-limit.service

3. (Optional) Start the Service Immediately

To apply the power limit immediately without rebooting:

sudo systemctl start nvidia-power-limit.service

Verification

Check the power limits using nvidia-smi:

nvidia-smi -q -d POWER

Look for the "Power Management" section to verify the new power limits.

By following this guide, you can ensure that your NVIDIA GPUs have a power limit set at every system startup, providing consistent and controlled power usage for your GPUs.

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