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nvcurve/README.md
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ARIA 76b491b913 docs: add source install instructions and systemd service guide
- Replace PyPI-only install with full source build workflow (npm + uv)
- Add Blackwell GPU fork notice with extended memory offset and fan control
- Add systemd service section: install commands, unit file template, config reference
- Update docs/Installation.md to match npm + uv tool install . workflow
- Update docs/Overview.md with Blackwell-specific capabilities
2026-08-08 15:50:52 +02:00

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<div align="center">
<img src="frontend/public/logo.svg" alt="NVCurve Logo" width="128" />
<h1>NVCurve</h1>
<p><strong>Linux NVIDIA GPU V/F Curve Editor & OC Tool</strong></p>
</div>
---
NVCurve brings MSI Afterburner-style per-point voltage-frequency curve control to Linux via undocumented NvAPI functions. A React web UI for interactive editing and monitoring; a Python CLI for scripting and headless use.
> [!WARNING]
> **Experimental software.** Undocumented NvAPI functions may change between driver releases. Write operations alter GPU operational parameters. Always run `nvcurve setup` before applying changes.
> [!IMPORTANT]
> **Blackwell GPU Fork** — This is a specialized fork with extended memory offset support (> +1000 MHz) and custom fan curve control for Blackwell GPUs (RTX 50-series). Installing the pre-built PyPI package will NOT include these features. You must build from source.
![NVCurve curve editor](.github/screenshots/curve-editor.png)
## Prerequisites
- **Linux** with NVIDIA proprietary drivers
- **Python 3.12+**
- **Node.js 18+** and **npm** (for building the React frontend)
- **[uv](https://docs.astral.sh/uv/)** — Python package manager
- **Root/sudo access** (required for GPU hardware interactions)
## Installation from Source
```bash
git clone <this-repo-url>.git
cd nvcurve
# Build the React frontend
cd frontend
npm install
npm run build
cd ..
# Install the Python package (includes bundled frontend)
uv tool install .
```
After installation, verify hardware compatibility:
```bash
nvcurve setup
```
## Getting Started
```bash
nvcurve # Launch web UI at http://localhost:8042
nvcurve read # Quick curve read from CLI
```
## Systemd Service
Install the daemon for automatic profile loading on boot and optional web server auto-start:
### Install with web server auto-start
```bash
nvcurve service install --auto-serve --host 0.0.0.0 --port 8042
```
### Install daemon only (start web server on demand)
```bash
nvcurve service install
```
### Manage
```bash
nvcurve service start|stop|restart|status
nvcurve service uninstall
```
### Reconfigure
```bash
nvcurve service configure --auto-serve # Enable web server auto-start
nvcurve service configure --no-auto-serve # Disable web server auto-start
nvcurve service configure --host 0.0.0.0 --port 8042
```
### Manual systemd Unit
If you prefer managing the unit file directly, here is the template installed by `nvcurve service install`:
```ini
[Unit]
Description=NVCurve NVIDIA GPU V/F Curve Daemon
After=nvidia-persistenced.service
Wants=nvidia-persistenced.service
[Service]
Type=simple
ExecStart=/usr/bin/python3 -m nvcurve daemon
Restart=on-failure
RestartSec=5
Environment=PYTHONDONTWRITEBYTECODE=1
[Install]
WantedBy=multi-user.target
```
Place at `/etc/systemd/system/nvcurve.service`, then:
```bash
sudo systemctl daemon-reload
sudo systemctl enable --now nvcurve
```
### Persistent Configuration
The daemon reads settings from `/etc/nvcurve/config.json`:
```json
{
"host": "127.0.0.1",
"port": 8042,
"auto_serve": false,
"max_delta_khz": 3000000,
"auto_snapshot": true,
"max_snapshots": 20,
"auto_load_profiles": {
"idx:0": "my_profile"
}
}
```
| Setting | Description |
|---|---|
| `host` | Web server bind address (`0.0.0.0` for network access) |
| `port` | Web server port (default `8042`) |
| `auto_serve` | Auto-start web server on boot |
| `max_delta_khz` | Safety cap for frequency offsets (default 3000 MHz) |
| `auto_snapshot` | Save snapshot before every write |
| `max_snapshots` | Max snapshots to keep (`0` = unlimited) |
| `auto_load_profiles` | Per-GPU profile to apply on boot (`{gpu_key: profile_name}`) |
The GPU key can be a UUID, `pci:XXXX`, or `idx:N` fallback. Find your GPU key with `nvcurve gpus`.
## Documentation
- **[Overview](docs/Overview.md)** — What it does, capabilities, architecture
- **[Installation](docs/Installation.md)** — Prerequisites, source build, troubleshooting
- **[Usage Guide](docs/Usage-Guide.md)** — Web UI, CLI reference, systemd service
- **[Tips and Tricks](docs/Tips-and-Tricks.md)** — Workflows, curve flattening, safety
## Upgrading
```bash
cd nvcurve
git pull
cd frontend && npm run build && cd ..
uv tool install .
```
If running as a systemd service:
```bash
nvcurve service restart
```
## Changelog
See [CHANGELOG.md](CHANGELOG.md).