Support

Machete DGX connects to your own NVIDIA DGX Spark — or any Linux host with SSH — over your network or VPN. There is no cloud in between, which is the point, and also the first thing to check when nothing connects.

Contact

[email protected] — we answer within 2 business days. Please include your app version (Settings → About), your device model, and your iOS or Android version.

Getting started

• On the Spark, check SSH is running: sudo systemctl status ssh
• Find its address: hostname -I
• In the app, tap Add server and enter the host, username, and password or private key.
• Optional: install the on-server agent from Settings, for alerts, backups and reports that must run while your phone is asleep.

It will not connect

• Phone and Spark must be on the same network, or joined through a VPN such as Tailscale.
• Test from a computer on that network: ssh user@address. If that fails too, the problem is the server or the network, not the app.
• Check the port — 22 unless you changed it — and the firewall: sudo ufw status
• The connection test stops after 20 seconds. A timeout means the handshake never completed: wrong address, blocked port, or a host that is routable but silent.

Authentication fails

• Password logins need PasswordAuthentication yes in /etc/ssh/sshd_config.
• Private keys must be in OpenSSH format. Passphrase-protected keys work — you will be asked for the passphrase.

GPU or container data is missing

• GPU metrics need nvidia-smi on the host.
• Container features need the login user in the docker group: sudo usermod -aG docker $USER, then log out and back in.

Image generation

• The app installs ComfyUI as a container and can shelve it again. Shelving is docker stop — the container and everything downloaded stay on disk, so switching it back on takes a second rather than a full first-run build.
• A shelved installation is not a missing one. The setup card shows the switch to resume it.
• Gated models on Hugging Face need a token in Settings and the licence accepted on the model's own page. The app checks whether acceptance went through.

Subscription

• Restore a purchase on a new device from the paywall screen.
• Cancel in your store account: iOS Settings → your name → Subscriptions, or Google Play → Payments and subscriptions.
• Deleting your account does not cancel a subscription. See the Terms of Use.