Common issues with setting up via NVIDIA Sync
| Symptom | Cause | Fix |
|---|---|---|
| Permission denied on docker ps | User not in docker group | Run Step 1 completely, including terminal restart |
| Browser doesn't open automatically | Auto-open setting disabled | Manually navigate to localhost:12000 |
| Model download fails | Network connectivity issues | Check internet connection, retry download |
| GPU not detected in container | Missing --gpus=all flag | Recreate container with correct start script |
| Port 12000 already in use | Another application using port | Change port in Custom App settings or stop conflicting service |
Common issues with manual setup
| Symptom | Cause | Fix |
|---|---|---|
| Permission denied on docker ps | User not in docker group | Run Step 1 completely, including logging out and logging back in or use sudo |
| Model download fails | Network connectivity issues | Check internet connection, retry download |
| GPU not detected in container | Missing --gpus=all flag | Recreate container with correct command |
| Port 8080 already in use | Another application using port | Change port in docker command or stop conflicting service |
NOTE
DGX Spark uses a Unified Memory Architecture (UMA), which enables dynamic memory sharing between the GPU and CPU. With many applications still updating to take advantage of UMA, you may encounter memory issues even when within the memory capacity of DGX Spark. If that happens, manually flush the buffer cache with:
sudo sh -c 'sync; echo 3 > /proc/sys/vm/drop_caches'