Troubleshooting

This page lists common errors and ways to address them.

Before starting your subnet validator node, ensure the following are true:

• Run nvidia-smi

  • This should display your GPU information.

  • Otherwise, you will need to use the following to install your GPU:

    • https://docs.nvidia.com/cuda/cuda-installation-guide-linux

    • https://ubuntu.com/server/docs/nvidia-drivers-installation

• Run python3 -c "import torch; print(torch.cuda.is_available())"or python -c "import torch; print(torch.cuda.is_available())"

  • This should print True

  • Otherwise, reboot your server or ensure you have torch installed.

---

1. I get this error: hypermind.dht.protocol.ValidationError: local time must be within 3 seconds of others on WSL. What should I do?

   All clocks on all nodes need to be synchronized. Please set the date using an NTP server:

   sudo apt install ntpdate
   sudo ntpdate pool.ntp.org

2. The server starts loading blocks and then prints: Killed. What should I do?

   This happens since Windows doesn't allocate much RAM to WSL by default, so the server gets OOM-killed.

   To increase the memory limit, go to C:/Users/username and create the .wslconfig with this contents:

   [wsl2]
   memory=12GB

   Then reboot WSL (run sudo reboot in the WSL console) and it should work fine.

3. I get this error: torch.cuda.OutOfMemoryError: CUDA out of memory. What should I do?

   If you use an Anaconda env, run this before starting the server:

   export PYTORCH_CUDA_ALLOC_CONF=max_split_size_mb:128

   If you use Docker, add this argument after --rm in the Docker command:

   -e "PYTORCH_CUDA_ALLOC_CONF=max_split_size_mb:128"

4. WSL clock tends to get out of synch, which prevents the server from launching with the error hypermind.dht.protocol.ValidationError: local time must be within 3 seconds of others.

   To sync the WSL clock run sudo ntpdate pool.ntp.org. See more fixes discussed at stackverflow.