You can set RUST_LOG=debug before running to get some verbose logging output.

If you run into any issues don't hesitate to open a ticket or join our Discord.

Running on Linux running-on-linux

Rerun should work out-of-the-box on Mac and Windows, but on Linux you need to first run:

sudo apt-get -y install \
    libclang-dev \
    libatk-bridge2.0 \
    libfontconfig1-dev \
    libfreetype6-dev \
    libglib2.0-dev \
    libgtk-3-dev \
    libssl-dev \
    libxcb-render0-dev \
    libxcb-shape0-dev \
    libxcb-xfixes0-dev \
    libxkbcommon-dev \

On Fedora Rawhide you need to run:

sudo dnf install \
    clang \
    clang-devel \
    clang-tools-extra \
    libxcb-devel \
    libxkbcommon-devel \
    openssl-devel \

On WSL2, in addition to the above packages for Linux, you also need to run:

sudo apt-get -y install \
    libvulkan1 \
    libxcb-randr0 \
    mesa-vulkan-drivers \

TODO(#1250): Running with the wayland window manager sometimes causes Rerun to crash. Try unsetting the wayland display (unset WAYLAND_DISPLAY or WAYLAND_DISPLAY= ) as a workaround.

Startup issues startup-issues

If Rerun is having trouble starting, you can try resetting its memory with:

rerun reset

Graphics issues graphics-issues

Wgpu (the graphics API we use) maintains a list of known driver issues and workarounds for them.

The configuration we use for wgpu can be influenced in the following ways:

  • pass --renderer=<backend> on startup: <backend> must be one of vulkan, metal or gl for native and either webgl or webgpu for the web viewer (see also --web-viewer argument). Naturally, support depends on your OS. The default backend is vulkan everywhere except on Mac where we use metal. On the web we prefer WebGPU and fall back automatically to WebGL if no support for WebGPU was detected.
    • For instance, you can try rerun --renderer=gl or for the web viewer respectively rerun --web-viewer --renderer=webgl.
    • Alternatively, for the native viewer you can also use the WGPU_BACKEND environment variable with the above values.
    • The web viewer is configured by the renderer=<backend> url argument, e.g. []
  • WGPU_POWER_PREF: Overwrites the power setting used for choosing a graphics adapter, must be high or low. (Default is high)

We recommend setting these only if you're asked to try them or know what you're doing, since we don't support all of these settings equally well.

Multiple GPUs multiple-gpus

When using Wgpu's Vulkan backend (the default on Windows & Linux) on a computer that has both integrated and dedicated GPUs, a lot of issues can arise from Vulkan either picking the "wrong" GPU at runtime, or even simply from the fact that this choice conflicts with other driver picking technologies (e.g. NVIDIA Optimus).

In both cases, forcing Vulkan to pick either the integrated or discrete GPU (try both!) using the VK_ICD_FILENAMES environment variable might help with crashes, artifacts and bad performance. E.g.:

  • Force the Intel integrated GPU:
    • Linux: export VK_ICD_FILENAMES=/usr/share/vulkan/icd.d/intel.json.
  • Force the discrete Nvidia GPU:
    • Linux: export VK_ICD_FILENAMES=/usr/share/vulkan/icd.d/nvidia.json.
    • Windows: set VK_ICD_FILENAMES=\windows\system32\nv-vk64.json.