# GPU Bots & Pixel Wrangling GPU Pixel Wrangling is the process of keeping various GPU bots green. On the GPU bots, tests run on physical hardware with real GPUs, not in VMs like the majority of the bots on the Chromium waterfall. Wrangling document has moved. See [GPU Pixel Wrangler](http://goto.google.com/gpu-pixel-wrangler).