  In this technical report, we detail our first-place solution for the 2024
Waymo Open Dataset Challenge's semantic segmentation track. We significantly
enhanced the performance of Point Transformer V3 on the Waymo benchmark by
implementing cutting-edge, plug-and-play training and inference technologies.
Notably, our advanced version, Point Transformer V3 Extreme, leverages
multi-frame training and a no-clipping-point policy, achieving substantial
gains over the original PTv3 performance. Additionally, employing a
straightforward model ensemble strategy further boosted our results. This
approach secured us the top position on the Waymo Open Dataset semantic
segmentation leaderboard, markedly outperforming other entries.
