Running GLM-5.2 5x faster at 500tps with limitation (opens in new tab)

I rented an 8×B200 and tried to run GLM-5.2 on TileRT, the runtime MiMo used to push a 1T model past 1000 tok/s. TileRT doesn't support GLM-5.2, so I reverse-engineered its IndexShare attention and weight-remapped it onto the kernel. Result: ~480 tok/s, OpenRouter-identical quality, ~5× faster than vLLM on the same GPUs, capped at 2048 tokens by the closed kernel. The apples-to-apples numbers (TileRT 480 / vLLM 96 / OpenRouter 104), why MTP made vLLM slower, and what it'd take to beat it.