DiffusionGemma 4 26B (4B active)

User reports DiffusionGemma 26B-A4B-it at about 100 t/s generation on 4x RX 7900 XTX, or 45-60 t/s total including prompt processing. Setup is vLLM on the dgemma branch with the diffusion sampler entropy_bound, a 152,671-token KV cache, and max concurrency 1.16x at 131k context.