Segment 36

This sub-session achieved a decisive breakthrough by successfully upgrading the entire CUDA stack from 12.8 to 13, which finally unblocked Blackwell-native optimizations for the 8× RTX PRO 6000 PCIe system. The assistant patched SGLang's torch_symm_mem and kimi_k25.py modules to properly recognize SM120, enabling both FlashInfer allreduce fusion and Torch symmetric memory to function correctly. FlashInfer allreduce fusion dramatically reduced the EAGLE-3 verify pass latency, improving speculative decoding from 54.1 tok/s (40% slower than baseline) to 96.1 tok/s (3.8% faster than baseline). Parallel benchmarking revealed that EAGLE-3 is beneficial at low concurrency but becomes a liability at high concurrency, leading to a plan for dynamic speculation disabling based on server load.

The CUDA 13 Breakthrough: Transforming EAGLE-3 Speculative Decoding from Net-Negative to Net-Positive on Blackwell GPUs 4000 words

Chunks

• The CUDA 13 Breakthrough: How a High-Stakes Stack Upgrade Transformed Blackwell Speculative Decoding
  3210 words
• From Net-Negative to Net-Positive: The CUDA 13 Breakthrough That Transformed EAGLE-3 Speculative Decoding on Blackwell
  2371 words