Qwen3.8 27B
M5 Max 36GB · Ollama · 16,384 ctx
- generation:
- 19.0 tokens/s
- quant:
- Q4_K_M (GGUF)
User compares Qwen3.8 27B variants on an M5 Max 36GB Mac Studio under Ollama 0.40.13, with single API requests on a 14k-token prompt at num_ctx 16384. Plain Q4_K_M in llama.cpp gives ~19 tok/s, nvfp4 in the MLX runner ~35-46 tok/s, and Q4_K_M with MTP ~36-38 tok/s (28 at 14k context). In real Cline agent sessions the MLX runner's held memory grows from 20 GB to 26.5 GB with peak 29.8 GiB in about 6 minutes, and swap reaches 8 GB of 9 GB. The llama.cpp runner with MTP holds ollama ps at 16 GB but the llama-server process reaches 19-20 GB RSS and swap grows from 1.7 to 4.4 GB. User links Ollama issues on prefix-cache accumulation and the llama-server host prompt cache (--cache-ram 8192 MiB) and plans to try LLAMA_ARG_CACHE_RAM=1024 or 0 via launchctl setenv, removing the mmproj, and LM Studio's MLX runtime or mlx_lm.server.