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vLLM integrates HiSparse memory tier for GLM 5.3 KV cache offloading

#vllm#kv-cache#offloading#glm

The vLLM blog describes integrating HiSparse as a pressure-driven memory tier that works with the Hybrid Memory Allocator and KV offloading. This allows GLM 5.3 requests to continue decoding when their KV cache no longer fits in GPU memory, maintaining high concurrency.

Coverage timeline

  1. vLLM BlogvLLM Team
    GLM 5.3 Optimizations, Part 1: Hybrid HiSparse Offloading in vLLM

    vLLM integrates HiSparse as a pressure-driven memory tier that composes with the Hybrid Memory Allocator and KV offloading, letting GLM 5.3 requests keep decoding when their KV no longer fits in GPU memory, so concurrency stays high.

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