Unverified50% confidenceFactExact time
GPU 在大模型推理时的核心瓶颈是内存带宽，自回归生成每个 Token 需从 HBM 加载完整 KV Cache，计算利用率通常不到 5%
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9/10/2026
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Unverified传统GPU如NVIDIA A100/H100在推理阶段面临内存带宽瓶颈，模型权重需要在每次生成Token时从显存反复读取77% similarUnverifiedFor million-token-level contexts, KV Cache can consume tens or even hundreds of gigabytes of GPU memory, becoming the primary bottleneck for long-context inference.77% similarUnverified研究《Accelerating Block Low-Rank Foundation Model Inference on Memory-Constrained GPUs》提出基于块低秩分解的方案压缩内存并加速推理76% similarUnverified缺少独立 GPU 的设备运行 2B 参数模型时生成速度可能低于每秒 5 个 token76% similarUnverifiedKV缓存（Key-Value Cache）策略将已计算的注意力键值对存储在GPU显存中以供复用，会大量占用GPU内存资源75% similar
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