llama.cpp Memory Inefficiency with Qwen Context? User Reports

nullc · reddit · 2026-08-14

A user finds llama.cpp is significantly less memory-efficient for Qwen architecture compared to muse glimmer on the same hardware: glimmer supports 24x128k contexts, while Qwen only 3x256k or 6x128k. Despite architectural analysis suggesting Qwen's per-token state is smaller, actual performance is worse, indicating a potential memory inefficiency in llama.cpp for Qwen, impacting batched performance.

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