Discussion: Does Increasing Micro-Batch Values in llama.cpp Actually Improve Output Quality?

Xyklone · reddit · 2026-08-08

A developer took to Reddit asking if others feel that model output quality seems better when using higher micro-batch values (ub) in llama.cpp. Running various quantized models (like Gemma and Qwen) on a Vulkan backend with a 6900xt and locked seeds, the developer perceives a "vibe-based" quality difference. They are asking the community if there is any theoretical reason for this phenomenon or if they are just seeing ghosts.

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