llama.cpp Updates: The --fit Flag and CUDA Cumsum Optimization
Published:Dec 25, 2025 19:09
•1 min read
•r/LocalLLaMA
Analysis
This article discusses recent updates to llama.cpp, focusing on the `--fit` flag and CUDA cumsum optimization. The author, a user of llama.cpp, highlights the automatic parameter setting for maximizing GPU utilization (PR #16653) and seeks user feedback on the `--fit` flag's impact. The article also mentions a CUDA cumsum fallback optimization (PR #18343) promising a 2.5x speedup, though the author lacks technical expertise to fully explain it. The post is valuable for those tracking llama.cpp development and seeking practical insights from user experiences. The lack of benchmark data in the original post is a weakness, relying instead on community contributions.
Key Takeaways
Reference
“How many of you used --fit flag on your llama.cpp commands? Please share your stats on this(Would be nice to see before & after results).”