Benchmark Shows Unified Memory Significantly Boosts Local LLM VRAM Efficiency
Pablo_the_brave · reddit · 2026-08-22
A developer released the 'ctx-cliff' benchmark to detect VRAM limits in local LLMs. The test reveals that setting GGMLCUDAENABLEUNIFIEDMEMORY=1 is critical, as it leverages NVIDIA's hardware MMU for fine-grained memory management, reducing fragmentation and enabling VRAM-to-RAM offloading.
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