b11626: model: split layers evenly when no device reports free memory (#29677)
When every device reports zero free memory the split points are normalized by a zero sum, the NaN split sends layers to a device index past the end and loading aborts with vector::_M_range_check.
Executive Summary
When every device reports zero free memory the split points are normalized by a zero sum, the NaN split sends layers to a device index past the end and loading aborts with vector::_M_range_check.
Artificial Intelligence Architecture & Model Evaluation
From an artificial intelligence architecture, model weights governance, and inference efficiency perspective: - **Weights Accessibility & Sovereignty:** Evaluates whether weights are open for private self-hosting or locked behind centralized cloud APIs. - **Quantization & Edge Performance:** Kernel optimizations (4-bit/8-bit GGUF, AWQ, EXL2) allow high tokens-per-second on consumer GPUs and Apple Silicon. - **Reasoning & Architectural Scaling:** Scrutinizes mixture-of-experts (MoE), attention mechanisms, and fine-tuning datasets against open community benchmarks.
Impact on the Open Ecosystem
Protects developers and enterprises from proprietary black-box entrapment, fostering auditable, sovereign AI infrastructure.