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#hardware-bug

The lost atomic update on LoongArch LA664

Lobsters Hottest ↗ · yesterday Cached

A bug in the atomic add instruction of LoongArch LA664 CPUs caused infinite loops during software packaging; it was identified with AI assistance and fixed by Loongson with a firmware update.

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#hardware-bug

Getting 50 GB/S Back from the Apple Neural Engine

Hacker News Top ↗ · 2026-09-10 Cached

A performance throttle in the Apple M3 Neural Engine was discovered when weight sizes are multiples of 1 MiB, causing throughput drops. By avoiding the problematic DMA path, token throughput for models like Llama 3.2 and Qwen3-8B was significantly improved.

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