A car AI chip that keeps its operating system on board
Cars need computers that are ready the instant the driver turns the key. Normally a chip loads its operating system and AI model from memory outside the chip, and that takes time.
Aisin and Tohoku University built a 16 nm system-on-chip with STT-MRAM, a magnetic memory that keeps data with the power off, placed next to the processor. The operating system and the AI model both live on the chip. The partners say kernel boot, the core of the operating system starting, fell from 2,535.3 ms to 65.7 ms. AI processing fell from 594.6 ms to 58.5 ms, and object detection used about a fiftieth of the usual energy. They presented it at an IEEE circuits conference in Taiwan on 1–4 November.