EmbeddingGemma 2: an open, lightweight multimodal embedding model
deepmind.google·6d ago
AI Engineering
Lobsters·Aug 23·5 min read
Why aren't my two Cortex-A9 cores cache coherent?
TL;DR
The author explores programming on the Terasic DE0-Nano-SOC, a development kit with two Cortex-A9 cores, while facing challenges with cache coherence. Despite its overheating issue, the author successfully implements basic functionality and considers expanding the project further.
✦ Why It Matters
Consider adding active cooling solutions to your development boards to prevent overheating during intensive tasks.
Key Takeaways
- Explore using Rust for embedded systems on ARM architecture.
- Ensure the MMU is enabled for proper memory handling.
- Implement a basic UART driver for console output.
- Avoid memory conflicts by carefully managing memory layout.
How It Works
The author created a memory layout that skips the Boot ROM and initialized a simple UART driver to communicate with the console. By using a Rust const function, they generated a Level 1 page table for the MMU, allowing for proper memory management and cache coherence between the two Cortex-A9 cores.