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It almost certainly requires a heavily customized OS. Those chips are designed for the CPU and GPU to share a unified address space on the GDDR6, there is no t
by dralley 5y ago
It almost certainly requires a heavily customized OS. Those chips are designed for the CPU and GPU to share a unified address space on the GDDR6, there is no traditional DDR memory.
- wmf 5y agoLike all iGPUs...
- dralley 5y agoMost iGPUs do not use a unified address space. They use system RAM, yes. But they get a partition of it to themselves, and the size of this partition is often tweakable in the graphics driver settings. The M1 Mac is one of the few laptops that actually does have fully unified memory. https://eclecticlight.co/2020/11/11/how-unified-memory-blows-the-socs-off-the-m1-macs/ https://eclecticlight.co/2020/11/11/how-unified-memory-blows...
- kcb 5y agoI don't believe that's true. And the driver/bios settings don't really do what people think they do. https://www.intel.com/content/www/us/en/support/articles/000020962/graphics.html https://www.intel.com/content/www/us/en/support/articles/000... And zero copy buffers and unified address space are totally a thing on Intel, AMD, and Nvidia(Tegra) igpus. Sounds like there's more than a bit of "Apple Magic" in that blog post.
- formerly_proven 5y agoAMD APUs have had a unified address space for ten years or so.
- deleted 5y ago[deleted]
- Bancakes 5y agoPlaystation does it just fine and it's freebsd-based.