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> if you want to use ROCm on AMD GPUs, your PCIe complex needs to support "PCIe atomics" Not anymore, at least for Vega cards: https://github.com/RadeonOpenCom
by floatboth 6y ago
> if you want to use ROCm on AMD GPUs, your PCIe complex needs to support "PCIe atomics"
Not anymore, at least for Vega cards: https://github.com/RadeonOpenCompute/ROCm/issues/800#issuecomment-525925928 https://github.com/RadeonOpenCompute/ROCm/issues/800#issueco...
> AMD's boards do, though!
No board support is required, this is on the SoC ("CPU") side, unless you're trying to connect the GPU via a chipset-side low-bandwidth slot.
Intel supports it since Haswell on desktop (and earlier in Xeons apparently), Marvell ThunderX2 and Mellanox BlueField support it, I'm pretty sure Ampere does too.
- spijdar 6y agoYeah, it's the only reason I've thought about upgrading my polaris card up newer. In my case, I tried connecting both via thunderbolt on some skylake/coffeelake laptops and on power9. Neither Intel's TB3 controller nor power9 support the necessary extension. Not really a big deal, but a nitpicky example of how "fragmentation" sometimes hurts.