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  • S_x96x_S

    addikt

    A https://www.semianalysis.com/p/amd-genoa-detailed-architecture-makes

    is kiemeli a CXL-t :

    1.) A 160 sávból - 64 CXL képes:

    "There are no major surprises with the specs. 96 cores, 12 channels of DDR5, and 160 PCIe Gen 5 lanes (64 of which are CXL capable). The CXL-attached memory encryption is critical to security in multi-tenant cloud architectures. "

    2.) A CXL 2.0 for Type 3 memory devices támogatás miatt 2 negyedévet csúszott :Y

    - "AMD generally supports CXL 1.1 but supports CXL 2.0 for Type 3 memory devices."
    "Genoa was delayed 2 quarters to add this feature, and we believe that was the correct decision."

    3.) CXL sávoszthatóság .. ami még nincs a SapphireRapids-ban.

    "One noteworthy item is that the 64 lanes of CXL can be bifurcated into 16 4x devices. As we detailed exclusively here, Sapphire Rapids is not capable of CXL lane bifurcation. If one connects a 4x or 8x CXL device, that will consume all 16 lanes. Emerald Rapids fixes that feature, but that is a year away.
    Hypervisors cannot change the memory assignment under the guest, which is huge for users using CXL-attached memory in the cloud."

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