Comment by wtallis
2 months ago
Essentially, the Grace CPU is a memory and IO expander that happens to have a bunch of ARM CPU cores filling in the interior of the die, while the perimeter is all PHYs for LPDDR5 and NVLink and PCIe.
2 months ago
Essentially, the Grace CPU is a memory and IO expander that happens to have a bunch of ARM CPU cores filling in the interior of the die, while the perimeter is all PHYs for LPDDR5 and NVLink and PCIe.
> have a bunch of ARM CPU cores filling in the interior of the die
The main OS needs to run somewhere. At least for now.
Sure, but 72x Neoverse V3 (approximately Cortex X3) is a choice that seems more driven by convenience than by any real need for an AI server to have tons of somewhat slow CPU cores.
there are uses cases where those cores are used for aux processing. there is more to these boxes than AI :-)
2 replies →
fully agree!
with MGX and CX8 we see PCIe root moving to the NIC, which is very exciting.