AWS introduced Graviton3 at re:Invent 2021

During the course of re:Invent (2021) in Las Vegas, AWS CEO Adam Selipsky announced the future availability of AWS’s new Graviton3 processor. This announcement came two years after the launch of Graviton2 and in the middle of the battle for server processor supremacy traditionally dominated by the x86_64 architecture. Graviton3 is based on an AArch64 (arm) architecture and will power the first family of 7th generation EC2 instances. The new processor promises to boost almost every aspect of performance versus Graviton2, and to position itself as the strongest competitor to the new AMD and Intel server processors, particularly as a more economical option.
As usual AWS has been tight-lipped discussing this project and there is only so much that we know about the new processor. In a similar fashion to Graviton2, it has been developed by Annapurna Labs using 5 nm technology and comes in a single socket with 64 cores running at 2.6 GHz, which means a very slight increase versus Graviton2 (2.5 GHz). For HPC apps, critical upgrades include doubling the capacity of double-precision operations per cycle, using PCI-Express 5.0, and being the first processor to include DDR5 memory, which has about 50 percent more bandwidth than the DDR4 memory commonly used by the older generation of server processors. Other technical enhancements seem to be the upgrade to ARMv8.5 ISA and doubling the L3 cache. Some initial quantifications estimate a performance improvement close to 60% in double-precision operations, which bodes well for HPC apps.
At the time of this newsletter, AWS still has not communicated us our preview window, but we will provide an update as soon as we have tested the new instances.