AWS Graviton
CPU designed by AWS, an Amazon subsidiary
AWS Graviton is a family of 64-bit Arm-based central processing units designed by Amazon Web Services (AWS) for use in its cloud computing infrastructure. The processors are part of AWS's custom silicon program and are used in Amazon Elastic Compute Cloud (EC2) instance families and other AWS services.
The first Graviton-powered EC2 instances were announced in November 2018. Later generations increased core count and added Arm Neoverse cores, newer Arm architecture revisions, higher memory bandwidth and additional vector-instruction support.
Background
AWS developed Graviton after Amazon's acquisition of Annapurna Labs, an Israeli microelectronics company, in 2015. Wired reported that the Graviton project was initiated by the Annapurna Labs team and was intended to allow AWS to more closely integrate processor, server and cloud-service design than would be possible using only merchant processors from Intel or AMD.
AWS's first major Annapurna-developed infrastructure product was the AWS Nitro System, a combination of hardware and software used to offload virtualization, storage, networking and security functions from the main server CPU. Graviton extended this custom-silicon strategy to general-purpose compute instances.
Design
Graviton processors implement the AArch64 execution state of the Arm architecture. AWS states that each Graviton virtual CPU corresponds to a full physical CPU core, rather than to a simultaneous multithreading thread. Graviton2 and later generations use Arm Neoverse server cores, while the first-generation Graviton used Cortex-A72 cores.
AWS documents Graviton processors as having fixed operating frequencies and no turbo mode for Graviton2 and later generations.
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This entry incorporates text from “AWS Graviton” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.