Chris Evans  11 January 2022  Cloud,  Enterprise,  Opinion,  Processing Practice: CPU & System Architecture,  Processors  Leave a Comment  Two ye

Arm Architectures in the Public Cloud

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2022-01-13 09:00:08

Chris Evans 11 January 2022 Cloud, Enterprise, Opinion, Processing Practice: CPU & System Architecture, Processors Leave a Comment

Two years ago, back in January 2020, we asked the question as to whether Arm processors were ready for the enterprise data centre.  In this post, we look at what’s changed since then and how the balance of power could shift between Intel, AMD and Arm.

The premise for an initial discussion justifying Arm in the enterprise came from the announcement of Graviton2 processors by AWS at Reinvent in December 2019.  The original Graviton design was first announced in November 2018.  AWS had already developed the Nitro hardware ecosystem, and the team responsible, Annapurna Labs (acquired 2015), looked at the possibility of developing SoCs (systems-on-chip). 

Graviton1 is based on Cortex-A72 cores, whereas Graviton2 moved to the Neoverse N1 architecture based on Cortex-A76.  Graviton3 extends the capabilities of the N1 architecture (although AWS hasn’t expressly indicated what’s under the covers), with DDR5 and PCIe 5.0 support and greater than 25% performance improvement over Graviton2 (AWS numbers). 

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