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Oracle doubles Down on Ampere CPUs Despite Divestment, Launches A4 Instances
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Oracle Cloud Infrastructure (OCI) is expanding its compute offerings with new instances powered by Ampere computing’s ampereone M silicon, despite recently selling its stake in the chipmaker. The move signals a commitment to providing customers with diverse hardware options, even as the company pursues a strategy of “silicon neutrality.”
On Monday, Oracle announced the availability of its A4 Standard instances, available in both virtualized and bare metal configurations.These instances leverage the capabilities of Ampere’s processors,offering up to 192 Arm cores on the open market – a departure from the exclusive arrangements seen with competitors like Amazon’s Graviton and Microsoft’s Cobalt.
Did you know?– OCPUs represent two physical cores, mirroring how CPU threads are presented in traditional x86 processors. This allows for familiar scaling and resource allocation for users.
A4 Instances: Core Specs and Configuration
For its OCI deployment,Oracle has selected a 96-core version of the AmpereOne M chip,clocked at 3.6 GHz. The processor features 192 MB of L2 cache and 64 MB of L3 cache, coupled with 12 channels of DDR5 5600MT/s memory.
These cores are packaged and offered to customers as ocpus, with each OCPU comprising two physical cores – a model similar to how CPU threads are presented to users on traditional x86 processors from AMD and Intel. Customers can provision A4 instances with up to 45 OCPUs (90 cores) and 700 GB of system memory in virtual machine form. A bare metal option provides 48 OCPUs (96 cores), 768 GB of DDR5 memory, and 3.84 TB of onboard storage. Both instance types support block storage and up to 100 Gbps of network bandwidth.
Reader question:– What is “silicon neutrality”? It means Oracle will work with multiple chip suppliers, avoiding dependence on a single vendor for its cloud infrastructure.
Performance Gains and Cost Structure
Oracle claims the A4 instances deliver up to 35% higher core-for-core performance compared to its previous-generation A2 instances, which were based on Ampere’s older AmpereOne (non-M) chips. This improvement is attributed to a 20% increase in clock speed and enhanced memory bandwidth facilitated by the 12-channel memory controller.While the A4 instances offer performance gains, the A2 instances remain larger, supporting up to 78 OCPUs (virtualized) and 946 GB of DDR5 memory.
Pricing for OCI A4 instances starts at $0.0138 per OCPU per hour and $0.0027 per GB per hour.
Pro tip:– A4 instances offer a cost-effective choice to x86-based instances for many workloads, particularly those benefiting from high core counts and memory bandwidth.
Silicon Neutrality and future Strategy
The decision to divest from Ampere, according to Oracle CTO and founder Larry Ellison, stems from a desire to prioritize silicon neutrality. “Oracle sold Ampere becuase we no longer think it is strategic for us to continue designing, manufacturing and using our own chips in our cloud datacenters,” Ellison stated. “We are now committed to a policy of chip neutrality where we work closely with all our CPU and GPU suppliers.”
The company has reached out to both Oracle and ampere Computing for further comment, with updates to follow as data becomes available.
This shift in strategy contrasts with the approaches of other major cloud providers. Amazon recently unveiled its third-generation Train
