AMPERE Altra 64 Bit Multi Core Arm Processor User Guide

: June 3, 2024
: AMPERE

Table of Contents

AMPERE Altra 64 Bit Multi Core Arm Processor
Features
SPECIFICATIONS
Predictable Performance
High Scalability
Power Efficiency
Reliability, Availability, and Serviceability (RAS)
Ampere Altra Platforms 1U, 2U, and Half-Width Servers
Ordering Information
Altra Block Diagram
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

AMPERE Altra 64 Bit Multi Core Arm Processor

Ampere® Altra® 64-Bit Multi-Core Arm® Processor
Designed to meet the requirements of modern data centers, Ampere Altra delivers predictable performance, high scalability, and power efficiency for data center deployments from hyperscale cloud to the edge cloud. Drive efficiency in your data center infrastructure workloads, including data analytics, artificial intelligence, database storage, telco stacks, edge computing, and web hosting.

Features

PROCESSOR SUBSYSTEM

80 Arm v8.2+ 64-bit CPU cores up to 3.30 GHz maximum
64 KB L1 I-cache, 64 KB L1 D-cache per core
1 MB L2 cache per core
32 MB System Level Cache (SLC)
2x full-width (128b) SIMD
Coherent mesh-based interconnect
- Distributed snoop filtering

MEMORY

8x 72-bit DDR4-3200 channels
ECC, Symbol-based ECC, and DDR4 RAS features
Up to 16 DIMMs and 4 TB/socket

SYSTEM RESOURCES

Full interrupt virtualization (GICv3)
Full I/O virtualization (SMMUv3)
Enterprise server-class RAS

CONNECTIVITY

128 lanes of PCIe Gen4
- 8 x8 PCIe + 4 x16 PCIe/CCIX with Extended Speed Mode (ESM) support for data transfers at 20/25 GT/s
- 48 controllers to support up to 32 x2 links
192 lanes in 2P configuration
Coherent multi-socket support
4 x16 CCIX lanes

SPECIFICATIONS

Operating Junction Temperature Range
- 0°C to +90°C
Power Supplies
- CPU: 0.75 V, DDR4: 1.2 V
- I/O: 3.3 V/1.8 V, SerDes PLL: 1.8 V
Packaging
- 4926-Pin FCLGA

TECHNOLOGY & FUNCTIONALITY

Arm v8.2+, SBSA Level 4
Advanced Power Management
- Dynamic estimation, Voltage droop mitigation

PERFORMANCE & POWER

Est. SPECrate® 2017_int_base: 300
TDP: 45 W to 250 W

PROCESS TECHNOLOGY

TSMC 7 nm FinFET

Predictable Performance

Ampere Altra offers up to 80 cores at up to 3.30 GHz speed maximum. Each core is single-threaded by design with its own 64 KB L1 I-cache, 64 KB L1 D-cache, and a huge
1 MB L2 cache, delivering predictable performance 100% of the time by eliminating the noisy neighbor challenge within each core.

Coherent mesh-based interconnect topology provides efficient bandwidth with 32 distributed home nodes and directory-based snoop filters to enable seamless connectivity between the cores.

Supporting eight, 2DPC, 72-bit DDR4-3200 channels, the Ampere Altra processor offers high bandwidth and memory capacity of up to 4 TB per socket.

High Scalability

With leading power/core and multi-socket support, Ampere Altra provides the scalability to maximize the number of servers per rack, unparalleled in the industry.
With 128 lanes of PCIe Gen4 per socket with support for 192 PCIe Gen4 lanes in 2P configuration that can be bifurcated down to x2, Ampere Altra provides maximum flexibility to interface with off-chip devices, including networking cards up to 100 GbE or more, and storage/NVMe devices, making it well suited for big data applications.
Ampere Altra supports cache coherent connectivity to off-chip accelerators. 64 of the 128 PCIe Gen 4 lanes support CCIX, that could be used for networking, storage, or accelerator connectivity.

Power Efficiency

Ampere Altra provides industry-leading power efficiency/core, while packing 80 cores in a single-socket and 160 cores in a dual-socket platform, establishing new levels of power efficiency with scalability.

Ampere’s power-optimized design, coupled with 7 nm process technology, enables the Ampere Altra processor to pack in more cores than any other datacenter class processor – all on a single die – enabling datacenter infrastructure providers more cores per rack. Ampere Altra processor’s advanced power management capabilities include Advanced Configuration Power Interface (ACPI) v6.2 support, Dynamic Frequency Scaling (DFS), on-die thermal monitoring, and dynamic power estimation.

Reliability, Availability, and Serviceability (RAS)

The Ampere Altra processor provides extensive enterprise server-class RAS capabilities. Data in memory is protected with advanced ECC in addition to standard DDR4 RAS features. End-to-end data poisoning ensures corrupted data is tagged and any attempt to use it is flagged as an error. The SLC is also ECC protected, and the processor supports background scrubbing of the SLC cache and DRAM to locate and correct single-bit errors before they accumulate into uncorrectable errors.

Ampere Altra Platforms 1U, 2U, and Half-Width Servers

Several platforms are available for various workloads including cloud computing, storage, Android in the cloud, and HPC. Platforms for Ampere processors provide manageability, security, and expandability (via add-in cards).

Visit https://solutions.amperecomputing.com/systems/altra to learn more about Ampere’s Altra-based platforms.
Visit https://www.amperecomputing.com to learn more about Ampere’s Altra processor.

Ordering Information

The ordering information for the currently available SKUs is listed below.

AC-108025002 (80 cores, 250 W)
AC-108021002 (80 cores, 210 W)
AC-108018502 (80 cores, 185 W)
AC-108015002 (80 cores, 150 W)
AC-107219502 (72 cores, 195 W)
AC-106422002 (64 cores, 220 W)
AC-106418002 (64 cores, 180 W)
AC-106412502 (64 cores, 125 W)
AC-106409502 (64 cores, 95 W)
AC-103206502 (32 cores, 65 W)

Altra Block Diagram

AMPERE-Altra-64-Bit-Multi-Core-Arm-Processor-fig-1

Ampere Computing reserves the right to make changes to its products, its datasheets, or related documentation, without notice and warrants its products solely pursuant to its terms and conditions of sale, only to substantially comply with the latest available datasheet.

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