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    Home»AI»Google’s Ironwood: A New TPU Optimized for Inference Efficiency of AI
    AI

    Google’s Ironwood: A New TPU Optimized for Inference Efficiency of AI

    EchoCraft AIBy EchoCraft AIApril 9, 2025No Comments4 Mins Read
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    At its recent Cloud Next conference, Google introduced Ironwood, the seventh generation in its Tensor Processing Unit (TPU) lineup.

    Google Ironwood TPU Key Takeaways

    Highlights

    Inference-Optimized TPU: Ironwood is Google’s first TPU designed exclusively for inference, signaling a strategic shift toward supporting low-latency, high-efficiency AI deployments.
    Flexible Cluster Configurations: Offered in both 256-chip and 9,216-chip configurations, Ironwood is tailored to meet the diverse demands of medium-scale development and full-scale enterprise production.
    High Performance Specifications: Each Ironwood chip delivers 4,614 TFLOPs of compute power, 192GB of dedicated memory, and bandwidth speeds up to 7.4 Tbps, ensuring rapid responses for real-time applications.
    Innovative SparseCore Technology: The inclusion of SparseCore minimizes on-chip data movement, reducing latency and enhancing overall power efficiency during inference tasks.
    Improved Energy Efficiency: Ironwood achieves twice the performance per watt of the previous Trillium TPU, highlighting its commitment to operational efficiency and reduced environmental impact.
    Seamless Ecosystem Integration: Integrated into Google Cloud’s AI Hypercomputer and compatible with NVIDIA’s Vera Rubin accelerators, Ironwood delivers versatile deployment options for a wide range of AI workloads.

    Unlike previous iterations, Ironwood is the company’s first TPU designed exclusively for inference—the process of running AI models post-training. This design marks a strategic shift in Google’s AI hardware focus as demand for low-latency, high-efficiency inference grows.

    Cluster Configurations Targeting Scale and Flexibility

    Ironwood will be deployed later this year for Google Cloud customers, available in two primary cluster sizes:

    • 256-chip configuration for medium-scale workloads
    • 9,216-chip configuration for high-scale, production-level AI services

    These setups aim to address a variety of cloud deployment needs, from development environments to full-scale enterprise applications.

    Performance and Hardware Specifications

    Each Ironwood chip delivers 4,614 teraflops (TFLOPs) of peak compute performance, as per Google’s internal testing. It features:

    • 192GB of dedicated memory
    • Bandwidth speeds up to 7.4 terabits per second

    These specs are intended to support resource-intensive AI inference tasks such as:

    • Real-time recommendation engines
    • Ranking systems
    • Generative AI applications requiring rapid response

    SparseCore and Power Efficiency

    Ironwood introduces a new core component called SparseCore, which is optimized for data-heavy workloads. It is particularly suited for applications that demand rapid processing of personalized content—like product suggestions or social media feed generation.

    The architecture has also been refined to minimize on-chip data movement, helping to reduce latency and improve power efficiency across inference tasks.

    Performance Leap from Trillium TPU

    Ironwood demonstrates a tenfold performance increase over Google’s previous-generation Trillium TPU, highlighting a significant jump in hardware capabilities. This advancement aligns with the increasing complexity and resource demands of contemporary AI workloads.

    Focus on Energy Efficiency

    Google reports that Ironwood achieves twice the performance per watt compared to Trillium, emphasizing energy efficiency alongside performance. This focus aligns with ongoing efforts to reduce the environmental impact of large-scale data center operations.

    Expanding Cloud Infrastructure

    Ironwood’s launch occurs within a broader trend of cloud providers investing in custom AI hardware. Google’s new TPU joins a growing field of proprietary chips from major players:

    • Amazon’s Trainium and Inferentia (AWS)
    • Microsoft’s Cobalt 100 (Azure)

    These moves reflect a wider shift toward in-house silicon development aimed at improving integration, performance, and cost control within cloud platforms.

    Google also plans to integrate Ironwood into its AI Hypercomputer architecture, a modular supercomputing platform that underpins many of its AI services.

    This integration is expected to enhance deployment flexibility and accelerate model execution for enterprise clients.

    Collaboration with NVIDIA

    In addition to its proprietary TPUs, Google has confirmed plans to support NVIDIA’s upcoming Vera Rubin accelerators within its cloud ecosystem.

    This dual strategy allows customers to choose between custom Google silicon and third-party hardware based on workload demands, broadening the range of supported AI use cases.

    Strategic Emphasis on the Inference Era

    Amin Vahdat, VP at Google Cloud, described Ironwood as a key development in the “age of inference,” citing its combination of compute power, memory capacity, network performance, and operational reliability.

    The TPU adds a new layer to Google’s chip strategy, aiming to make inference as scalable and efficient as model training—particularly relevant for businesses deploying AI in real-world environments.

    AI Google Hardware Ironwood TPU
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