GlobalFoundries Unveils SCALE™ Optical Module Solution to Accelerate Co-Packaged Optics for AI Data Centers

GlobalFoundries (GF) USA

Overview

GlobalFoundries (GF) has introduced its SCALE™ optical module solution, designed to accelerate the adoption of Co-Packaged Optics (CPO) for advanced AI data centers. This platform is the industry’s first OCI (Optical Compute Interconnect) MSA-compliant solution, exceeding the requirements of modern AI scale-up architectures. Leveraging GF’s advanced silicon photonics technology with CWDM/DWDM, SCALE significantly boosts bandwidth density and system scalability compared to traditional copper interconnects.

In Depth

The Interconnect Imperative in AI Data Centers

As modern AI data centers expand their computational capabilities and the volume of data transferred between GPUs, they face critical interconnect bottlenecks. Traditional copper interconnects are reaching their limits in terms of power consumption, latency, and bandwidth, impeding the efficient execution of AI workloads. Co-Packaged Optics (CPO) has emerged as a pivotal solution, integrating optical engines much closer to high-performance chips like switch ASICs. This proximity drastically shortens electrical signal paths, leading to significant improvements in power efficiency and bandwidth density.

Introducing GF’s SCALE™ Optical Module Solution

GlobalFoundries (GF) has launched its SCALE™ optical module solution, a breakthrough platform set to accelerate CPO adoption. Positioned as the industry’s first OCI (Optical Compute Interconnect) MSA-compliant platform, SCALE is designed to surpass the requirements of current AI scale-up architectures. The solution is built upon GF’s leading silicon photonics technology and utilizes Coarse Wavelength Division Multiplexing (CWDM) and Dense Wavelength Division Multiplexing (DWDM) for bi-directional data transmission, offering substantial enhancements in bandwidth density and system scalability over conventional copper.

Technical Prowess and Future Outlook

The SCALE solution features certified high-performance photonic devices, including 50Gbps and 100Gbps micro-ring modulators and integrated photodiodes. It also supports copper pad pitches ranging from 110μm down to less than 45μm, enabling advanced 2.5D/3D stacking architectures. Mike Hogan, GF’s Chief Business Officer, emphasizes that SCALE is paving the way for a future of high-bandwidth, energy-efficient connectivity in AI infrastructure. This represents a significant stride towards the industrialization of CPO, addressing data transfer bottlenecks and power consumption challenges in AI data centers. Its features are expected to facilitate a faster transition to volume production of highly efficient AI scale-up architectures. Future considerations include ensuring compatibility with existing systems, managing complex thermal designs, and fostering a robust ecosystem across the supply chain for widespread adoption.