Driving innovation in hyperscale AI accelerators with advanced I/O chiplet

Alphawave Semi has announced that Rebellions Inc. has selected its multiprotocol I/O Connectivity Chiplets for its next-generation product, REBEL. This collaboration will allow Rebellions to deliver unprecedented bandwidth for its chipset compute accelerator SoC.

Rebellions' composable AI accelerator, created for Generative AI workloads in AI and hyperscale data centres, will use industry-leading connectivity from Alphawave Semi. Its expertise in interoperable connectivity IP, custom silicon design, and chiplets will allow a faster path from specification to composable silicon, accelerating time to market.

The company's advanced I/O chiplet integrates its PCIe 6.0, CXL 3.1, and Ethernet subsystems with UCIe 2.0 die-to-die connectivity, providing a versatile multi-rate, multiprotocol solution for NPU connectivity. This provides Rebellions with a low-risk, accelerated development timeline, which allows rapid deployments for hyperscale data centres, thanks to the silicon-proven functionality and performance of Alphawave Semi's flexible solutions.

Alphawave Semi's UCIe subsystem solution is the foundation for the REBEL -based chiplet derivatives, allowing high-density, power-efficient die-to-die communication. Employing Alphawave Semi's technology, the REBEL series includes REBEL-I/O, enhancing I/O connectivity with the latest Ethernet and PCIe standards via UCIe 2.0-enabled chiplets.

"Alphawave Semi offers the highest-performance connectivity IPs in the industry, but what truly influenced our decision was their leadership in customisable chiplet-based designs," said Jinwook Oh, CTO of Rebellions. "They have demonstrated expertise in both high-speed connectivity and interoperable chiplet architectures, delivering to the industry not just proven IP but also standard chiplet products. This foundation enables us to deliver scalable, AI workload optimised, chiplet based family. As the first startup to integrate a chiplet and I/O die architecture, we will continue to lead in chiplet-based innovation."

"Rebellions' roadmap showcases their commitment to driving innovation and pushing the boundaries of performance in the industry," said Mohit Gupta, Alphawave Semi's SVP and GM, Custom Silicon and IP, of Alphawave Semi. "By embracing a chiplet approach, they are not only accelerating development timelines but also ensuring flexibility to address the diverse demands of AI workloads."

Rebellions announced that REBEL will be deployed as modular building blocks, scalable from single cards to full racks. The company claims the chiplets demonstrate remarkable gains in energy efficiency in running prominent models compared to incumbent solutions.