Integrating Ethernet, PCIe, And UCIe For Enhanced Bandwidth And Scalability For AI/HPC Chips


By Madhumita Sanyal and Aparna Tarde Multi-die architectures are becoming a pivotal solution for boosting performance, scalability, and adaptability in contemporary data centers. By breaking down traditional monolithic designs into smaller, either heterogeneous or homogeneous dies (also known as chiplets), engineers can fine-tune each component for specific functions, resulting in notable im... » read more

Why PCIe And CXL Are Essential Interconnects For The AI Era


As the demand for AI and machine learning accelerates, the need for faster and more flexible data interconnects has never been more critical. Traditional data center architectures face several challenges in enabling efficient and scalable infrastructure to meet the needs of emerging AI use cases. The wide variety of AI use cases translate into different types of workloads. Some require high ... » read more

PCIe IP With Enhanced Security For The Automotive Market


The automotive industry is undergoing a rapid transformation, with connectivity and automation becoming integral components of modern vehicles. However, this increased connectivity also brings heightened risks. The automotive industry takes many measures to ensure safety for vehicles, but it is crucial to understand that these safety measures are ineffective if the vehicle's security is comprom... » read more

Formally Modeling and Verifying CXL Cache Coherence (Imperial College London)


A new technical paper titled "Formalising CXL Cache Coherence" was published by researchers at Imperial College London. Abstract "We report our experience formally modelling and verifying CXL.cache, the inter-device cache coherence protocol of the Compute Express Link standard. We have used the Isabelle proof assistant to create a formal model for CXL.cache based on the prose English spec... » read more

PIO on Current HW Outperforms DMA Over a Range of Payload Sizes In A Number of Different Applications (ETH Zurich)


A new technical paper titled "Rethinking Programmed I/O for Fast Devices, Cheap Cores, and Coherent Interconnects" was published by researchers at ETH Zurich. Abstract: "Conventional wisdom holds that an efficient interface between an OS running on a CPU and a high-bandwidth I/O device should be based on Direct Memory Access (DMA), descriptor rings, and interrupts: DMA offloads transfers fr... » read more

Partial Header Encryption In Integrity And Data Encryption For PCIe


Partial Header Encryption (PHE) is an additional mechanism added to Integrity and Data Encryption (IDE) in PCIe 6.0 to prevent side-channel attacks based on attacker analysis of the information included in the headers. This blog narrates PHE flow and Cadence VIP support for PHE in IDE across PCIe/CXL protocols. Background Introducing PCIe's Integrity and Data Encryption Feature is an excell... » read more

CMA/SPDM—An Additional Layer of Security for PCIe Transport


In today’s data-driven world, everyone is navigating a vast ocean of information that transcends across unsecured links and can easily fall prey to digital hackers. To keep our data safe, it is crucial to beef up security and make sure that only the right users can access our data. This article dives into the world of secure communication, where component measurement and authentication (CM... » read more

PCIe Over Optical: Transforming High-Speed Data Transmission


With the rise in AI requiring new computing models and enhanced data transmission methods to cope, the necessity for innovative, high-performance, and low-latency connectivity solutions has never been more apparent. PCIe over Optical is set to play a key role in enabling the growth of AI, and here we examine some of the intricacies of PCIe over Optical to explore its implementation, challenges,... » read more

Unifying Storage Diversity: Leveraging PCIe IP for Multi-Device, Multi Form Factor Designs


In the fast-paced world of data storage, designers are racing to keep up with ever-evolving interface standards and form factors. This whitepaper explores the impact of these industry shifts, focusing on the integration of PCIe interfaces within the context of varying storage device form factors like the Enterprise and Datacenter Standard Form Factor (EDSFF). PCIe designs need to be flexible in... » read more

Essential Insights for Design PCIe 6.0 Interconnects


PCI Express (PCIe) is a serial communication protocol that has progressed through generations to enhance data rates and functionality. The latest version, PCIe 6.0, doubles the data rate to 64 GT/s, enabling up to 256 GB/s of bandwidth in an x16 configuration. The technology incorporates PAM4 signaling and forward error correction to maintain high speeds with improved signal integrity and relia... » read more

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