HyperTransport Consortium White Papers

Click on a title to download the whitepaper.

2009
	Scalable Computing – Why and How This white paper explores the challenges of scalable, virtualized computing and how HyperTransport delivers system scalability and cross-system resource sharing capabilities that answer the industry’s enterprise and scientific computing requirements.
2008
	The Future of High-Performance Computing: Direct Low Latency CPU-to-Subsystem Interconnect This white paper reflects on the challenges of high performance computing system design and introduces the performance advantages of the HyperTransport HTX direct CPU-to-board-level subsystem interconnect compared to other in-system slot connector standards. It concludes by pointing out the business benefits that the HTX connectivity standard offers to system and high performance subsystem manufacturers.
2007
	Versatile Low Latency HyperTransport Core This white paper presents the design of a generic HyperTransport core that is specially optimized to achieve very low latency. The core has been system-verified using FPGA rapid prototyping methodology. This exhaustive verification and the generic design allow mapping of the core into both ASIC and FPGA solutions.
	HyperTransport NIC for Ultra-low Latency Message Transfer The white paper describes a high performance network interface card sporting extremely low latency and specifically designed for the most efficient clustering of servers based on HyperTransport-enabled processors, such a AMD's Opteron.
	Advanced Interconnect Standards Blend Serial and Parallel Techniques for Best Performance and Scalability This white paper compares and contrasts serial and parallel interconnect characteristics and illustrates how such characteristics have come together in the HyperTransport and PCI Express interconnect standards for best-of-both-worlds value delivery.
	Speculative Forwarding: An Implementation for Reduced Latency in HyperTransport Technology-based Systems The white paper illustrates a new method for further reducing latency in HyperTransport-based systems. The document describes the implementation and use of speculative forwarding as a functional option that could significantly reduce latency in long HyperTransport link chains while preserving full compatibility with existing HyperTransport specifications
2006
	Latency Comparison between HyperTransport and PCIe in Communications Systems This white paper discusses why latency is an important parameter of these interconnects; then contrasts and compares the latency experienced by transactions carried over two of the leading chip-to-chip interconnect standards, HyperTransport and PCI-Express (PCIe). It presents a couple of usage scenarios involving read accesses and derives the latency performance of each.
	A Memory-Efficient Implementation of the HyperTransport Coupon-Based Flow Control Protocol This white paper proposes an enhanced flow control optimization intended to use buffers more efficiently within the HyperTransport protocol. It is important to note that such implementation does not require changing the HyperTransport Link Specification, therefore is completely backwards compatible.
2004
	HyperTransport I/O Technology Overview This white paper provides a general introduction and overview to the HyperTransport I/O technology, including packet and electrical protocols.
	HyperTransport I/O Technology DirectPacket™ Overview This white paper provides a concise overview of the HyperTransport DirectPacket Specification and explains concepts such as or Priority Request Interleaving™ (PRI).
	HyperTransport I/O Technology Comparison with Other I/O Technologies This white paper provides a comparison and contrast between HyperTransport technology and other I/O technologies such as PCI, PCIe and RapidIO.
2002
	HyperTransport Technology: Optimized for Digital Video and Audio This white paper elaborates on the unique advantages that HyperTransport technology brings to digital media applications.
	HyperTransport Technology: Simplifying System Design The white paper illustrates the architectural flexibility, the ease of design and implementation, as well as the electrical solidity that HyperTransport technology offers to the IC and system industries.
	Meeting the I/O Bandwidth Challenge: How HyperTransport Technology Accelerates Performance in Key Applications This white paper highlights how HyperTransport technology improves performance and simplifies the design of several high performance applications including personal computers, multiprocessor servers and network equipment.
2001
	HyperTransport Technology I/O Link This document discusses the HyperTransport technology link, including protocols, electrical and infrastructure issues.