New Vol. 2 Release 1.3.1 improves interoperability of the InfiniBand ecosystem, while the Virtualization Annex to Vol. 1 Release 1.3 enhances HPC and Cloud network scalability.

BEAVERTON, Ore. – November 29, 2016 – The InfiniBand® Trade Association (IBTA), a global organization dedicated to maintaining and furthering the InfiniBand™ specification, today announced the public availability of the InfiniBand Architecture Specification Volume 2 Release 1.3.1 and a Virtualization Annex to the InfiniBand Architecture Specification Volume 1 Release 1.3. The new Volume 2 specification release expands interoperability and performance management functionality across the InfiniBand ecosystem for both high performance computing (HPC) and enterprise data center networks. The Virtualization Annex extends support for multiple virtualized endpoints within InfiniBand hardware. Both of these publications will be essential to expanding the performance and scalability of future data centers.

The Volume 2 Release 1.3.1 specification adds flexible low-latency Forward Error Correction (FEC) upgrades. This new option enables a best of both worlds – low error rate with low latency. A second enhancement enables the subnet manager to optimize both signal integrity with the lowest power possible from the port. Improved cable management is enabled through updates to QSFP28 and CXP28 memory mapping. The new specification release also improves upon InfiniBand interoperability and test methodologies for the latest data rates, namely EDR 100 Gb/s and FDR 56 Gb/s. This enhancement is achieved through updated EDR electrical requirements, amended testing methodology for EDR Limiting Active Cables, and FDR interoperability and test specification corrections.

To support the ever-increasing deployment of virtualized solutions in HPC and enterprise cloud networks, the IBTA also published a new Virtualization Annex to the Volume 1 Release 1.3 specification. The Virtualization Annex extends the InfiniBand specification to address multiple virtual machines connected to a single physical port. With this new annex, an InfiniBand subnet manager has a more efficient view of each logical endpoint, which significantly reduces the burden on the subnet managers as networks leverage virtualization for system scalability.

“As performance demands continue to evolve in both HPC and enterprise cloud applications, the IBTA saw an increasing need for new enhancements to InfiniBand’s network capabilities, support features and overall interoperability,” said Bill Magro, co-chair of the IBTA Technical Working Group. “Our two new InfiniBand Architecture Specification updates satisfy these demands by delivering interoperability and testing upgrades for EDR and FDR, flexible management capabilities for optimal low-latency and low-power functionality and virtualization support for better network scalability.”

The InfiniBand Architecture Specification Volume 2 Release 1.3.1 and Volume 1 Release 1.3 are available for public download here.

InfiniBand Continues to Lead HPC and Petascale Systems on the TOP500 List

The IBTA is also calling attention to the latest TOP500 List results that confirm InfiniBand’s standing as the leading interconnect family for the world’s most powerful HPC and Petascale systems. Currently, InfiniBand accelerates 65 percent of the HPC platforms on the list; which includes academic, governmental, and research sectors. For supercomputers capable of Petascale performance, InfiniBand represents nearly half of the segment at 46 percent, underscoring the continued preference of HPC architects to deploy InfiniBand given its unique combination of high performance capabilities.

Additionally, the IBTA is excited to announce the arrival of the first RDMA over Converged Ethernet (RoCE) enabled 100GbE system on the TOP500 List along with five 40GbE clusters. RoCE increases overall application performance for Ethernet-based systems through CPU offloads and higher utilization of compute resources.

Published twice a year and publicly available at, the TOP500 list ranks the world’s fastest supercomputer systems according to the LINPAC benchmark rating system.

About the InfiniBand® Trade Association
The InfiniBand® Trade Association was founded in 1999 and is chartered with maintaining and furthering the InfiniBand and the RoCE specifications. The IBTA is led by a distinguished steering committee that includes Broadcom, Cray, HPE, IBM, Intel, Mellanox Technologies, Microsoft, Oracle, and QLogic. Other members of the IBTA represent leading enterprise IT vendors who are actively contributing to the advancement of the InfiniBand and RoCE specifications. The IBTA markets and promotes InfiniBand and RoCE from an industry perspective through online, marketing and public relations engagements, and unites the industry through IBTA-sponsored technical events and resources. For more information on the IBTA, visit

About the RoCE Initiative
The RoCE Initiative promotes RDMA over Converged Ethernet (RoCE) awareness, technical education and reference solutions for high performance Ethernet topologies in traditional and cloud-based data centers. Leading RoCE technology providers are contributing to the Initiative through the delivery of case studies and white papers, as well as sponsorship of webinars and other events. For more information, visit


InfiniBand (TM/SM) is a trademark and service mark of the InfiniBand Trade Association. Other names and brands are the property of their respective owners.

Media Contacts:
Joe Balich
Nereus for IBTA
Tel: +1.503.619.4113