OpenPOWER Foundation

OpenPOWER Foundation. The OpenPOWER Foundation is a collaborative technical community established to foster innovation around the POWER microprocessor architecture. Founded by a consortium of technology leaders, its mission is to create an open ecosystem, enabling members to customize POWER Architecture processors and related components for advanced computing solutions. This open model encourages development across high-performance computing, cloud computing, and accelerated computing markets.

History

The initiative was publicly announced in August 2013 by founding members IBM, Google, Mellanox, NVIDIA, and TYAN. This marked a strategic shift for IBM, opening its proprietary POWER Architecture to broader industry collaboration for the first time. The formal launch occurred in December 2013 at an event in San Francisco, with early contributions including IBM's release of the POWER8 processor specifications. A pivotal moment came in 2019 when IBM contributed the complete POWER Instruction Set Architecture to the Linux Foundation, leading to the formation of the OpenPOWER-aligned OpenPOWER ISA workgroup. This transition underscored the project's evolution towards a fully open governance model under a major open-source consortium.

Technical specifications

The technical foundation is the openly licensed POWER Instruction Set Architecture, which serves as the basis for processor designs. Core specifications include detailed documentation for processor cores, memory controllers, and the Coherent Accelerator Processor Interface (CAPI). Key hardware implementations have included the POWER8, POWER9, and POWER10 microprocessor families from IBM. The architecture supports advanced features like simultaneous multithreading and integration with field-programmable gate array (FPGA) and GPU accelerators via open interfaces. Reference designs and firmware, such as the OpenBMC firmware stack, are also openly developed to support system implementation.

Members and governance

The consortium has included a global roster of technology firms, research institutions, and end-users. Prominent members over time have included IBM, Google, NVIDIA, Mellanox (now part of NVIDIA), Xilinx (now part of AMD), Samsung, and Hitachi. Academic and research members have included the Lawrence Livermore National Laboratory and the University of Oxford. Governance originally operated through a board of directors and technical steering committees. Following the move to the Linux Foundation, project governance aligns with the Linux Foundation's open collaborative models, with technical direction set by participating members and workgroups.

Projects and initiatives

Notable projects include the development of open-source firmware like Skiboot and Hostboot, which are core to the OPAL (OpenPOWER Abstraction Layer) runtime. The Open Compute Project (OCP) accepted contributions for OpenPOWER-based server designs, such as those from TYAN and Rackspace. The OpenPOWER-initiated OpenCAPI (Coherent Accelerator Processor Interface) consortium developed a high-performance open interface standard. Academic initiatives, like the MIT-IBM Watson AI Lab collaboration, have leveraged the open hardware for research. The community also actively contributed to the Linux kernel and GNU Compiler Collection (GCC) toolchain for the architecture.

Impact and adoption

The open model significantly influenced the high-performance computing sector, with POWER9 systems forming the backbone of major supercomputers like the Lawrence Livermore National Laboratory's Sierra and the Oak Ridge National Laboratory's Summit. It enabled cloud providers, including Google and IBM Cloud, to deploy custom POWER-based infrastructure. The initiative spurred innovation in accelerated computing and artificial intelligence workloads by facilitating tighter integration between POWER CPUs and accelerators from NVIDIA and Xilinx. By transitioning core intellectual property to the Linux Foundation, the project ensured the long-term, vendor-neutral evolution of the POWER Instruction Set Architecture within the global open-source community. Category:Open source hardware organizations Category:Computer architecture Category:Linux Foundation projects