XC Series

Cray XC Series Supercomputers

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DataWarp™ Applications I/O Accelerator

Drive your data at warp speed.

Big data, HPC and supercomputing storage infrastructure managers need a balanced compute-memory-storage system architecture with an innovative cache tier featuring SSD and in-memory flash. The tier should accommodate “bursty” application I/O patterns through a combination of high-bandwidth and low-latency I/O forwarding to deliver thousands to millions of aggregate IOPS to applications.

The Cray® XC™ series DataWarp™ applications I/O accelerator technology addresses these modern I/O needs by delivering a balanced and cohesive system architecture from compute to storage. The DataWarp accelerator allocates storage dynamically in either private (dedicated) or shared modes. Storage performance quality of service can be provided to individual applications, based on the user’s policies.

DataWarp I/O Accelerator Brochure
DataWarp Video

Cray DataWarp technology delivers:

  • Flash SSD I/O blades and Aries high-speed interconnect
  • Data virtualization software, management software and I/O forwarding mechanisms
  • Ability to scale up a data pool to customer requirements
  • Performance gains: I/O and total system compute, bandwidth and IOPS
  • I/O system flexibility, data shared across multiple levels
  • Integration and support: hardware, software, networking, partners, open source
  • Reduced storage system costs and improved total cost of ownership
  • System balance and efficiency across memory-flash-disk
  • Workflow efficiencies and ease-of-use advances


Global storage cache

While leveraging Cray’s proven domain expertise in storage, the DataWarp accelerator can be used as a global storage cache for parallel file systems (PFS) such as Lustre®, General Parallel File System (GPFS™) and PanFS™.

Customers who purchase the DataWarp accelerator options with their Cray® XC™ series systems will gain access to future releases of the technology and the complete DataWarp accelerator roadmap, which will allow for an expanding repertoire of use cases.

Featured Resources

Cray XC Series Supercomputers

The Cray XC series supercomputer is a groundbreaking architecture upgradable to over 500 petaflops per system and delivering sustained and scalable application performance.

The Cray Programming Environment

Get improved application performance with the Cray Programming Environment (Cray PE), a fully integrated software suite with compilers, tools and libraries designed to maximize programmer productivity, application scalability and performance.

Scaling the Supercomputing Performance Spectrum: Arm Supercomputing

The world’s first production-ready Arm-based supercomputer comes with a complete set of tools that makes it more robust and easier to use, and that provides critical performance enhancements for HPC workloads.

Cray XC Series Supercomputers

Cray XC series supercomputers: advancing research, engineering and scientific discovery for all mankind.

The Arm Advantage for HPC Workloads

Researchers in academic labs and commercial R&D groups continue to need more compute capacity, making it necessary to use the latest high-performance computing (HPC) technologies. One option increasingly getting attention is systems based on Arm® processors.

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Software for Cray XC Series Supercomputers

Driving Maximum Program Performance, System Uptime and Big Data Analytics

Programming Productivity and Performance – We take a comprehensive approach to our XC series software programming environment, delivering a package of HPC-optimized programming tools, Linux® OS and a massively scalable analytics suite. We also work with domain experts to bring you innovative partner solutions.

Maximizing Uptime with System Management – To get the most workload production out of your supercomputing system, Cray provides a robust system management stack with a broad variety of utilities and support, optimizing production HPC environment reliability.

Analytics and AI at the Speed of Supercomputing – With Cray® Urika®-XC AI and analytics, XC users can unlock sophisticated big data analytics and unleash machine and deep learning — both at the speed of supercomputing using modern frameworks, languages and tools. With no need to purchase purpose-built solutions, the Cray Urika-XC software suite enables customers to get more value from their investment in Cray XC systems.

Comprehensive Programming Environment Support for:

  • Programming languages
  • Programming models
  • Compilers
  • Tools
  • I/O libraries
  • Optimized libraries for science and machine learning
  • Partner middleware
  • Partner ISV codes and

Cray System Management Software Drives:

  • More system uptime
  • More workload productivity and throughput
  • More efficient upgrades and updates while in operation
  • More rollback protection, less lost operation or downtime
  • More ease-of-use leveraging industry standardization

Urika-XC Analytics Tools Help You:

  • Unlock sophisticated big data analytics
  • Maximize your investment — no need for a separate analytics machine
  • Benefit from a robust set of analytics tools including Apache® Spark™, TensorFlow™, Cray Graph Engine, Python with distributed Dask, BigDL Distributed Deep Learning, Jupyter Notebooks and many more

Cray Linux® Environment

Cray XC series systems utilize the Cray Linux Environment (CLE). CLE is a suite of high performance software that includes a Linux-based operating system designed to run large, complex applications and scale efficiently to more than 500,000 processor cores. The Linux environment features a compute kernel that can be configured to match different workloads. When running highly scalable custom applications, the compute nodes can be run in a lightweight mode, ensuring that operating system services do not interfere with application scalability. This design ensures virtually nothing stands between your scalable application and your hardware.

With CLE many independent software vendor (ISV) applications are available "out of the box," benefiting from Cray's network and MPI libraries through MPICH application binary interface compatibility. In addition, selected ISV applications are highly tuned and available under Extreme Scalability Mode (ESM).

Examples of Typical Applications Available Under ESM

A few of the HPC industry applications that may be run on Cray XC systems include:

  • Astrophysics: Cactus, Chimera, Gadget, QCD-Milc, ZEUS-MP
  • Chemistry/Materials: ABINIT, AMBER, CPMD, DCA++, GAMESS, Gromacs, LAMMPS, LS3DF, LSMS, Madness, NWCHEM, PARATEC, Qbox, Quantum Espresso, Siesta, TBMD, VASP
  • Climate/Weather: 4DVAR, CAM, CCSM, HIRLAM, HYCOM, MM5, POP, WRF
  • Fluid Mechanics/Combustion: AcuSolve, DNS, OpenFOAM, Overflow, PFLOTRAN, S3D
  • Fusion: Aorsa, GTC
  • Solid Mechanics: CTH, LS-DYNA

Programming Environment

The CLE programming environment includes tools designed to complement and enhance each other, resulting in a rich, easy-to-use programming environment that facilitates the development of scalable applications.

  • Parallel programming using OpenMP and OpenACC within the node, and MPI, Cray SHMEM, UPC and Fortran Coarrays across the system
  • MPI standard, optimized to take advantage of the scalable interconnect in Cray XC series systems
  • Various MPI libraries supported under Cluster Compatibility Mode
  • Support for ISO standard languages including: Fortran 2008 (including parallel programming using coarrays), C 11, C++ 14
  • Support for shared memory programming using Unified Parallel C
  • Machine learning plugin to enhance industry-standard frameworks with improved scalability, performance and ease of use
  • High-performance-optimized math libraries of BLAS, FFTs, LAPACK, ScaLAPACK, SuperLU and Cray scientific libraries
  • Cray Performance Tool Suite with CrayPAT™, Cray Apprentice2™ and Cray Reveal™

Shifter (Docker) Container Support

To provide the flexibility and performance of Docker containers, Cray XC series systems include support for Shifter — a Docker-like container environment designed for the demands of a massive, multi-processor supercomputer. With Shifter, Cray brings the application portability and ease-of-use of containers for highly-scalable applications to Cray’s advanced supercomputers.

With Shifter as part of Cray’s official software distribution, XC series users can implement software containers that package an entire software stack — application codes, shared libraries, base operating system files, user environment variables, dependencies and more — into easily-deployable images that contain everything an application needs to run with increased efficiency across multiple nodes.

Cray System Management Support

To get the most workload production out of your supercomputing system, Cray provides a robust system management stack with a broad variety of utilities and support.

The Cray System Management Workstation leverages industry-standard infrastructure and interfaces to improve ease of use and shorten learning curves, while also providing management innovations to optimize production HPC environment reliability.

To maximize uptime, Cray supports more efficient methods of performing staged system upgrades and rolling out patches while the system remains operational. XC series supercomputers continue to get real work done while intelligently scheduling and managing updates as resources become available and around running jobs.

Cray’s management tools also provide the ability to snapshot the system state and provide protective rollback support, reducing lost operation cycles and downtime managing system updates. The Image Creation and Provisioning Service, Configuration Management Framework and Power Management utilities enable datacenter staff to administer their supercomputers with efficiency and confidence.

Effective System Monitoring Reduces Overhead

The Cray System Snapshot Analyzer (SSA) proactively addresses system health with remote, automated system status checks, or “snapshots.” When failures and issues occur, the snapshots can expedite solution turnaround time. Using the SSA for system query and data collection can dramatically improve issue detection and minimize the typical user overhead involved with communicating symptoms to our support team.

Cray® XC™ Series: Adaptive Supercomputing

Extreme Scalability and Sustained Performance

Cray has an established reputation for regularly running the biggest jobs on the largest numbers of nodes in the HPC industry. The Cray® XC™ series puts even more focus on solving extreme computational challenges. Cray XC series systems scale hardware, networking and software across a broad performance spectrum to deliver true sustained, real-world production performance.

Production-Ready Arm-Based Supercomputing

With the addition of Arm-based processors, Cray XC50 users now have options for choice and flexibility. Compute blades can be mixed and matched with Intel® Xeon® Scalable processors, Intel® Xeon Phi™ processors and NVIDIA® Tesla® GPU accelerators. The expanded ecosystem makes HPC more accessible for a wide variety of applications and users.

A production Arm-based Cray XC50 supercomputer featuring a complete HPC-optimized software stack, including the Cray Linux® Environment and Cray Programming Environment, gives researchers, scientists and engineers complete access to libraries and tools optimized for running complex HPC workloads.

Aries™ Interconnect and Dragonfly Topology

To provide this breakthrough performance and scalability, Cray XC series supercomputers integrate the HPC-optimized Aries interconnect. This innovative network technology, implemented with a high-bandwidth, low-diameter topology called Dragonfly, provides substantial improvements on all of the network performance metrics for HPC: bandwidth, latency, message rate and more. Delivering global bandwidth scalability at reasonable cost across a distributed memory system, this network gives programmers global access to all of the memory of parallel applications and supports the most demanding global communication patterns. The open architecture of the Cray XC series offers intranode flexibility, empowering users to run applications with either scalar or accelerator processing elements depending on their requirements for parallelism.

Cray XC series systems exploit a Dragonfly network topology — constructed from a configurable mix of backplane, copper and optical links — providing scalable global bandwidth, avoiding expensive external switches and enabling easy in-place processor upgrades. Cray XC air-cooled systems utilize backplane and copper cabling only to reduce costs for simulation, test, development, analytics and AI environments. Depending on whether a cabinet is air- or liquid-cooled, each cabinet can be populated with up to three chassis (one for air-cooled systems), culminating in up to 384 sockets per cabinet.

The Aries ASIC provides the network interconnect for compute nodes on Cray XC series base blades and implements a standard PCI Express Gen3 host interface, supporting a wide range of HPC processing compute engines. The universal nature of Cray XC series open architecture allows the system to be configured with the best available devices today, then augmented or upgraded in the future with the user’s choice of processors, coprocessors and accelerators using processor daughter cards.

Intel® Xeon® and Intel® Xeon Phi™ Processors

For Intel processor support, Cray XC series compute blades come in a variety of configurations.

  • Intel Xeon Phi and Intel Xeon Scalable processors are packaged in a dual-socket node configuration, with four nodes supported in each system blade. The Intel Xeon Scalable processors provide more than 10,000 cores and enable more than 700 teraflops per Cray XC liquid-cooled cabinet, and 230 teraflops per Cray XC air-cooled cabinet.
  • Intel Xeon Phi processors are packed in a single-socket node configuration, with four nodes supported in each system blade, providing up to 586 TF/cabinet of peak performance.

NVIDIA® Tesla® GPU Accelerators

Cray XC series supercomputers support CPU-hosted NVIDIA Tesla GPU accelerators. Two options are available: the NVIDIA Tesla K40 for the XC40 system and the NVIDIA Tesla P100 PCIe for the Cray XC50 system. NVIDIA’s P100 GPU accelerator delivers over 3,500 embedded cores and flexible mixed-precision computing options. The P100 offers flexible double-precision, single-precision or half-precision compute operation and also integrates high-bandwidth memory into the package, enabling up to 3x memory bandwidth improvements over prior-generation external-memory GPU solutions.

The Cray XC50 system with the Tesla P100 delivers superior application performance, memory bandwidth and performance per watt. Cray also supports multiple programming models for the P100 GPU accelerator, including the Cray compiler, OpenACC directives-based coding and CUDA.

Arm-Based Processors

Cray XC series supercomputers support Cavium ThunderX2™ processors. With 16 DDR4 DIMMs per node, users can access up to 512 GB per node at up to 240 GB/s, addressing a common performance bottleneck in high-performance computing workloads.

The ThunderX2 processor is supported by Cray’s complete HPC-optimized software stack including the Cray Linux Environment and premium programming environment. The enhanced Cray compiler and programming environment improve the performance of the Cavium ThunderX2 processors.

Custom and ISV Jobs on the Same System — Extreme Scale and Cluster Compatibility

Based on generations of experience with both environments, Cray has leveraged a single machine architecture to run both highly scalable custom workloads as well as industry-standard ISV jobs via the powerful Cray Linux Environment (CLE). CLE enables a Cluster Compatibility Mode (CCM) to run Linux/x86 versions of ISV software without any requirement for porting, recompiling or relinking. Alternatively, Cray’s Extreme Scalability Mode (ESM) can be set to run in a performance-optimized scenario for custom codes. These flexible and optimized operation modes are dynamic and available to the user on an individual job basis.

ROI, Upgradeability and Investment Protection

Besides being customizable for each user’s requirements, the Cray XC series supercomputer architecture is engineered for easy, flexible upgrades and expansion, a benefit that prolongs its productive lifetime and the user’s investment. As new technology advancements become available, users can take advantage of these next-generation progressions deep into the life cycle before ever considering replacing an HPC system.

To view a full list of our partners, click here.

Solution Partners

Adaptive Computing

Together, Cray and Adaptive Computing help customers manage HPC workloads to optimize application performance, increase system utilization and achieve organizational objectives. ... show more The software’s unique intelligent and predictive capabilities evaluate the impact of future orchestration decisions across diverse workload domains (HPC, HTC, big data and cloud VMs), thereby optimizing cost reduction, speeding product delivery and driving a competitive advantage.

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Altair and Cray together provide the market-leading HPC hardware and software solution required to optimize performance for compute-intensive work. With Cray systems running Altair software, companies gain the highest levels of scalability, speed and efficiency. Altair empowers client innovation and decision-making through technology that optimizes the analysis, management and ... show more visualization of business and engineering information. Altair is the only company to create HPC solvers and simulation applications (HyperWorks), deliver HPC management tools (PBS Works), and use these applications and tools to solve real HPC issues. With a track record for high-end software and consulting services for engineering, computing and enterprise analytics, Altair consistently delivers a competitive advantage to customers in a broad range of industries.

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ANSYS and Cray enable customers to solve the most challenging CFD models, whether it's a single simulation using tens of thousands of cores or tens of simulations each using thousands of cores. ANSYS, Inc., founded in 1970, develops and globally markets engineering simulation software and technologies used by engineers and designers across a broad spectrum of industries. ... show moreANSYS technologies help companies create innovative high-quality products and processes that meet customer and cost requirements, while shortening time-to-market and reducing development costs. Simulation delivers these benefits by enabling an information-based product development process, with virtual prototyping to optimize designs at earlier stages of development.

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CD-adapco is the leading global provider of full-spectrum engineering simulation solutions for fluid flow, heat transfer and stress, including CFD software, CAD-embedded CFD, CAE consulting services and training. STAR-CD and STAR-CCM+ provide the world’s... show more most comprehensive CFD solutions. Their integrated CAE process allows engineers to focus more on product design by giving them a single easy-to-use interface to automatically handle complex models through the complete analysis cycle: preprocessing, meshing, solution, post-processing. CD-adapco’s solutions are used across many industries, including automotive, aerospace, appliances, buildings, chemical process, electronics, environmental, marine, offshore structures, pharmaceuticals, power generation, rail, turbomachinery and specialized mechanical engineering applications.

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Exa Corporation

Exa Corporation offers fluid dynamics simulation software and services that enhance product performance, reduce product development costs and improve the efficiency of design and engineering processes. Exa's simulation solutions help customers gain crucial insights about design performance early in the design cycle,... show more reducing the likelihood of redesigns and late-stage engineering changes. Benefits include significant cost savings and fundamental improvements in engineering development processes. Exa Corporation's products include PowerFLOW®, PowerDELTA®, PowerCLAY®, PowerVIZ®, PowerSPECTRUM®, PowerACOUSTICS®, PowerINSIGHT®, PowerCOOL® and PowerTHERM® along with professional engineering consulting services.

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Intel, the world leader in silicon innovation, develops technologies, products, and initiatives to continually advance how people work and live. Founded in 1968 to build semiconductor memory products, Intel introduced the world's first microprocessor in 1971. The company designs and builds the... show more essential technologies that serve as the foundation for the world's computing devices. Intel’s mission is to create and extend computing technology to connect and enrich the lives of every person on earth.

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Livermore Software Technology

Livermore Software Technology Corporation develops LS-DYNA® and related engineering software products. LS-DYNA is a general-purpose transient dynamic finite element program that simulates complex real-world problems. It includes a Pre/Post Processor, LS-PrePost®, and a tightly integrated optimization code,... show more LS-OPT®. LS-DYNA, LS-PrePost and LS-OPT are used in various industries, including automobile design, aerospace, manufacturing and bioengineering. LS-DYNA development is focused on one code methodology that includes implicit, explicit, SMP and MPP solvers. It is optimized on all platforms including clusters running Unix, Linux and Windows.

Livermore Software Technology Corporation Solutions >


MathWorks is the leading developer of mathematical computing software. MATLAB, the language of technical computing, is a programming environment for algorithm development, data analysis, visualization and numeric computation. Simulink is a graphical environment for simulation... show more and model-based design of multidomain dynamic and embedded systems. Engineers and scientists worldwide rely on these product families in the automotive, aerospace, electronics, financial services, biotech-pharmaceutical and other industries. MathWorks products are also used in universities and learning institutions worldwide.

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Metacomp Technologies

Metacomp Technologies and Cray work closely together to help mutual customers benefit from optimal performance of Metacomp software on Cray hardware. Metacomp Technologies is at the forefront of cutting-edge simulation technology with software products for computational fluid dynamics (CFD++), computational aeroacoustics (CAA++), ... show more mesh generation (MIME) and computational structural mechanics (CSM++) including MetaFSI for fluid-structure interactions. Founded in 1994 by pioneers in CFD and validated by industry, government institutions and universities worldwide, and with an unparalleled reputation for high-level support, Metacomp will work hard to be an integral part of your success. 

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Numerical Algorithms Group

The Numerical Algorithms Group (NAG) delivers high-quality computational software and high performance computing services. For 40 years NAG experts have worked closely with world-leading researchers in academia and industry to create powerful, reliable and flexible... show more software that is relied on by tens of thousands of individual users, as well as numerous independent software vendors. NAG serves its customers from offices in Oxford (U.K.), Chicago, Tokyo and Taipei, through staff in France and Germany, and via a global network of distributors.

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Cray and NVIDIA are working together to create innovative accelerated supercomputer solutions with best-of-breed performance, scalability and reliability. These solutions feature NVIDIA® Tesla® GPUs, which accelerate the most demanding HPC and deep learning datacenter workloads.

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Platform Computing

Platform Computing is a pioneer and the global leader in high performance computing (HPC) management software. The company delivers integrated software solutions that enable organizations to improve time-to-results and reduce computing costs.... show more Many of the world’s largest companies rely on Platform to accelerate compute- or data-intensive applications and manage cluster and grid systems. Platform has over 2,000 global customers and strategic relationships along with the industry’s broadest support for HPC applications.

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Rogue Wave Software

Rogue Wave is the largest independent provider of cross-platform, embeddable libraries and development tools for HPC application design, testing and deployment. Rogue Wave’s tools and components empower software developers to take advantage of the performance... show more and scalability that multicore and parallel technologies offer, and are proven by decades of use solving some of the world’s most complex problems in commercial enterprise, academia, defense and institutional research.

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Dassault Systèmes SIMULIA

The Abaqus Unified FEA product suite offers powerful and complete solutions for both routine and sophisticated engineering problems covering a vast spectrum of industrial applications. Dassault Systèmes SIMULIA works with Cray to ensure that their product suite works seamlessly on Cray systems. Dassault Systèmes SIMULIA applications — including Abaqus, CST, fe-safe, Isight, Tosca, Simpack, Wave6 and XFlow — ... show more enable users to leverage physics-based simulation and high-performance computing to explore and improve real-world behavior of products, nature and life. As an integral part of the Dassault Systèmes 3DEXPERIENCE platform, SIMULIA applications accelerate the process of evaluating the performance, reliability and safety of materials and products before committing to physical prototypes. Their global team of simulation experts provides training and services to help our customers meet their education, research and business goals.

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Software Cradle

Established in 1984 and headquartered in Osaka, Japan, Software Cradle Co., Ltd., develops and markets innovative computational fluid dynamics software for a broad range of customers. Software Cradle Co. provides customers with leading-edge technology that can open new frontiers in the design of their products.

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Tech-X Corporation

Tech-X was founded in 1994 to develop products and services for leveraging high performance computing in computational physics. Since then, Tech-X has provided services to a broad range of national and international customers from government, academia and industry.... show more Tech-X Corporation is committed to technical excellence and innovation. Its core competencies include the simulation of processes, devices and physical systems related to plasma physics, fusion and accelerator technologies, performed on computer systems ranging from desktops to leadership computing facilities.

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Arista Networks

Arista Networks was founded to deliver software-driven cloud networking solutions for large data center and computing environments. Arista’s award-winning 10/40/100 GbE switches redefine scalability, robustness, and price-performance, with over 2,700 customers and more than two million cloud networking... show more ports deployed worldwide. At the core of Arista’s platform is EOS, an advanced network operating system. Arista Networks products are available worldwide through distribution partners, systems integrators and resellers.

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Brocade networking solutions help the world's leading organizations transition smoothly to a world where applications and information reside anywhere.

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Chelsio Communications

Chelsio Communications is leading the convergence of networking, storage and clustering interconnects and I/O virtualization with its robust, high-performance and proven Unified Wire technology. Featuring a highly scalable and programmable architecture, Chelsio is shipping 10-GbE and 40-GbE Ethernet... show more and multi-port Gigabit Ethernet adapter cards, delivering the low latency and superior throughput required for high-performance computing applications.

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Cisco is the worldwide leader in IT that helps companies seize the opportunities of tomorrow by proving that amazing things can happen when you connect the previously unconnected.

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Mellanox Technologies

Mellanox Technologies is a leading supplier of end-to-end InfiniBand and Ethernet interconnect solutions and services for servers and storage. Mellanox interconnect solutions increase data center efficiency by providing the highest throughput and lowest latency, delivering data faster to applications... show more and unlocking system performance capability. Mellanox offers a choice of fast interconnect products: adapters, switches, software, cables and silicon that accelerate application runtime and maximize business results for a wide range of markets including high-performance computing, enterprise data centers, Web 2.0, cloud, storage and financial services.

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Founded in 1994 as a Caltech spin-off, Myricom is the technology leader in extreme-performance 10-Gigabit Ethernet (10GbE) solutions specialized for vertical markets. Myricom first pioneered High Performance Computing (HPC) interconnect technology that helped... show more fuel the growth of cluster computing. Now, with its fourth generation of networking products, Myri-10G, Myricom has achieved convergence between mainstream 10-Gigabit Ethernet and HPC technology, 10-Gigabit Ethernet with a supercomputing heritage. The majority of Myricom’s sales today are for 10-Gigabit Ethernet applications with demanding latency or throughput requirements. Myri-10G delivers wire-speed UDP and TCP throughput, with optional firmware-accelerated offloads for financial trading, packet capture and injection, video streaming and IPTV, HPC, and for other performance-sensitive vertical markets.

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SMC Networks

SMC Networks is a global provider of Customer Premises Equipment (CPE) to Service Providers. SMC specializes in designing, engineering, and delivering the most innovative wireless and wired products to enable cable, telecommunication and multi-service operators around the world to connect their customers to a completely integrated digital home.

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Solarflare is the leading provider of application-intelligent networking I/O software and hardware that accelerate, monitor and secure network data. With over 1,000 customers worldwide, the company's solutions are widely used in scale-out server environments... show more such as electronic trading, high performance computing, cloud, virtualization and big data. Solarflare's products are available from leading distributors and value-added resellers, as well as from Dell, HP and IBM. Solarflare is headquartered in Irvine, California, and operates R&D facilities in Cambridge, UK and New Delhi, India.

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