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Flexible, scientific infrastructure for research on the future of cloud computing. Researchers use CloudLab to build their own clouds, experimenting with new architectures that will form the basis for the next generation of computing platforms.

Recent News

October 8, 2021
A user has posted a helpful guide to using our programmable Bluefield-2 NICs.
May 5, 2021
180 new nodes with a mix of 25 Gb, 100 Gb, and NVMe are now available at Utah.
February 20, 2021
Web-based terminal for shells and consoles upgraded
December 20, 2020
Connectivity to affiliated facilities (Emulab and Powder upgraded to 200 Gbps
July 22, 2020
Fifteen new AMD nodes with two GPUs each are now available at Clemson.
Cluster Status
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Build Your Own Cloud …

CloudLab provides researchers with control and visibility all the way down to the bare metal. Provisioning an entire cloud inside of CloudLab takes only minutes. Most CloudLab resources provide hard isolation from other users, so it can support hundreds of simultaneous "slices", with each getting an artifact-free environment suitable for scientific experimentation with new cloud architectures. Run standard cloud software stacks such as OpenStack and Hadoop. Or, build your own from the ground up. The bare metal's the limit!

CloudLab is built from the software technologies that make up Emulab and parts of GENI, so it provides a familiar, consistent interface for researchers.

  Learn about the technology

… On Our Hardware

The CloudLab clusters have almost 15,000 cores distributed across three sites around the United States: Utah, Wisconsin, and South Carolina. Each cluster has a different focus: storage and networking (using hardware from Cisco, Seagate, and HP), high-memory computing (Dell), and energy-efficient computing (HP). CloudLab is interconnected with nationwide and international infrastructure from Internet2, so it is possible to extend private, software-defined networks right to every server.

CloudLab interoperates with existing testbeds including GENI and Emulab, so you can take advantage of hardware at dozens of sites around the world.

  Take a look at the hardware

What Does it Mean to Build a Cloud on CloudLab?

When you build a cloud on CloudLab, you get a slice of the facility. In that slice, you have full control. This means you can run a full suite of cloud software of your own—compute, networking, and storage. That suite might look like one of today's cloud software stacks (for example, maybe it's an instance of OpenStack), it might be an incremental improvement to today's stacks (for example, replacing the storage layer), or it might be something radically different, built from the ground-up to support features like real-time computing, integration with cyber-physical systems, high performance computing, or energy awareness. Your cloud might be only for your own use as you experiment with your new architecture, or you could open it up to other users to get real application workloads.

CloudLab is built around profiles. A profile is a description of everything needed to build a cloud: the physical hardware (servers, disks, switches) and the software needed to transform it into a particular type of cloud. A profile is fully packaged and automated: building a cloud from scratch may take only minutes, depending on its size and complexity. CloudLab will provide "stock" profiles for several popular cloud software stacks, but users can modify these or build their own from scratch.

Is CloudLab Right For Me?

CloudLab is a testbed designed to allow researchers to experiment with cloud architectures and the new applications that they enable. It is built for running experiments that will lead to new capabilities in future clouds, or to a deeper understanding of the fundamentals of cloud computing. This means that it is ideally suited to experiments that cannot be run in traditional clouds because they require control and/or visibility over parts of the system that would be “givens” in other clouds, such as the virtualization, storage, or network layers. See our AUP for more details.

Availability and Schedule

CloudLab is available, without charge, to all US academic researchers and educators. Anyone with an account on Emulab or GENI can use CloudLab with their existing account.

The CloudLab Team

CloudLab is a project of the University of Utah, Clemson University, the University of Wisconsin Madison, the University of Massachusetts Amherst, Raytheon BBN Technologies, and US Ignite.

We've built widely-used testbeds for the computer science research community for decades, including Emulab, parts of GENI, and Apt. We're also heavily involved in reaching out to the community of computational research through the ACI-REF initiative, next-generation applications with transformative public benefit through US-IGNITE, and through a partnership with HTCondor, CloudLab users will be able to "Opt-in" to compute jobs as real workloads if they wish.

To design and build the CloudLab facility, we're partnering with three vendors: Cisco, Dell, and HP. Seagate has also provided a generous donation of hard drives.

CloudLab is part of the National Science Foundation's NSFCloud program.

CloudLab Leadership

Contact Us


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We recommend that users of CloudLab join the cloudlab-users mailing list. The list has a searchable archive, and is a good place to direct questions that are of general interest to CloudLab's user community. For questions that are not of general-interest, such as questions about individual accounts or experiments, send mail to

General inquiries or comments about CloudLab (not support-related) can be directed to

Acceptable Use Policy (AUP)

The Acceptable Use Policy for CloudLab can be found here.