The Advanced Cyberinfrastructure Coordination Ecosystem: Services & Support (ACCESS) is an initiative by the National Science Foundation (NSF) designed to enhance computational and data-intensive research across all scientific disciplines.

ACCESS Resources

ACCESS resource providers offer a wide range of cyberinfrastructure assets and specialized support. Some of the many resources in the ACCESS portfolio include:

Compute resources – High-performance computing clusters (GPU and CPU based) accessed by logging in to front-end nodes. Researchers can install their application software and run batch computing jobs under a scheduler on these resources. Storage resources – Data storage systems for storing and managing large amounts of data. Cloud resources – Cloud infrastructure where researchers can launch and run virtual machines. Specialized support – Tools to streamline your research: science gateways, hosted workflow, remote access web portal, and more.

  • Allocations: Explore how to request computational resources.
  • Support: Find assistance and helpdesk services.
  • Operations: Understand the operational aspects of ACCESS resources.
  • Metrics: View performance and usage metrics of ACCESS projects.

Getting Started with ACCESS

  • Home: Discover more about ACCESS and its offerings.
  • Search Knowledge Base: Find detailed articles and guides.
  • Login: Access your ACCOUNT to manage allocations and resources.


ACCESS, funded by the NSF, offers a broad spectrum of advanced computing systems and services at no cost, aiming to democratize access to computational resources. It stands on the foundation laid by the XSEDE project, expanding the ecosystem with innovative capabilities and broader participation.

What ACCESS Provides

  • Systems and Services: From supercomputers to specialized compute clusters with diverse capabilities.
  • Data and Storage Services: Secure and scalable solutions for research data.
  • Expertise and Support: Assistance to utilize resources effectively and achieve research goals.
  • Scientific Applications and Gateways: Specialized software and interfaces to streamline research workflows.
  • Education and Training: Workshops, courses, and resources for skill development.


U.S. researchers, educators, students, and international collaborators are eligible to use ACCESS resources, adhering to NSF and ACCESS policies. Commercial organizations may also qualify under specific policies.

Do You Need to Be an Expert?

No. ACCESS provides support to accommodate various levels of computing needs, from basic to advanced requirements.

Examples of ACCESS Usage

  • Scaling applications beyond personal computing limits.
  • Learning best practices in scientific software development.
  • Accessing GPUs for machine learning in diverse research fields.
  • Engaging in code optimization and high-performance computing classes.

Project Types

There are four different project types to choose from: Explore, Discover, Accelerate, and Maximize. And if you’re not sure, you can always start with an Explore project and upgrade as you learn more about your resource needs. Even if you know you’ll eventually need a Maximize project, you can begin with a smaller project so you can get started while you wait for the next semi-annual round of Maximize proposals to be reviewed. The table below compares the key features of each of the different project types.

  • EXPLORE: Great for resource evaluation, graduate student projects, small classes and training events, benchmarking, code development and porting, and similar small-scale uses.
  • DISCOVER: Designed for research grants with modest resource needs, Campus Champions, large classes and training events, NSF graduate fellowships, benchmarking and code testing at scale, and gateway development.
  • ACCELERATE: Best for experienced users with mid-scale resource needs, consolidating multi-grant programs, collaborative projects, preparing for Maximize ACCESS requests, and gateways with growing communities.
  • MAXIMIZE: The choice for large-scale research activities that need more resources than the limit for Accelerate ACCESS projects.


ACCESS resources and services are generally free for academic and research purposes, with certain exceptions for commercial use.

Limits and Allocation Requests

Before running large computations, users must submit allocation requests to detail their computational needs.

How to Acknowledge ACCESS

When including ACCESS in funding proposals or research materials, specific language is provided to ensure proper acknowledgment of the resources utilized.

Ready to Start?

Visit the Get Started page for a guide on accessing and using ACCESS resources effectively.

ACCESS is supported by several NSF awards, reflecting the commitment to advancing U.S. research capabilities through enhanced cyberinfrastructure.