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CIG administers a modest allocation on ACCESS (formerly XSEDE) resources to help CIG researchers perform small scale research tests and benchmarks, with the aim of obtaining their own ACCESS allocation.

Current allocation SUs:  

  • Stampede2 (Skylake):  6,978 out of 7,500k Node Hours remaining as of 12 January 2024
  • Stampede3 (Sapphire Rapids): 176,285 out of 176,285 Node Hours remaining as of 12 January 2024
  • Ranch: 10,000 GB
  • Expanse (AMD EPYC 7742): 4.718k out of 205,000 core-hours as of 12 January 2024
  • Expanse Storage: 2,048 GB

Allocation expires 30 September 2024

  • Stampede3: 176,285.0 Node Hours
  • Stampede2: 7,500 Node Hours
  • Ranch: 10,000.0 GB
  • Expanse: 205,000.0 Core-hours
  • Expanse storage: 2,048.0 GB

From 1 October 2023 to 30 September 2024 (Maximize)

We remind all users that this allocation is for community use for use in benchmarking and small runs in preparation of your own allocation request.  Please contact staff before submitting runs to ensure enough SUs are available.

Apply for an Account    

If you are a U.S. researcher and you wish to use CIG's ACCESS allocation, apply for an account:

  1. Go to
  2. Create an account by selecting one of two options: Register using an existing identity or register without an existing identity
  3. After your account has been confirmed as active, apply to use the CIG allocation by submitting a ticket with the following information:
    1. Full Name:
    2. email address:
    3. U.S. University/Organization:
    4. Primary Discipline:
    5. Status:
      If Status is graduate student, please name your faculty advisor:
    6. XSEDE user name:
    7. Project description:
    8. Expected number of runs:
    9. Hours per run:
    10. Number of cores per run:
    11. Anticipated period of usage (start and end date):

All information is mandatory.


Allocation Policy

Please check back for account policy and usage guidelines.

Apply for Your Own Allocation

We recommend you start by applying for an Explore on ACCESS. ACCESS accepts requests for Explore, Discover, and Accelerate tiers at any time.  Maximize ACCESS requests are accepted, reviewed, and awarded semi-annually. 

Help is available for proposal development through our ticketing system.



Papers, presentations, and other publications that feature work that relied on XSEDE resources (activities prior to September 1, 2022), services or expertise should cite the following publication:

John Towns, Timothy Cockerill, Maytal Dahan, Ian Foster, Kelly Gaither, Andrew Grimshaw, Victor Hazlewood, Scott Lathrop, Dave Lifka, Gregory D. Peterson, Ralph Roskies, J. Ray Scott, Nancy Wilkins-Diehr, "XSEDE: Accelerating Scientific Discovery", Computing in Science & Engineering, vol.16, no. 5, pp. 62-74, Sept.-Oct. 2014, doi:10.1109/MCSE.2014.80


User’s should consult individual software manuals for licensing and acknowledgement information.

In addition, CIG and XSEDE (activities prior to September 1, 2022) should be acknowledged as follows:

[Insert software name] is hosted by the Computational Infrastructure for Geodynamics (CIG) which is support by the National Science Foundation award NSF-949446 and 1550901. This work used the Extreme Science and Engineering Discovery Environment (XSEDE), which is supported by National Science Foundation grant number ACI-1548562. Access  was through the CIG Science Gateway and Community Codes for the Geodynamics Community MCA08X011 allocation.

If you performed the majority of your work on ecosystem resources after September 1, 2022, you should acknowledge the ACCESS program and the specific resources that you used.

[Insert software name] is hosted by the Computational Infrastructure for Geodynamics (CIG) which is support by the National Science Foundation award NSF-949446, 1550901 and 2149126. This work used [resource-name] at [resource provider] through the CIG Science Gateway and Community Codes for the Geodynamics Community allocation MCA08X011 from the Advanced Cyberinfrastructure Coordination Ecosystem: Services & Support (ACCESS) program, which is supported by National Science Foundation grants #2138259, #2138286, #2138307, #2137603, and #2138296.

For more information on citing ACCESS or XSEDE resources, see:


Please submit references to all publications resulting from the usage of CIG software and XSEDE allocation.