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Jetstream allocations are awarded exclusively through the eXtreme Science and Engineering Discovery Environment (XSEDE). XSEDE provides XSEDE User Portal (XUP) accounts free of charge. XSEDE allocations require that the Principal Investigator (PI) be a US-based researcher. 

A guide with more detail on Jetstream allocations is available online at Samples of successful requests are available here, .

Create an XSEDE portal account
  1. Go to
  2. Click "Create Account" on the left side of your screen. 
  3. Fill out the form and click Submit. 
  4. Upon receipt of the email notification click the link in the email to verify your account and set your username and password. If the link doesn't work, go to, click "Sign In" and then select "Verify Account" under the "Other Sign In Options".
  5. Following account verification, if not already logged in, go to, click "Sign In" and sign in with the username and password set in the verification step.
  6. You will be asked to read and accept the User Responsibilities form. This form outlines acceptable use to protect shared resources and intellectual property.
Apply for an XSEDE allocation
  1. Read the Allocations Overview. There are sample allocation requests in the overview that you may find helpful.
  2. Go to On the Available Opportunities page, click "Start a New Submission" under "Startup". If you are not familiar with the process, select "Begin Guided Submission" for step-by-step instructions.
  3. Before submitting an allocation request have the following information available:
    • PI, Co-PIs, and Allocation Managers (username)
    • Add additional users that will be able to use your allocation time and resources (optional)
    • Title
    • Abstract (typically a paragraph or two for a Startup request will suffice)
    • Keywords
    • Field of science (secondary areas of science may be also be added)
    • Resources
      • Select "Jetstream IU/TACC" from the list.
      • A startup allocation is typically 50,000 SUs for Jetstream.
      • Fill in number of Virtual Machines needed (this is an estimate for planning purposes – there's no wrong answer – try to best guess at how many instances you'll run at one time)
      • Fill in number of public IP addresses needed (same as above)
      • Select "Jetstream Storage". For Startup allocations, the block storage provided will be limited. A list of the various VM sizes and the RAM and storage associated is here Virtual Machine Sizes and Configurations. If additional storage for your VM is not needed, enter 1 in the Amount Requested box. Note: The maximum allowed is 500GB. A justification will be needed in the comments for any significant storage request in the Comments box.
    • Supporting documents - PDF format required
      • PI CV (2 page limit)
      • CoPI CV required for every CoPI added to request (2 page limit)
    • Supporting Grants (Optional)
    • Publications of previous/supporting work (optional)

4. Submit allocation request. At this point, all entered information is validated, errors or omissions are flagged.

Allow 1-2 business days for your application to go through the approval process.

Detailed information about the allocation request process, with screenshots, is here,

XSEDE also offers Rapid Access Trial Allocations to Jetstream. Rapid Access Allocations are designed to give potential users rapid, but limited access to Jetstream in order to try the features of cloud-computing.

NEW - Getting a Research Allocation

There is a new Cornell Virtual Workshop (CVW) on getting a Research Allocation for Jetstream here:

Adding users to an existing XSEDE allocations

To add users to, or remove them from, an active Extreme Science and Engineering Discovery Environment (XSEDE) allocation, the principal investigator, co-principal investigator, or allocation manager can follow the instructions here:

How often can I get a startup allocation?

Applications for startup allocations will only be accepted once. After the startup runs out it is best to apply for a research allocation.

How do I request additional SUs?

If you already have an XSEDE allocation and need to request additional service units (SUs) the PI or co-PI may submit a request via the XSEDE User Portal. For instructions on how to submit the request, see How do I request supplemental service units for an XSEDE allocation?

How do I request additional resources such as CPUs and memory?

Additional CPUs and memory may be requested via Atmosphere.  See How to request additional resources on Jetstream.

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