Jetstream Allocations

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, .

You'll need to have an XSEDE Portal account to apply for an allocation. If you already have an XSEDE Portal account, skip to the box titled "Apply for an XSEDE allocation". 

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" if you need additional storage beyond the VM's disk. 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. By default, all Atmosphere users get 100gb of volume space in addition to any VM root disks, so if that's enough, you need not request Jetstream Storage and do not need to select it. Note: The maximum allowed is 1000GB. 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,

Trial Allocations

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


Problem / Issue / QuestionSolution
1Is there an overview of the types of allocations available as well as any restrictions those allocations have?
2Is there a example or demonstration of how to get an allocation that I could follow?There is a Cornell Virtual Workshop (CVW) on getting a Research Allocation for Jetstream here:
3How do I let other XSEDE accounts use my allocation?

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:

Please note that it can take up to four hours for users added to an allocation to become active. 

4How 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.

I'm running out of Service Units (SUs) or storage.

How do I request more?

If you already have an XSEDE allocation and need to request additional service units (SUs), the PI, co-PI, or delegate may submit a request via the XSEDE User Portal. For instructions on how to submit the request, see Requesting additional SUs or storage for Jetstream -- Supplemental Allocations

I am at or exceeding the quota limits for my 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.