Time on Rivanna is allocated to researcher projects as Service Units (SUs). One SU corresponds to one core-hour of usage of the machine. Allocations are managed through MyGroups accounts. The group owner is the Principal Investigator (PI) of the allocation. All eligible PIs can freely obtain standard allocations, and can apply for larger grants through an administrative unit. Time units can also be purchased. Allocation grants are for a limited time period and may be renewed. Purchased time does not expire. SUs are deducted from allocations by multiplying the number of cores requested and the number of wallclock hours actually used, along with any scaling factor that might have been approved for the queue.

Eligibility and Account Creation

University of Virginia tenure stream and academic general faculty, research faculty, research scientists, and postdoctoral associates may request any type of allocation. The different types of allocations are explained below. UVA graduate and undergraduate students are not permitted to request allocations—this must be done by their faculty advisor[s]. UVA staff may request allocations, but are required to provide a detailed project proposal with each request.

ARCS staff will create a MyGroups account for the faculty or postdoc Principal Investigator (PI) once he/she has submitted an allocation request and will then turn over control of the MyGroups account to the PI. The PI may designate one or more group administrators but must remain a member of the group. Collaborators with UVA Eservices accounts, regardless of status, can be added to the MyGroups group once it has been created. MyGroups group names should consist of lowercase letters, digits, or underscores only and must begin with a letter. Please do not use spaces in the group name.

Each PI is ultimately responsible for managing the roster of users in his/her group although PIs may delegate day-to-day management to one or more other members. When users are added or deleted, accounts are automatically created. PIs who must keep projects separated, such as to distinguish those funded externally from those granted internally, may have more than one allocation group. 

Allocation Types

    Standard allocations: Standard allocations are for 100,000 SUs and require a brief summary of the research project along with an explanation of the computations to be performed. Standard allocations can be renewed (up to three times per year) as long as each renewal request includes a synopsis of results from the original allocation. Available to: Faculty and post-docs using Rivanna for research.

    Administrative allocations: Administrative allocations are granted by the research deans who provide funding for Rivanna. A minimum one-page proposal must be included with any type of administrative allocation request. Available to: Faculty and postdocs who require very large allocations. Choose one of the following administrative request options based on your school/college/organizational affiliation:

    Allocation purchases: Time on Rivanna can also be purchased using a PTAO. Purchasers are given a higher priority in the queue and their SUs never expire. Available to: Faculty and postdocs with grants; researchers who need priority access and premium service.

    Instructional allocations: Instructional allocations provide limited access to Rivanna and are available to UVA instructors who are teaching a class or leading a training session. Faculty who wish to request an instructional allocation should choose a MyGroups account name using the class rubric, e.g. cs5014.