Requesting resource hours at IDRIS

Requesting resource hours for IDRIS machines is done via the DARI site which is common to the three national computing centres, CINES, IDRIS and TGCC:

The modality of attribution of calculation hours at the national computing centres changed in 2017 in order to equilibrate the allocation sessions and separate them from the civil year. Because 2017 is a transition year for this new modality, only one call for projects has been organised which will simultaneously attribute:

  • The A3 hours allocation, accessible to projects having submitted a request for the A1 allocation (or before), and to new projects: These allocated hours are usable during one year, from 1 November 2017 to 31 October 2018.
  • A2 complementary hours allocation of 6 months (IDRIS and CINES only): These allocated hours will be usable from 1 January 2017 to 30 April 2018.

You may submit a request for one of these two allocations, in function of the machines being applied for and your schedule, on the DARI site (

Submission of allocation requests dates: Tuesday, 6 June 2017 to Tuesday, 5 September 2017

For more information: note de cadrage

During the course of the year, you still have the possibility of requesting:

  • Supplementary resources (demandes au fil de l'eau) for existing projects which have used up their quota of hours during the year.
  • Preparatory access (accès préparatoire) for projects which do not yet have an existing account at IDRIS, or those which have an account on only one of the computing machines (Turing or Ada) and would like preparatory access on the other machine.
    After a request for preparatory access is approved, the resources accorded are 50 000 hours on Turing and 15 000 hours on Ada. Access is granted for a period of 6 months beginning at the project account(s) opening.

All the necessary information for making these requests is found on the DARI site help page: (in French).