PRACE Preparatory Access

Information on the Call for Proposals for PRACE Preparatory Access.

The objective of PRACE Preparatory Access is to allow PRACE users to optimise, scale and test codes on PRACE Tier-0 systems before applying to PRACE calls for Project Access. Production runs are not allowed as part of PRACE Preparatory Access.Currently, PRACE offers the following schemes for Preparatory Access:

  • Type A: this scheme is intended to produce scalability plots of the performance of the codes on PRACE HPC systems, as well as other parameters that may be relevant to apply for PRACE calls for Project Access. The maximum duration of Type A projects is 2 months. Apply here.
  • Type B: the objective of this scheme is to undertake code development and optimisation. Applicants will need to describe the proposed work plan in detail, including the human resources and expertise available to implement the project. The maximum duration of Type B projects is 6 months. Apply here.
  • Type C: in this scheme, PRACE experts are requested to provide the necessary support to undertake adaptations (development and optimisation) to the codes of PRACE users. The maximum support that can be requested is the equivalent to 6 person-months of effort. The maximum duration of Type C projects is 6 months. Apply here.

The Call for Proposals for PRACE Preparatory Access Type A and Type B schemes is a continuously open call, with a maximum time-to-resources-access (start-date) of two weeks after the date of submission.

Requests for Type C scheme are evaluated and granted on a quarterly schedule, with cut-offs for evaluations to be set at 11:00 AM CEST / CET of the first working day of March, June, September and December. Awarded proposals for Type C will have a maximum time-to-resources-access (start date) of two months after the relevant cut-off date.

The next cut-off date for Preparatory Access Type C proposals:

  • 1st March 2017 (11:00 CET) – 28th cut-off date

The following table shows PRACE HPC Tier-0 systems and their current availability for Preparatory Access:

Tier-0 systemArchitectureType AType BType C
Curie, hosted by GENCI at CEA
Bull Bullx Cluster
Hazel Hen, hosted by GCS at HLRS
Cray XC40
JUQUEEN, hosted by GCS at JSC
IBM BlueGene/Q
Marconi, hosted by CINECA
Lenovo NextScale
MareNostrum, hosted by BSC
IBM System X iDataplex
Piz Daint, hosted by CSCS
Cray XC30 System
SuperMUC, hosted by GCS at LRZ
IBM System X iDataplex


The indicative schedule of the PRACE Calls for Proposals for Preparatory Access is as follows:

actionTypes A & BType C
Proposal submissionContinuously openQuarterly cut off dates

1st working day of the quarter

(March; July; September; December)

Administrative validationworking days after submission2 working days after the cut-off date
Review of proposals & decisionUp to 2 weeks after submissionUp to 2 months after submission
Access start dateUp to 2-3 weeks after submissionAccess is provided starting approx. 45-60 calendar days after the cut-off date.
Please note that access of the December cut-off date may be slightly delayed due to Christmas break

The process to access resources after the communication of the decision on allocation is two-fold:

  • Awardees are asked to confirm their availability and readiness to use the awarded resources during the stated period of time
  • Access is provided after receipt of a positive reply

The allocation decision, including the type of access, start/end dates, duration and the resources awarded is not open for negotiation.

As detailed in the Terms of Reference of the Call for Proposals for Preparatory Access, “the award of Preparatory Access proposals of Types A, B and C is limited by the amount of resources available. For type C, there are also limitations regarding the availability of the support from experts (in terms of staff hours) and the type of expertise required.”

In case of oversubscription of a particular resource, resources will be awarded on a first-come, first-served basis to suitable proposals based on the submission date until the resources are exhausted.

Please read the Terms of Reference here.

Subscribe to receive PRACE Call Announcements

Legal Notice and Data Protection Policy
Share: Share on LinkedInTweet about this on TwitterShare on FacebookShare on Google+Email this to someone