The ARCHER2 Service is a world-class advanced computing resource for UK researchers. For such researchers, there are specific allocation mechanisms for requesting ARCHER2 time via the ARCHER2 partner research councils EPSRC and NERC as detailed below. For researchers in other areas, please get in touch with your research council if you would like to use ARCHER2.

The ARCHER2 User Support Team are available to offer advice and assistance to any prospective users and can offer guidance as to what is the best route of access ( or further contact details can be found here. The ARCHER2 CSE Team can also provide assistance with completing a Technical Assessment (TA) and can also be contacted via the Service Desk (

Open ARCHER2 Calls

A list of any currently open calls through which you can apply for access to ARCHER2.

Call (Web Link) Closing Date TA Receipt Deadline Notes TA Form Link
Pump-priming Always open EPSRC remit only. Small amounts of time for testing and porting. Quick decision on access. Maximum of 800 CU for 6 months. Pump Priming TA Form
Pioneer Projects No open calls EPSRC remit only.
Large amounts of ARCHER2 computing resource for a maximum duration of two years.
TA Form
Access to HPC 30 April 2021 16:00 2 April 2021 16:00 * EPSRC Call Details. EPSRC remit only.
ARCHER2 or Tier-2 computing resource for a maximum duration of one year and a minimum of 4000 CU. Calls are expected to open every six months.
TA Form
TOPUP 21 May 2021 16:00 30 April 2021 16:00 HPC TOPUP Process. Application Form. EPSRC remit only. Only for users with an existing ARCHER2 allocation who require additional resource. TA Form
Access to ARCHER2 for Covid19 research Open now Further details

Technical Assessments must be submitted by the deadline - in line with UKRI guidance we are unable to accept late submissions.

ARCHER2 Access Mechanisms

There are a variety of specialised routes through which researchers can access ARCHER2. We recommend applicants familiarise themselves with these routes to ensure they apply to the most appropriate one for their project. The ARCHER2 User Support Team can offer guidance as to what is the best route of access (

ARCHER2 Specific Calls: Access to HPC and Pioneer Projects

ARCHER2 specific calls are periodically opened by the research councils. The current calls are listed in the table above. These calls are generally for computing time and storage space only and cannot fund any other expenses.

Access to HPC:

Provides an open and relatively flexible route to computational support for projects in EPSRC remit. You can access to EPSRC’s HPC systems (both ARCHER2 and most of the Tier-2 services). Projects can be up to 1 year in length. This new call combines what was previously the ARCHER RAP (Resource Allocation Panel) and the Tier-2 Open Access call. It is expected that these calls will open every six months.

Pioneer Project:

EPSRC remit researchers can apply for large amounts of ARCHER2 compute for ambitious, computationally intensive simulations and calculations in support of an individual project through EPSRC’s ARCHER2 Pioneer Projects call. Projects can be up to 2 years in length. This is the successor scheme to the ARCHER Leadership Calls.

Access through EPSRC Grants

You can include ARCHER2 on EPSRC grant applications when you are applying for funding (if you already have an active grant then you should consider applying via one of the ARCHER2 Specific Calls.

When applying for grants that include ARCHER2 resources, you should add ARCHER2 in Je-S. On Je-S, access can be requested by choosing ARCHER2 from the drop down list in the Research Council Facilities section for a standard EPSRC grant application. Please add the requested resource in CU as unit and the notional cost in £ as cost. Reasonable ARCHER2 allocations are now awarded for the duration of the grant. A completed (Technical Assessment Form) must be uploaded through Je-S, selecting the document type “Technical Assessment”.

EPSRC operate a 6-monthly allocation period policy for access on ARCHER2. The total number of CPUh (measured on ARCHER2 as the CU) awarded is broken down into 6-month periods that span the length of access to ARCHER2 that has been requested. Applicants specify the period profile on the TA form when they apply for access. EPSRC period allcoations are enforced on ARCHER2 in the following way:

Access through NERC Grants

NERC applicants should also add ARCHER2 as a facility in the standard application, contact the relevant NERC consortia leader and check the current NERC policy on access. Full details are on the NERC website. Applicants within the NERC remit wishing to access ARCHER2 via the NERC route must contact the relevant consortia leader for advice.

Access through UKRI Grants (non EPSRC and NERC)

For access through UKRI Grants, please complete a Technical Assessment Form and submit this to the ARCHER2 Service Desk to confirm that the proposal is technically suitable for ARCHER2 and the resources required to include in the grant application. Once this is completed, the ARCHER2 Service Desk will send th e completed form to EPSRC for approval.

Access through Grants with other Funding Bodies

For access through grants with other Funding Bodies, please complete a Technical Assessment Form and submit this to the ARCHER2 Service Desk to confirm that the proposal is technically suitable for ARCHER2 and the resources required to include in the grant application. Once this is completed, the ARCHER2 Service Desk will send the completed form to EPSRC in order to begin discussions with the other funding body. Please note that these discussions may take some time, and EPSRC cannot guarantee that an agreement will be reached.

Grant Top-Up

Only available for existing EPSRC grant holders with an ARCHER allocation. Provides additional resource for users who already have an allocation from an EPSRC grant, but need more to complete the objectives of their grant. Successor to the ARCHER Top-Up process.

Access through the EPSRC/NERC Scientific Consortia

If a researcher’s work is within remit of one of the Scientific Consortia, formed around research communities with substantial and continuous computational needs, then they can apply for ARCHER2 time by joining the relevant consortium. Each consortium has its own way of applying for access and allocating time. The ARCHER2 Scientific Consortia pages have more information on the remit of the individual consortia and their contact details.

Access for NERC Remit

Details for access routes for NERC Remit researchers will be available soon. Further information is provided on the NERC HPC page.


EPSRC remit researchers can request a small amount of resource awarded through a light-touch process in order to try, test and scale their code on ARCHER2. This is the successor scheme to ARCHER Instant Access. Applicants should complete the ARCHER2 Pump Priming TA form (docx) and send to the ARCHER2 Service Desk. The ARCHER2 CSE team will review the form and send to UKRI for a decision on access. We expect decisions to be made in less than 2 weeks (and usually much sooner). A maximum of 800 CU for 6 months are currently available through Pump Priming.

Driving test

A small allocation for new ARCHER2 users to get them started using the ARCHER2 Service. This scheme will be launched after the full 23 cabinet service has commenced operation and further details will be provided on the Training Driving Test page.


Guidance on access to PRACE machine for UK scientists

The UK (via EPSRC, STFC and BBSRC) are now paying around £1M a year to be members of PRACE and to get access to the PRACE machines for UK scientists. In order to maximise the amount of time obtained, and to help those thinking of applying, the following guidance has been developed by Sylvain Laizet and Debora Sijacki, who have had a lot of experience and success in applying to PRACE. Thanks to them for their help. If anyone else would like to add anything based on their experiences, please contact the ARCHER2 team

First of all, it may be obvious but it is very important to read all the information on the PRACE website. The main sources of information are the User documentation pages and the Best practice guides on the PRACE website. Make yourself aware of how to apply and what the application procedures are. You might have to apply several time before being successful. The good thing is that you will be able to use the feedback from the referees to improve your application.

You need to see a PRACE proposal in a similar way as a full RCUK proposal. Do not wait until the last minute to write your proposal. Make sure that your colleagues read it and give you valuable feedback. The scientific aspect is of crucial importance. You will need to demonstrate novelty, impact and timeliness. This is the most important part of the proposal.

Building a good team with EU partners is essential (each member of the team needs to have a specific expertise). Your experience of using HPC resources in the past and how you will manage using a Tier-0 system are also very important. It is worth emphasizing if the simulation data have a legacy value: what will be shared with the scientific community and how.

Aim for big but it is important to check how much resources are available on a given system (might be risky to ask for > 40%-50% of the system’s core hours). You must aim for simulations that can only be performed on Tier 0 Systems, not on Tier 1 Systems.

You will need to produce scalability plots and representative benchmarks. If you do not have representative benchmarks and data to justify the resource request you need to apply for a Preparatory Project (, which allows you to port your code, to test it, and to collect all the information necessary for a full proposal.

It is important to have a detailed plan of when/how the simulations will be setup/run/data copied/stored and what are the RAM/I/O/storage requirements at any given stage. Also have a detailed project management plan: who will do what in the collaboration, how data will be shared, meeting/telecon schedule, plans for paper writing, project webpage etc.

PRACE calls are advertised on the PRACE website.

Onboarding Data Migration