This page describes the policies that govern the use of the ABACUS2.0 service.

We may make reasonable changes to these policies at any given time and once we have posted those changes on our website, the new version will then apply to you.


This document describes the business model for access to the ABACUS2.0 supercomputer, DeiC National HPC Center at SDU, hosted at the SDU eScience center.

The HPC facility provides a pay-per-use service open to all, where national academic users are given priority. The final decision on awarding access to the HPC facility remains with the SDU eScience Steering Committee. The Committee allocates resources at the facility taking into consideration the requests received and according to the rules in the present document.

Requests for access to the HPC facility for private/commercial users are allocated depending on the available resources and within the limits of the service agreement with DeiC.

Access to the facility

The DeiC National HPC Center, SDU, hosts state-of-the-art solutions for academic HPC suitable for a wide range of research and technological applications. All researchers at Danish universities and all academic users can benefit from the available resources under the same conditions.

Access to the facility is not free of charge. All academic users, independently of their host institution pay the same price. This allows all researchers at Danish universities to equally take advantage of the partial public funding for the national facility at SDU.

The ABACUS2.0 supercomputer is currently one of the most power efficient HPC installation in the Nordic countries and offers one of the best pricing options for academic users in Europe, also thanks to the national funding from DeiC.

Users are billed according to how many node hours they are allocated on the ABACUS2.0 supercomputer. This means that node hours not used by the applicant, within the agreed time frame, will not be refunded.

Access to the HPC facility, the allocated resources as well as the appropriate user support are provided within the scope and the limits of the HPC Centre policies and regulations.

Three Danish universities — AAU, AU and SDU — have committed themselves to buying HPC resources for a total amount of 21M DKK. AU has committed to buy 5M DKK over 4 years (March 2015-February 2019). AAU has committed to buy 0.25M DKK resources every year over 4 years (March 2015-February 2019). The Rector of SDU has set aside 15M DKK for the period 2015-2018 to (co)finance access to computational resources on the HPC facility by SDU researchers.

Pricing model for Academic Users

The price for academic access to HPC resources is calculated based on the full cost of ownership to operate the facility. This includes:

  • the cost of the HPC hardware and the cost of the fast, parallel storage system;
  • the cost of the infrastructure needed to host the HPC facility at SDU, such as: the server rooms, the cooling system, the required electrical components to connect to the power grid (e.g. transformers), etc.;
  • the cost of the electricity for the whole HPC facility (HPC hardware, storage system, cooling system).

The costs for support personnel to the facility are not included in the above cost. Currently, this cost is very low being 1.5 FTE.

The final price for academic users is calculated to be:

  • Slim nodes: 1,50 DKK / node*hour (~ 0,062 DKK / CPU core*hour)
  • Fat nodes: 1,80 DKK / node*hour (~0,075 DKK / CPU core*hour)
  • GPU nodes: 2,10 DKK / node*hour (~0,088 DKK / CPU core*hour)

The rates above are per node per hour (node*hour) in DKK excluding VAT. All nodes on ABACUS2.0 have 24 CPU cores, i.e., the rates per CPU core are obtained by dividing node-hours prices by 24. Annually, rates are subject to change.

The prices are estimated based on the assumption of an average utilization of 80% of the machine, a life span of the HPC hardware is expected to be 4 years and 10 years for the supporting infrastructure.

The prices take into account the contribution from DeiC, which reduces the overall price for all users by about 35%.

Note that the pricing model at the national HPC facility at SDU is such that the costs for the storage are included in the cost of node-hours, i.e. users are not required to pay separately for the use of the fast storage system.

Academic users

Academic users can request computational resources in the form of two different types of allocation: Test Projects and Regular Projects. Principal Investigators of projects allocated at the HPC facility must hold at least the position of postdoc within their institution. PhD students cannot request on their own volition, but instead are required to do so in consultation with, and under the auspices of, their supervisor.

Test Projects

Test Projects are those, which only require a small amount of HPC resources. Typically, they are exploratory or preliminary in nature.

Rules for Test Projects
  • The maximum amount is 10000 node*hours on slim nodes and 2000 node*hours on fat and GPU nodes.
  • The maximum allowed period to use the compute time is 8 months.
  • Requests can be done at any time, and they will be processed as soon as possible.

Procedure to request and grant the request

1. Submit the request form through the website of the HPC facility (

The request form includes the following sections:

  • A short abstract of your Test Project, which if granted will be published on the SDU eScience Center website (maximum 250 ch);
  • Requested resources.

As part of the allocated resources, access to the HPC facility storage system will be provided. Requesters are asked to provide the storage requirements  in the request form.

2. The completed request form will then be automatically forwarded to the eScience Steering Committee for consideration.

The eScience Steering Committee will facilitate the allocation of resources to Test Projects as much as possible to allow access to new users of the HPC infrastructure.

3. If approved, you will receive an email informing you of the resources allocated to your project.

4. You will receive a separate activation email for your HPC account.

Regular Projects

Regular Projects are those, which require large amount of HPC resources, which cannot be accommodated by Test Projects. These projects are typically used by researchers or research groups with experience in HPC computing, which require continued access to HPC resources.

Rules for Regular Projects
  • This kind of allocation provides access for a period of one year.
  • Requesters are required to have a track-record of research based on the use of HPC platforms.
  • The allocation of the available resources for regular projects follows a schedule of four month periods, called “allocation periods”. The three yearly allocation periods are: 1st of March to 30th of June, 1st of July to 31st of October, 1st of November to last day of February.
  • Up to a 20% of the original allocated resources for a period will automatically be carried over to the next period, if the project has not used all available resources. Unused resources in excess of 20% of the original allocated amount will be lost.
Procedure to request and grant the request

1. Submit the request form through the website of the HPC facility (

The request form includes the following sections:

  • A short abstract of your Regular Project, which if granted will be published on the SDU eScience Center website (maximum 250 ch);
  • A description of the planned activities that require access to HPC resources and a justification of the requested resources. The planned activities must also contain a technical description of the software, which will be used to carry out the project and its adequacy in relation to the requested HPC resources (maximum 4000 ch);
  • A description of the teams’ experience in HPC environments and a listing of research publications from previous HPC allocations (maximum 3000ch);
  • How many resources (compute and storage) are needed for each of the upcoming three allocation periods.

You can submit requests continuously, but they will be gathered, evaluated and resources allocated at several cut-off dates. There are 3 cut-off dates: 1st February; 1st June; 1st October.

Requests submitted by the last cut-off and before each of these dates are reviewed together prior to the start of the next allocation period.

2. The completed request will be forwarded to the eScience Steering Committee for evaluation.

During the evaluation of the requests for access, the eScience Steering Committee can also use the advice of the HPC technical team at the SDU HPC facility in relation to the overall technical feasibility of the project.  Projects, which cannot possibly be accommodated by the HPC installation for technical reasons will be rejected.

3. In the week preceding the start of the new allocation period you will receive an email from the HPC Coordinator informing you of the resources allocated to your project.

A consequence of the limited resources available, even high-quality projects might not be allocated resources for the current allocation period, but could be allocated resources for the next allocation period for these projects, if deemed appropriate by the requester, so as to ensure access without the need to resubmit a request.

4. You will receive a separate activation email for your HPC account.

Access for non-academic Users

Non-academic users, such as private companies, can also request access to the DeiC National HPC Center at SDU.

Non-academic users request access to the HPC facility can be obtained by writing to

The price for non-academic users does not include the co-funding from DeiC and are aligned with current market prices.

Individual prices are agreed with non-academic users, based on their needs and the level of support that they require.

In addition, access for non-academic users is regulated by the service provider agreement with DeiC, which limits the amount of resources which can be allocated to non-academic users.

The DeiC National HPC Center at SDU will provide access at any requested time to the infrastructure and provide the requested resources as well as the appropriate user support within the scope and the limits of the HPC Center policies and regulations.

The SDU eScience Center uses a standard Collaborative Agreement that contains terms and conditions that governs non-academic users´access to and the use of the service offerings.

Personal data, GDPR

DeiC National HPC Center, SDU needs to collect and store certain personal data about you in order to provide high performance computing services to you.

For example, DeiC National HPC Center, SDU uses your personal data to provide you with information that you request from us, information that DeiC National HPC Center, SDU considers may be of interest to you or information that you should take part in in order to utilize our services.

This personal data includes:

  • Information provided by the project leader in project applications, including project membership information
  • Job accounting and operating system logs

Data shared externally

DeiC National HPC Centre, SDU does not sell or otherwise pass your personal information on to any third parties except as noted below.

Copies of published papers acknowledging the DeiC national HPC Center, SDU will be included on the website, but only if there are no restrictions on publication.

Data shared with SDU, DeiC, AU and AAU

DeiC National HPC Centre, SDU shares data with DeiC and internally with other parts of SDU, as well as with AU and AAU in regard to projects from those universities.

Data shared with other DeiC National HPC Centre, SDU users

Users of the DeiC National HPC Centre, SDU can see some personal data of other users of the system; in particular their name and organization. Moreover, within a project, users can see other users’ email addresses.

Checking and correcting your information

On the ABACUS2.0 admin home page you can review all the personal data that DeiC National HPC Center, SDU has on you in our electronic register. If your personal data needs to be updated, please contact us.

Revision of the personal information policy

DeiC National HPC Center SDU may at any time revise the personal information policy. However, if significant terms are revised, then the changes between revisions will be documented in this personal information policy document.

Contacting DeiC National HPC Center, SDU

Questions, comments and requests regarding this personal information policy are welcomed. Please do not hesitate to contact us.

Job scheduling on our HPC system is done using Slurm. Slurm (Simple Linux Utility for Resource Management) is a free and open-source job scheduler used by many of the world’s supercomputers and computer clusters. The queue system is configured with three distinct partitions, corresponding to the three different types of nodes available:

  • slim
  • fat
  • gpu

The priority on the queue is based on the waiting time of jobs and a fairshare based on allocated resources. This ensures that we both prioritise  jobs that are run in the order they are added to the queue (FIFO) while also ensuring that no user group can occupy an entire node partition for longer periods of time (fairshare).

Each month the fairshare is updated such that unused node hours in previous months do not count in the new month, i.e., even if a group does not use any node hours for two months, they only get a fairshare in the third month corresponding to the fraction of their time allocated in that month.

Jobs are backfilled, i.e., small jobs which can be fitted in earlier in the schedule without delaying later large jobs, are allowed to run.

To guarantee a fair turnaround of jobs and projects and to enable more effective use of HPC resources the wall-time of jobs is limited to a maximum of 24 hours.

General availability

Every reasonable effort will be made to keep ABACUS2.0 available and operational 24 hours per day and 7 days per week.

Please note, however, that although the support personnel will do their best to keep the HPC facility running at all times, we cannot guarantee to promptly resolve problems outside Danish office hours (9:00-15:00), and during weekends and public Danish holidays. Nevertheless, please notify support about issues whenever they arise.

The service is provided “as is” and we cannot guarantee 100% perfection. In legal terms, this means that we are excluding all warranties and conditions applying to the service, including those implied by law. We are not liable if things go wrong and you suffer damage as a result, although if our negligence results in anyone’s death or personal injury we do not limit or exclude our liability for that.

The backup policies we will follow are good and secure and will cover most conceivable eventualities, but it is impossible to be 100% certain. Our recommendation is that in using the service you should take the usual precautions you would take with any computer system: keep copies of essential data and codes, copy your most important results away on your home machine, and so on. Almost certainly, all this will be unnecessary, but it is always a good precautional measure to take.

Planned maintenance

Occasionally, it is necessary as part of maintaining a reliable service to update system software and replace faulty hardware. Sometimes, it will be possible to perform these tasks transparently by means of queue reconfiguration in a way that will not disrupt running jobs or interactive use or significantly inconvenience users. Some tasks, however, particularly those affecting storage or login nodes, may require temporary interruption of service.

Where possible, maintenance activities involving a level of disruption to service will be scheduled on:

Wednesdays 8:00 to 18:00 (local Danish time).

Please note that this does not mean that there will be disruption at this time every week, merely that if potentially disruptive maintenance is necessary we will do our best to ensure it takes place during this time period, in which case, there will be an advance notification.

Establishing a predictable time slot for planned maintenance has the advantage that users may be confident that “dangerous” changes will not intentionally be undertaken at other times. Unfortunately, the potential for unplanned periods of disruption is a fact of life – please see the next section.

Exceptional maintenance and unplanned disruptions

It may occur that despite best efforts, it becomes necessary to reduce or withdraw service at short notice and/or outside the planned maintenance time slot. This may happen e.g. for environmental reasons, such as air conditioning or power failure or in an emergency, where immediate shutdown is required to save equipment or data. Obviously, in such cases, service will be restored as rapidly as possible.

Limitations of service

  • The user account is time limited and may be terminated if the user’s current affiliation is ended.
  • Service is provided on a best effort basis. Although DeiC National HPC Center, SDU staff takes professional pride in maintaining a high level of service, no guarantees are made for system uptime or data integrity.

Usage rules

  • The user account is personal and shall not be shared with other persons.
  • The user account shall not be used for other purposes than those for which resource allocation has been granted.
  • Permanent passwords and private keys shall be kept secret and shall not be transmitted over insecure channels.
  • The user shall not engage in sabotage or other damaging or disruptive activities against DeiC National HPC Center, SDU facilities or other users, nor attempt to gain unauthorized access to DeiC National HPC Center, SDU systems. This includes, but is not limited to, circumventing accounting mechanisms to use more resources than has been allocated.
  • Any indications of security problems, signs of intrusion or suspicious activity from other users shall immediately be reported to DeiC National HPC Center, SDU staff.


  • Breach of these rules may result in account termination and/or legal prosecution.

Additional rules

  • The user must inform DeiC National HPC Center, SDU of any changes in an e-mail, etc.
  • The user agrees to acknowledge the use of the DeiC National HPC Center, SDU resources in any article or scientific publication resulting from or utilizing the project calculations and to submit a copy on demand to DeiC National HPC Center, SDU.
  • The user must deregister with DeiC National HPC Center, SDU when access to DeiC National HPC Center, SDU resources is no longer needed.

The University of Southern Denmark (SDU) has the followings terms of sale:

As a rule you have to pay an invoice from SDU 30 days after the date registered on the invoice, at the latest.

SDU send invoices to customers in foreign countries by e-mail or printed by mail.

Invoices have to be paid to SDU’s bank account, which is the following:

Danske Bank
Albani Torv 2-3
5000 Odense C, Denmark
IBAN: DK51 3000 0007 4166 60

The University of Southern Denmark has VAT-number DK29283958.