Release Notes for NorduGrid ARC 6.4.0

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November 15, 2019

We are happy to announce the ARC 6.4.0 release. This release includes the reimplementation of the ARC-CE accounting subsystem, we now also support Centos 8, and a few nice bugfixes have been made.

Highlights in this release

The ARC-CE accounting subsystem has been reimplemented. The central point of the next generation Accounting Subsystem is a local SQLite accounting database that stores all the A-Rex Accounting Record (AAR) information. AAR defines all accounting information stored about a single ARC CE job.

The new system improves scalability, eliminates bottlenecks of the legacy architecture and provides much more information about the ARC CE jobs on site. The publishing and republishing of the records also have been improved, in particular APEL has received support for summary and sync messages.

The switch to the new accounting is fully transparent except for one change in the benchmark values in the ARC configuration, see below. The documentation for the new accounting can be found here.

Some important accounting details:

The following Bugzilla tickets have been resolved

If you are using the RequestedTotalWallTime in the job.jobid.xml file notice that the value has now changed with the resolution of Bugzilla ticket 3860. According to Glue2 schema the RequestedTotalWallTime = RequestedWallTime * Number-of-cores, however the number was up until now wrongly reported without multiplication of number of cores.


The ARC 6 documentation has been rewritten in a modern format and is placed at this location.

If you miss something or have questions, please contact us!

Installing ARC 6

We recommend to install ARC release using the Nordugrid repository.

Note that if you instead install from EPEL for RHEL7 compatible systems, the ARC 6 packages can be found as nordugrid-arc6-* and not nordugrid-arc-*. This was needed in order to supply both ARC 5 already available for RHEL7 and the new ARC 6.

We provide binary builds for all supported versions of:

In addition we build nightly packages for older platforms.

Future Support of ARC 5-series

Note that now that ARC 6 is released, we will only provide security updates of ARC 5.

In particular:

  1. No new feature development is planned or going on for ARC5 and no bug-fixing development will happen on ARC5 code base in the future except for security issues.
  2. Security fixes for ARC5 will be provided till end of June 2020.
  3. Production Sites already running ARC 5 will be able to get deployment and configuration troubleshooting help via GGUS till end June 2021. This we call "operational site support".
  4. ARC5 is available in EPEL7 and will stay there. EPEL8 will only contain ARC 6.

Getting in Touch

If you need help with the configuration file or have any other questions related to ARC 6, please contact us via

Previous releases

Details of previous releases can be found at the ARC Releases page

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