NorduGrid ARC v0.4 Release Announcement

April 13, 2004

After two years of development and testing, the NorduGrid collaboration is pleased to announce release 0.4 of its Grid middleware (also known as the Advanced Resource Connector), the first official release of this software.

Since the first development release (May 2002) the middleware has been deployed and used in production environments in many countries. Emphasis has been put on scalability, stability, reliability and performance of the middleware.


The NorduGrid middleware (or the Advanced Resource Connector, ARC) is an open source software solution enabling production quality computational and data grids. The middleware integrates computing resources (commodity computing clusters managed by a batch system or standalone workstations) and Storage Elements, making them available via a common secure grid layer. The middleware builds upon standard open source solutions like the OpenLDAP, OpenSSL, SASL and Globus Toolkit 2 (GT2) libraries.


ARC provides a reliable implementation of fundamental grid services, such as information services, resource discovery and monitoring, job submission and management, brokering, data management and resource management. Most of these services are provided through the security layer of GSI. NorduGrid provides innovative solutions essential for a production quality middleware: the Grid Manager, gridftpd (the ARC/NorduGrid GridFTP server), the information model and providers (NorduGrid schema), the User Interface and broker (a local broker integrated into the user interface), the extended Resource Specification Language (xRSL) and the monitoring system.

ARC main components are:

System requirements


The middleware is free to be deployed anywhere by anybody. Pre-built binary releases for a dozen of Linux platforms can be downloaded from

The software is released under the GNU General Public License (GPL).

The NorduGrid repository hosts the source code, and provides all the required external software which are not part of a standard Linux distribution.

Installation notes

NorduGrid ARC middleware has two main components: the server and the client part. Server is typically installed on a computing resource by a system administrator, while the client can be set up anywhere and needs no system administrator privileges. Detailed installation instructions are distributed with the middleware documentation and are available at the Web site:

Known issues


User support and site installation assistance is provided via the request tracking system available at . In addition, NorduGrid runs a couple of mailing lists, among which the nordugrid-discuss mailing list is a general forum for all kind of issues related to the NorduGrid ARC middleware.

NorduGrid deploys the Bugzilla problem tracking system. Feature and enhancement requests, as well as problems, should be reported there.

Contact information is kept updated on the web site.


The NorduGrid ARC developers would like to thank: