Data distribution platform runs on Integrity RTOS

Real-Time Innovations and Green Hills Software have developed a standards-based data distribution platform for embedded applications demanding total reliability and absolute security.

Real-Time Innovations and Green Hills Software have developed a standards-based data distribution platform for embedded applications demanding total reliability and absolute security required by programmes such as the Joint Strike Fighter (JSF) electronic warfare subsystem.

RTI's Network Data Distribution Service (NDDS), the first commercially available publish-subscribe middleware based on the Object Management Group's (OMG's) Data Distribution Service (DDS) V1.0, has been integrated with Green Hills Software's Integrity RTOS, the first operating system to be certified under the "Posix: certified by IEEE and the Open Group" programme to the latest IEEE1003.1-2003 system interfaces product standard.

Dan Mender, Green Hills Software's Director of Business Development, explained: "Green Hills Software's Integrity RTOS has proven itself in many mission-critical systems".

"As an example, it has been mandated by the JSF programme because it provides the highest level of security, reliability and performance requirements".

"With RTI's NDDS support for fault-tolerant and high-availability applications, the combination is a strong software infrastructure solution for those developing distributed safety-critical and mission-critical applications".

A requirement common to most real-time distributed applications is the need to pass data efficiently between different subsystem modules.

These modules may be on different processors or spread across multiple computers connected through a transport mechanism such as Ethernet, shared memory or a backplane such as VME.

These subsystems gather and generate data through interfaces with sensors, monitor and process data, or control and communicate with other subsystems.

Under the OMG DDS standard, developers specify various quality of service (QoS) parameters such as reliability versus best-effort delivery, expected rates of publication and how long data are valid throughout the network.

Modules sending data become publishers and are only concerned with the specific data type they communicate.

Modules needing specific information are subscribers and only need to know about the particular data they wish to receive.

NDDS takes advantage of the capabilities inherent in the data-centric publish-subscribe (DCPS) model to offer a high-quality implementation developed with the requirements of real-time and embedded systems in mind.

NDDS minimises the need for multiple data copies, resulting in increased performance.

Also, NDDS allows the application to pre-allocate resources, increasing reliability and real-time determinism.

The Integrity RTOS provides a complete development solution for real-time, mission-critical and safety-critical systems.

Capable of meeting the industry's most demanding security and safety standards, the Integrity RTOS is securely partitioned, guaranteeing each task the resources it needs to run correctly while fully protecting the operating system and user tasks from errant and malicious code, including denial of service attacks, hackers, worms and Trojan horses.

It features advanced memory-protection capabilities, an optional ARINC653 partition scheduler, dynamic download, task- and system-level debug, and a configurable real-time event analyser tool.

The Integrity RTOS is built on Green Hills Software's small and fast Velosity microkernel.

Both products share a rich set of device drivers, board support packages and middleware, including IPv4, IPv6, IPsec, SSL, SSH, web server and graphics.

The ability to migrate seamlessly between the Velosity microkernel and the Integrity RTOS provides embedded software developers with unprecedented scalability.

NDDS integrated with Green Hills Software's Integrity RTOS is immediately available with full support and maintenance from RTI starting at US $46,920 for a three-user licence.

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