Altreonic: VirtuosoNext Designer implements fine grain space and time partitioning

Altreonic has now ported VirtuosoNext Designer to the Freescale QorIQ T2080/1 processor. The chip has 8 floating point cores implemented as 4 CPUs with a dual register set running at 1.8 GHz. The latest port of VirtuosoNext Designer delivers unprecedented hard real-time capability in the microsecond range in combination with fine grain task level space and time partitioning for embedded safety-critical applications.

In contrast to traditional hypervisor based partitioning schemes, VirtuosoNext protects each application task separately in memory with a real-time response still available in the microseconds range as one expect from using an RTOS.  Moreover, the code size is measured in Kbytes, allowing optimal use of the on-chip caches for best performance.

The small code and low latency are beneficial for all applications. A semaphore loop (using 4 kernel services and 6 context switches) only takes 5.64 microseconds without space partitioning and 6.01 microseconds with space portioning.  This semaphore loop is used as a stress test when measuring the interrupt latency as it continuously invokes the kernel resulting in context switches. The interrupt latency from IRQ to ISR exhibits a histogram with a spread between 286 and 793 nanoseconds without partitioning, which increases to 819 nanoseconds with partitioning enabled. The minimal IRQ to task latency was measured at 2.158 microseconds without partitioning, increasing to 2.262 microseconds (partioning enabled). Under the stress test conditions, the worst case latency remained at 3.848 microseconds.

The fine-grain space partitioning implementation of VirtuosoNext is lightweight both in code size and in runtime impact. The code size of VirtuosoNext without Space Partitioning enabled was measured by building the same application using all available Services (compiled with Os).  The T2080 code size only moderately increases from 1280 bytes to 38504 bytes, which is a moderate increase. Note that the code sizes given include the runtime library of the compiler and the system initialisation.

Besides high performance and productivity, VirtuosoNext Designer is also tailored for safety and security critical applications. As the code is generated as a static image, it eliminates many of the runtime errors that can occur with more traditional dynamic (RT)OS. The packet switching architecture also reduces typical pointer errors and provides extra security. Last but not least, the protected version of VirtuosoNext has built in support for error detection and recovery as well as fine grain space and time partitioning. The latter makes use of the processor’s MMU and allows detecting memory access violations at the Task level. The unique architecture of VirtuosoNext Designer provides the protection of a traditional hypervisor with the real-time responsiveness of an optimised RTOS.


WSI's OLED Professional innovations create more value for You.

WSI are the PMOLED manufacturer and our factory located in Chun-Nan in Taiwan. Our products are the market leader and pioneer in PMOLED module, including the monochrome, area colors and full color one...


SKIPPER UBT21 - a Bluetooth 4.0 USB serial adapter for industrial and medical use

SKIPPER UBT21 is a Bluetooth 4.0 USB serial adapter for industrial and medical use. It incorporates a Bluetooth Dual-Mode Stack, supports ranges of up to 300 meters and transferrates of 720 kbit/s (ne...


Three of a kind - Versatility based on Low Power ARM Cortex-A15

At this year's Embedded World, MEN has presented three low power, ARM Cortex-A15-based solutions on different form factors: a VMEbus SBC, an industrial box PC and a COM Express Mini module. All so...


Enabling Embedded IoT

Eurotech, a long-time leading provider of embedded systems and a global leader in IoT enablement, showed its new modules and Multi-service IoT Gateways at Embedded World 2017. The newly introduced Eu...


PLS’ UDE and new UAD2next allow more powerful trace analysis of embedded multicore systems

The new Universal Debug Engine 4.8 from PLS Development Tools offers a bunch of new and improved features for trace analysis of embedded multicore systems. With the new access device UAD2next PLS cont...


Disruptive technologies

Rahman Jamal, Global Technology & Marketing Director, National Instruments, talks about disruptive technologies in the consumer world, but also in measurement, automation, and the embedded industr...


AdaCore Announces Availability of QGen Debugger at Embedded World 2017

Jose Ruiz, technical lead at AdaCore for the company's QGen automatic code generator toolset for model-based development, discusses that product and explains what differentiates it from other prod...


SECO IoT roadmap: from the proof of concept to the market

During Embedded World 2017 Gianluca Venere, SECO Director of Global Sales, leads us to discover the company's Industrial IoT roadmap showcased at SECO's main booth, along with the latest UDOO ...


Internet of Chocolate

HCC show off an embedded chocolate vending machine using MQTT to connect to a broker in the cloud. There is an important message behind this cool demo – security and reliability of embedded soft...