Artelys Knitro is now available on ARM and opens up to the embedded world

5 October 2020

— Knitro is now available for embedded systems running on ARM architectures and opens up to an even wider field of applications!

With the development of smartphones, IoT and complex automated systems such as autonomous vehicles, there are more and more opportunities to integrate sensor-driven machine learning and optimization into embedded systems.

These technologies are widely used in AI, but why exactly use a nonlinear solver into embedded systems?

The solver may be used during the training phase of a Machine Learning model

For instance, a vision system that detects defects on a production line may have learnt from a set of data comprised of both compliant and faulty products. In practice this training involves the adjustment of many parameters in order to minimize the error rate. This often means solving a nonlinear optimization problem.


During the training phase of the model, many parameters are chosen in order to minimize a nonlinear objective function comprised of both the error and a regularization term.


In many cases, the training phase is carried out in the cloud, and the trained model is used to perform inference on the device. However, this process is slow because of the time needed to transmit the data and model updates between the device and the server. In situations where the device is expected to learn and respond to the new scenario instantly, there will be a need for local model updates. Local training also addresses the important issue of privacy, as the data does not need to leave the device.

Some applications require to perform real-time numerical optimization

Self-driving cars integrate machine learning and optimization in a complimentary way. The first enable the system to learn how to identify static and moving objects, as well as signalization.


Then the vehicle must compute a trajectory towards the desired location that maximizes safety and comfort while minimizing energy consumption and travel time, taking into account obstacles, signalization, road shape… This is a nonlinear optimization problem. And there are many more examples of embedded optimization such as drone stabilization or rocket landing!

Knitro 12.2 is available on demand for ARM processors (ARMv7 (32 bits) and ARMv8 (64 bits)). Moreover, for the enthusiasts, Knitro is available for Raspberry Pi (ARMv7, Raspbian 9).

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