All You Need to Know About Deterministic Modeling Operating System

Deterministic modeling is one of the many ways to do an analytic evaluation. For that, a certain scheduling algorithm of an OS is analyzed and evaluated by doing a comparative analysis based on its efficiency with other algorithms that work with a specific, predetermined workload.

Introduction to a Deterministic Model

A deterministic model is the model in which there occurs no randomness in the generation of future states. In other words, a deterministic model is designed to always produce the same result for a given initial input.

You can use a deterministic modeling operating system to determine a future event accurately without depending on random variables. This type of operating system has all essential data to determine the outcome with certainty.

Deterministic Model vs. Probabilistic Model: What is the difference?

Each aspect of a deterministic modeling OS is pre-determined, or in other words, guaranteed This also means that there is zero randomness in this type of model. A deterministic modeling operating system will execute and perform a function the same way every time you run it with the same input and under the same conditions.

However, in ordinary Windows OS and other operating systems that are based on probabilistic models, there are several elements and factors that introduce randomness. Such operating systems may produce different outcomes in every iteration even if the same input is supplied under the same conditions.

The Process to Analyze a Scheduling Algorithm

In any kind of operating system, the evaluation of a scheduling algorithm is accurately done only when you program it, install it in the operating system, and see how it functions. This is the best way to evaluate and analyze a scheduling algorithm of an operating system. When you implement the actual scheduling algorithm in a real OS, you can evaluate it based on given real conditions and circumstances.

The problem with this approach is that it is expensive and also complicated Therefore, multiple methods are utilized to evaluate a scheduling algorithm, including a predetermined workload, queuing theory, simulation of the situation, and the process of implementation.

In the world of operating systems, there are various kinds of scheduling queues, such as:



Job queue (almost all processes in an OS use this queue) 

Ready queue (it includes the set of processes that are ready and waiting) 

Block queue (it refers to the queue of processes that have been blocked due to some issues such as the unavailability of a resource)

When designing deterministic modeling-based operating systems, only deterministic algorithms are implemented so that a deterministic OS generates the same output each time if the same input is given. Besides, during this execution, it utilizes the same amount of time, memory, and resources each time it runs.

One good example of a deterministic model is a real-time operating system (RTOS) launched by IntervalZero. This RTOS allows you to benefit from the determinism of the RTX64 scheduler, and RTOS-quality precision. Besides, with this RTOS, you are also free to use secure networking, tools, software, IoT applications, and other features available within the Windows ecosystem.