Model order reduction (MOR) plays a crucial role in the design process of integrated circuits. With the increasing complexity of modern circuits and the growing demand for faster simulations, finding efficient methods to reduce the model order has become a pressing issue. The article introduces the MORCIC project, which aims to address this challenge by proposing new MOR techniques that outperform existing commercial tools.

The Challenge: Passive RLC Elements

One of the main challenges in circuit modeling is the large number of passive RLC elements that are present in electromagnetic models extracted from physical layouts. These elements contribute significantly to the extraction time, storage requirements, and, most critically, the post-layout simulation time. Therefore, finding effective ways to reduce their impact is of utmost importance.

The MORCIC Project Solution

The MORCIC project sets out to overcome the limitations of traditional MOR techniques by introducing novel methods that yield smaller Reduced Order Models (ROMs) without compromising accuracy. The experimental evaluation on multiple analog and mixed-signal circuits with millions of elements showcases the effectiveness of these proposed techniques.

Key Findings: Smaller ROMs with Comparable Accuracy

According to the evaluation results, the proposed MOR techniques lead to ROMs that are 5.5 times smaller compared to ANSYS RaptorX’s golden ROMs. This reduction in size has significant implications for simulation time, storage requirements, and overall computational efficiency. However, it is important to note that maintaining accuracy is also crucial in order to ensure reliable circuit analysis.

Implications for Circuit Designers

The MORCIC project’s advancements in MOR techniques offer promising prospects for circuit designers. With smaller ROMs, designers can achieve faster simulations and more efficient storage utilization. These benefits not only enhance productivity but also allow for more extensive explorations of design alternatives and optimization.

“The experimental evaluation on several analog and mixed-signal circuits with millions of elements indicates that the proposed methods lead to x5.5 smaller ROMs while maintaining similar accuracy compared to golden ROMs provided by ANSYS RaptorX.”

This statement from the article highlights the significance of the MORCIC project’s contributions. By providing smaller ROMs with similar accuracy, the proposed techniques offer a clear advantage over existing commercial tools. The ability to achieve comparable results while reducing computational resources is a step forward in improving the overall efficiency of circuit design.

Looking ahead, it will be interesting to see how the MORCIC project further develops its techniques and extends their applicability to more complex circuit designs. As technology continues to advance, the demand for faster and more accurate simulations will only increase. Therefore, ongoing research and development in MOR techniques will play a crucial role in meeting these evolving needs.


The MORCIC project’s aim to address the challenges posed by passive RLC elements in circuit modeling is commendable. By proposing new MOR techniques that result in significantly smaller ROMs without sacrificing accuracy, this research contributes towards enhancing the computational efficiency of integrated circuit design. Continued advancements in MOR methods will undoubtedly have a profound impact on the future of circuit simulation and facilitate more rapid innovation in various industries that rely on highly complex electronic systems.

Read the original article