Three-dimensional board-to-board free-space optical interconnects and their application to the prototype...

Area of Science:

• Computer Engineering
• Optical Engineering
• High-Performance Computing

Background:

• Traditional multiprocessor systems face challenges with wiring congestion, signal delay, and clock skew.
• Existing interconnection technologies limit scalability and performance in complex computing architectures.

Purpose of the Study:

• To construct and evaluate a prototype multiprocessor system utilizing three-dimensional (3D) board-to-board free-space optical interconnects.
• To demonstrate the effectiveness of 3D free-space optical interconnects in addressing common interconnection problems.

Main Methods:

• Development of a prototype system, COSINE-III, featuring 64 processing units arranged in a 3D mesh network.
• Implementation of bidirectional board-to-board free-space optical interconnects for system communication.
• Theoretical analysis of the proposed interconnection scheme.

Main Results:

• Successful construction and operation of the COSINE-III prototype as a functional multiprocessor system.
• Theoretical validation that 3D free-space optical interconnects mitigate wiring congestion, signal delay, and clock skew.
• Demonstration of the system's inherent ease of expansion for larger and more flexible configurations.

Conclusions:

• The prototype 3D multiprocessor system with free-space optical interconnects is a viable and effective solution.
• This technology offers significant advantages over conventional interconnects for future high-performance computing.
• The system architecture is scalable and adaptable for advanced computing needs.