• HyRAS introduces a hybrid fault-tolerant architecture that combines lightweight spatial redundancy and adaptive serialization to maintain communication in chiplet-based 3D NoCs despite permanent TSV faults.
• The spatial redundancy mechanism leverages shared TSV resources to handle isolated faults, while adaptive serialization ensures connectivity under severe fault scenarios.
• Functional simulations under realistic workloads with significant defect clusters show up to 28.2% higher throughput compared to contemporary fault-tolerant methods.
• The architecture incurs modest overheads: a 14.53% increase in area and an 8.87% increase in power relative to a standard redundancy-based router.