Domain Decomposition for High-Frequency Elastic Full Waveform Inversion

The patent divides the computational domain into multiple subdomains that can be processed in parallel across multiple GPUs. The subsurface offset domain is segmented such that each GPU handles a specific portion, reducing the memory burden on any single device while maintaining high-frequency simulation capabilities. This segmentation allows the system to achieve high resolution imaging without requiring excessive memory on a single GPU.

The patent optimizes the domain decomposition strategy by carefully controlling the data exchange interfaces between subdomains. Only the necessary boundary data is exchanged between GPUs, minimizing communication overhead. The stencil size and data exchange regions are optimized to reduce the amount of data that needs to be transferred while maintaining computational accuracy, thus reducing the energy loss associated with data exchange.

The computational domain is segmented into multiple subdomains that can be processed in parallel, improving overall processing capability. The patent carefully designs the segmentation strategy to minimize the surface area of interfaces between subdomains, thereby reducing the data exchange costs while maintaining high parallel processing efficiency.

The patent implements domain decomposition that divides the high-frequency simulation workload across multiple GPUs. Each GPU processes a specific subdomain with reduced memory requirements, while the collective system maintains the high resolution capabilities needed for accurate subsurface imaging. This approach enables high-frequency simulations without requiring any single GPU to have excessive memory capacity.