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Parallelism strategies for finite difference acoustic wave simulation operators on GPUs

Grant number: 22/00434-0
Support Opportunities:Scholarships in Brazil - Scientific Initiation
Effective date (Start): March 01, 2022
Effective date (End): June 30, 2023
Field of knowledge:Physical Sciences and Mathematics - Computer Science - Computing Methodologies and Techniques
Principal Investigator:Hermes Senger
Grantee:Letícia Suellen Farias Machado
Host Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
Associated scholarship(s):22/11070-9 - Optimization strategies for the acoustic wave stencil on multicore systems, BE.EP.IC


Algorithms for numerically solving partial differential equations (PDEs) are used in different application domains to approximate the physics of interest. In the context of seismic applications, the process has a high computational cost as they constitute the computational core of inverse problems involving computation in the order of Exascale. The demand for high performance implies that every code must be highly optimized for diverse and rapidly evolving computer architectures. The general objective of this research is to investigate operator code optimization strategies for numerical simulation of acoustic wave propagation for execution on GPUs. Such codes implement well-known stencil patterns that can benefit from the massive parallelism of GPUs but lead to a performance bottleneck in memory accesses.(AU)

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