An efficient approach to unstructured mesh hydrodynamics on the cell broadband engine (u)
- Los Alamos National Laboratory
Unstructured mesh physics for the Cell Broadband Engine (CBE) has received little or no attention to date, largely because the CBE architecture poses particular challenges for unstructured mesh algorithms. SPU memory management strategies such as data preloading cannot be applied to the irregular memory storage patterns of unstructured meshes; and the SPU vector instruction set does not support the indirect addressing needed by connectivity arrays. This paper presents an approach to unstructured mesh physics that addresses these challenges, by creating a new mesh data structure and reorganizing code to give efficient CBE performance. The approach is demonstrated on the FLAG production hydrodynamics code using standard test problems, and results show an average speedup of more than 5x over the original code.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC52-06NA25396
- OSTI ID:
- 1044158
- Report Number(s):
- LA-UR-10-08290; LA-UR-10-8290; TRN: US201214%%351
- Resource Relation:
- Conference: NECDC 2010 ; October 18, 2010 ; Los Alamos, NM
- Country of Publication:
- United States
- Language:
- English
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