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Jukka Aho
d07220aa76
- Alternative to element-by-element assembly for GPU/matrix-free - Node-by-node loop eliminates atomic operations on GPU - Spider pattern: nodes couple with 10-30 neighbors not all N - NodeToElementsMap: inverse connectivity (node → elements) - get_node_spider() finds coupled nodes for sparse stiffness - NodalStiffnessContribution: 3×3 blocks per node - 307 lines: Experimental architecture with working prototype