GPU Sparse Graph Traversal
GPU Sparse Graph Traversal
GPU Sparse Graph Traversal
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(4) SIMD simultaneous discovery<br />
“Duplicates” in edge-frontier yield redundant work<br />
0 1 2<br />
3 4<br />
6 7<br />
Duane Merrill, University of Virginia<br />
Exacerbated by wide SIMD<br />
Compounded every iteration<br />
5<br />
8<br />
0 1 2<br />
3 4<br />
6 7<br />
5<br />
8<br />
0 1 2<br />
3 4<br />
6 7<br />
5<br />
8<br />
0 1 2<br />
3 4<br />
6 7<br />
Iteration 1 Iteration 2 Iteration 3 Iteration 4<br />
5<br />
8<br />
16
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