RAMSES on the GPU
RAMSES on the GPU
RAMSES on the GPU
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ResultsSedov Blast wave test (hydro <strong>on</strong>ly):9ACC NVECTOR Ttot Tacc Ttransf Eff. Speed-‐up OFF -‐ 1 Pe 10 94.54 0 0 ON 512 55.83 38.22 9.2 2.012820513 ON 1024 45.66 29.27 9.2 2.669969252 ON 2048 42.08 25.36 9.2 3.068611987 ON 4096 41.32 23.2 9.2 3.293965517 ON 8192 41.19 23.15 9.2 3.304535637 20 GB tranferred in/out POOR performance improvement – four mainproblems:• Data structure, irregular data distributi<strong>on</strong>• Amount of transferred data• Low flops per byte ratio• Asynchr<strong>on</strong>ous operati<strong>on</strong>s not permitted
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