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formation:astrosim2017gpu4dummies [2017/07/07 15:36] equemene [Pi Monte Carlo, a Compute Bound Example] |
formation:astrosim2017gpu4dummies [2017/07/10 18:52] (Version actuelle) equemene [NBody, a simplistic simulator] |
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| ==== NBody, a simplistic simulator ==== | ==== NBody, a simplistic simulator ==== | ||
| + | The ''NBody.py'' code is a implementation of N-Body kepkerian system on OpenCL devices. | ||
| + | |||
| + | It's available on: | ||
| + | * on file: ''/scratch/AstroSim2017/NBody.py'' on workstations | ||
| + | * on website: [[http://www.cbp.ens-lyon.fr/emmanuel.quemener/documents/Astrosim2017/NBody.py|NBody.py]] | ||
| + | |||
| + | Launch the code with a ''N=2'' on ''1000'' iterations with a graphical output | ||
| + | <code> | ||
| + | python NBody.py -n 2 -g -i 1000 | ||
| + | </code> | ||
| + | |||
| + | {{ :formation:nbody_n2_gpu.png?600 |}} | ||
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| + | === Exercice #10 : explore ''NBody.py'' with different devices === | ||
| + | |||
| + | === Exercice #11 : explore ''NBody.py'' with steps and iterations === | ||
| + | |||
| + | === Exercice #12 : explore ''NBody.py'' with Double Precision === | ||
| ===== Exploration with production codes ===== | ===== Exploration with production codes ===== | ||
| ==== PKDGRAV3 ==== | ==== PKDGRAV3 ==== | ||
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