SSCHA
Little question about random seed for generating ensembles #359
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Hi, @mesonepigreco: I find that random seed is fixed in the tutorial https://sscha.eu/Tutorials/tutorial_02_advanced_submission/, like this: This is interpreted as generating the same ensemble. |
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"Same" means that each time the code runs, it generates the same sequence of random numbers (therefore, the same displacements). In this way, the behavior is deterministic and reproducible. It is not necessary; it was just employed in that tutorial as part of the SSCHA school to use an ensemble of configurations for which we had pre-computed the DFT results; in that way, everyone in the school could use the pre-computed files instead of re-running the DFT calculations on that specific ensemble. |
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Thanks! I see it. |
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"Same" means that each time the code runs, it generates the same sequence of random numbers (therefore, the same displacements). In this way, the behavior is deterministic and reproducible. It is not necessary; it was just employed in that tutorial as part of the SSCHA school to use an ensemble of configurations for which we had pre-computed the DFT results; in that way, everyone in the school could use the pre-computed files instead of re-running the DFT calculations on that specific ensemble.