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RANDOM SEED

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RANDOM_SEED = [integer array]
Default: RANDOM_SEED = based on the system clock 

Description: RANDOM_SEED specifies the seed of the random-number-generator (in case VASP was compiled with -Dtbdyn).


The random-number-generator (RNG) is used at several instances of a molecular dynamics simulation such as the initialization of atomic velocities, the Andersen thermostat (MDALGO=1 | 11), etc. The seed for the RNG can be supplied by the user by means of the RANDOM_SEED-tag. This is useful, for instance, if one needs to reproduce a previously performed calculation.

The initial value of RANDOM_SEED, and the value after performing each MD step are written in the REPORT file.

Related Tags and Sections

MDALGO

Examples that use this tag