RANDOM SEED: Difference between revisions
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== Related Tags and Sections == | == Related Tags and Sections == | ||
{{TAG|MDALGO}} | {{TAG|IBRION}}, {{TAG|MDALGO}} | ||
{{sc|RANDOM_SEED|Examples|Examples that use this tag}} | {{sc|RANDOM_SEED|Examples|Examples that use this tag}} | ||
Revision as of 09:11, 6 April 2022
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.
An input for the random seed should look like the following:
RANDOM_SEED = 248489752 0 0
The initial value of RANDOM_SEED, and the value after performing each MD step are written in the REPORT file.