Back to the main page of this manual  Input reference of CP2K version 9.1 
CP2K_INPUT /
FORCE_EVAL /
SUBSYS
SEED {Integer} ... 

Initial seed for the (pseudo)random number generator for the Wiener process employed by the Langevin dynamics. Exactly 1 or 6 positive integer values are expected. A single value is replicated to fill up the full seed array with 6 numbers.  
This keyword cannot be repeated and it expects a list of integers.  
Default value:
12345 
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