GATHER_REPLICAS
This is part of the analysis module

Create a vector that contains the copies of the input quantities from all replicas

Examples
Glossary of keywords and components
Description of components

By default the value of the calculated quantity can be referenced elsewhere in the input file by using the label of the action. Alternatively this Action can be used to calculate the following quantities by employing the keywords listed below. These quantities can be referenced elsewhere in the input by using this Action's label followed by a dot and the name of the quantity required from the list below.

Quantity Description
rep the input arguments for each of the replicas
Compulsory keywords
ARG the argument from the various replicas that you would like to gather
Options
NUMERICAL_DERIVATIVES

( default=off ) calculate the derivatives for these quantities numerically