, functions and libraries necessary for computation on each of these R processes, so explicitly all variables, functions and libraries required by the, potentially user-defined, functions <code>fit.fun</code>, <code>complexity</code> and <code>aggregation.fun</code>. The simplest possibility is to load the whole content of the global environment on each node and all loaded libraries. This is done by setting argument <code>load.all=TRUE</code>. This is not the default, as a huge amount of data is potentially