rtable managment of parallel R processes. However, <span class="pkg">peperr</span> is usable with any other cluster solution supported by <span class="pkg">snowfall</span>, i.e. sfCluster has not to be installed to use package <span class="pkg">peperr</span>. Note that this may require cluster handling by the user, e.g. manually shut down with 'lamhalt' on commandline for <code>type="MPI"</code>. But, using a socket cluster (argument <code>parallel=TRUE</code> and <code>clustertype="SOCK"</code>), does not 