The instant invention relates to a reactor useful in upgrading heavy oils admixed with a catalyst composition in a slurry. 01 to 9 mole % of constituent units derived from allylamine or a salt thereof and 91 to 99. The node controller is configured to determine whether an error count is less than or equal to a first threshold number of error bits and, in response to the error count being less than or equal to the first threshold number of error bits, performing correction of the error bits by the hardware logic implemented ECC engine associated with the node controller.