No. It is not very efficient to use a multi-threaded version of ENVI-met because it needs a constant data exchange between the processes. Also the memory requirements will double as there will be one global data field for all processes and one local data field on which the single threads work on. In addition a lot of synchronization and management overhead will be necessary. Therefore it is better to run more than one version of ENVI-met on the PC if you really want all of your CPUs to work…