Status changed from New to Refused
In RC4 it works correctly - it uses the predefined number of cores, with some exceptions - if you set up Genetic Evollution with let's say 40 islands then the evolution on all 40 islands is performed in parallel on all cores. But backtests for each strategy in those islands is made only on the fixed number fo cores you specified.
So you migth see some work on all cores in situations like this, but most of the work will be done by a predefined number of cores.