I am using Mathematica 10.4 in GUI mode on stampede supercomputer. I am using a single node on this machine and each node has two 8 core chips. Whenever I try to parallelize my code on 16 cores(using only one node) by launching kernels, it does not allow me and continue to compute the solution on a single core. The $ProcessorCount command showed me that there is only one processor. If on each node there are two 8 core chips that it should show me 8 or 16. I cannot figure out a way to connect all cores on one node. If anyone knows about it, please let me know asap.