the Intel folks could comment better on this, but afaik there is no possibility to get a non-commercial license at the moment. However, you could participate in the beta evaluation program of the 2019 version of the compiler: https://software.intel.com/en-us/articles/intel-parallel-studio-xe-2019-beta
However, that program is only running for 4 or 5 more weeks and would then expire.
Intel withdrew the non-commercial license due to too much abuse. I keep hearing rumors it may reappear in a different form, but for now, Jürgen's advice is best.