I forgot to mention that windows will fail with the “ImportError: DLL . . .” above if you have the wrong version of MKL installed:
https://forum.devsim.org/t/new-intel-mkl-issue
Version 2.0.1 of devsim uses the newest MKL, so you can try:
conda install mkl
to get the latest version. If your packages do not work with the newest MKL, you can try devsim version 2.0.0, which uses the previous version of MKL.