I just made public my GitHub repository with a Matlab library for RRTMG, which I had announced here and had stored on Guillimin.
https://github.com/blyankinshtein/rrtmg_libraries
The library contains functions to run both RRTMG Longwave and Shortwave, by creating tape-files from ERA-Interim data and some standard atmospheric profiles.
Any questions are welcome. Enjoy!
AtmRad @ McGill 