Gruber was paid millionsto run computer models.
Did he run those models on MIT computers while on the clock using MIT grad students as slaves??
I would imagine Gruber made certain that he controls the source code and the best way to do that is for him to have written the code himself and then keep it to himself. It is reportedly only 15k lines of source code. I would imagine it is coded in a common language such as C, C++, or Fortran, to aid portability to arbitrary computers. One thing the WH boasted when it no-bid contracted with the Groob was his ability to perform quick turnaround on new input parameters. Therefore it is conceivable that runs of the code could take just a few hours or even just a few minutes on a mid-size Mac laptop.