GMC is installed via installing the Seaquest software distribution. Instructions on installing this can be found on page 8 of document 1066 on the Seaquest doc-db. I recommend installing this on either seaquestgpvm01 or seaquestgpvm02. Not only will this lead to easier debugging but this is also where we submit jobs to Fermigrid. Grid computing is required to generate relevant amounts of GMC in a reasonable timeframe.