We are working on GPU support for GROMACS. We are paying a contractor to implement some changes. This is going to cost us $500 total. I'm planning to contribute $200 out of my pocket and hopeing to get some donations. We will submit these customizations to for BOINC integration to the OpenMM project. If they do not include them, we will make them available somewhere else. http://hydrogenathome.org/donations.php -Jack