I'm looking to try an OPi5 for GPGPU. After seeing trunk recently added the patches needed to use the "gofaster" option for panfork, and having seen reports of glmark2 scores of 4000 and 5000 while never coming close to that myself, I decided to pull together the various bits of info out there and just try all of the options. A number of things done below are often described vaguely -- hopefully it's helpful here to lay out a concrete set of steps to follow and what to expect.   There