Hi Rick,
The reported speedups are for electron-phonon matrix element interpolation and downstream calculations that benefit. That includes almost everything at this point except “ephwrite” where more than 1 image is not allowed. However, electron-phonon interpolation should benefit from GPU acceleration.
For Anisotropic Eliashberg calculations, we are working on image-parallelization and should be available in the develop branch of EPW (https://gitlab.com/epw/q-e.git) in near future.
Let me know if you have any further questions.
Best,
Sabya.