From what I've seen, PGI's offloading (with OpenACC) still delivers better performance than GCC, although GCC is improving. Also PGI usually give better error m

From what I've seen, PGI's offloading (with OpenACC) still delivers better performance than GCC, although GCC is improving. Also PGI usually give better error messages or comments about what it's doing when offloading. But yes offloading with PGI is for Nvidia cards only, and GCC contributors are working on adding support for offloading to AMD GPUs.