If you deploy the code on a large number of machines, especially out of your control, most of those don't apply. There is a large scale of problems that require

If you deploy the code on a large number of machines, especially out of your control, most of those don't apply. There is a large scale of problems that require/benefit from optimised non-GPU code: - OS and related tools - applications (e.g. image processing, spreadsheets, engineering applications) - browsers - games - compilers - low level libraries - databases Yyou are probably using many of those and would not enjoy them being slower.