Woudln't the more accurate example of APL on the GPU be co-dfns? Is there a way to make J target the GPU? I feel like APL stuff is more limiting because it inv

Woudln't the more accurate example of APL on the GPU be co-dfns? Is there a way to make J target the GPU? I feel like APL stuff is more limiting because it invariably results in paying Dyalog for a toolkit (which severely limits my ability to use it at work).