I prefer index calculation and comparison be executed on the GPU.
I have stumbled upon PGStrom.
It seems one could infer that it will calculate index comparisons, but the claim doesn't seem to be made explicitly, and I stopped assuming years ago.
As an example, would PGStrom calculate this where condition:
SELECT * FROM some_parent, some_child WHERE some_parent.bigint_id = some_child.parent_bigint_id
Does PGStrom calculate relational comparisons?