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I intentionally said "more towards embarrassingly parallel" rather than "only embarrassingly parallel". I don't think there's a hard cutoff, but there is a qualitative difference. One example that springs to mind is https://github.com/simdjson/simdjson - afaik there's no similarly mature GPU-based JSON parsing.

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I'm not aware of any similarly mature GPU-based JSON parser, but I believe such a thing is possible. My stack monoid work [1] contains a bunch of ideas that may be helpful for building one. I've thought about pursuing that, but have kept focus on 2D graphics as it's clearer how that will actually be useful.

[1]: https://arxiv.org/abs/2205.11659

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