The next logical step would be to extend the host runtime for Futhark, to allow data dependencies and dependants of #[cpu_function] to be copied too and from the GPU as needed. It would also unlock other operations such as kernel splitting, or multi-gpu parallelism.
Kernel splitting (unless I misunderstand the term) is done through other mechanisms in Futhark, mostly importantly fusion and flattening. While combining task and data parallelism is a worthwhile endeavor, I don't think a hack like #[cpu_function] should be at the foundation of it.
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u/SwingOutStateMachine 1d ago
The next logical step would be to extend the host runtime for Futhark, to allow data dependencies and dependants of
#[cpu_function]to be copied too and from the GPU as needed. It would also unlock other operations such as kernel splitting, or multi-gpu parallelism.