metal : reuse graphs #14570
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metal : reuse graphs #14570
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PoC for #14482 (comment)
This is a hacky implementation of the idea in the comment. It works but it does not lead to any measurable improvement. The reason is that we already do the CPU/GPU overlap by submitting the first 128 graph nodes and while their are computing, we prepare and submit the rest of the graph. This is already enough to completely mask the CPU overhead of constructing the Metal graph, so there is no point in adding logic to reuse a previous Metal graph.