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Re:Free-threaded CPython is ready to experiment with by nly on Saturday July 13, 2024 @05:19AM (#40952819)
Last I checked cppyy didn't build any code with optimisations enabled (same as cling)
Re:Free-threaded CPython is ready to experiment with by ipsod on Saturday July 13, 2024 @12:17PM (#40954901)
It seems like you might be able to enable some optimizations with EXTRA_CLING_ARGS. Since it's based on cling, it's probably subject to whatever limitations cling has.

To be honest, I don't know much about the speed, as my use-case isn't speeding up slow code.