Reduces SHM element allocation #1622

Job	Run time
Check Docker image (Release)	2m 11s
Check Docker image (Debug)	1m 56s
Check codespell conformance	10s
Check src clang-format conformance	31s
Check tests clang-format conformance	17s
Build Debug with clang-14	1m 43s
Build Debug with g++-9	1m 37s
Build Debug with g++-12	1m 33s
Build Debug with g++-10	1m 31s
Build Debug with g++-13	6m 11s
Build Debug with g++-11	1m 53s
Build Debug with clang-13	2m 1s
Build Debug with clang-16	1m 42s
Build Release with clang-14	1m 56s
Build Release with g++-10	1m 50s
Build Release with g++-11	1m 47s
Build Release with g++-13	6m 49s
Build Debug with clang-17	1m 46s
Build Release with g++-12	2m 5s
Build Release with clang-17	2m 11s
Build Release with g++-9	2m 31s
Build Release with clang-13	1m 46s
Build Release with clang-18	1m 51s
Build Release with clang-15	1m 41s
Build Debug with clang-15	2m 12s
Build Debug with clang-18	1m 48s
Build Release with clang-16	2m 21s
Codecov report upload	0s
	55m 50s

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