Fix some warnings, keeping sign-compare warnings #1066

Job	Run time
id_repo	1s
lint	13s
docker-build (oldest, cpu)	31m 10s
docker-build (oldest, hip)	1h 1m 41s
docker-build (latest, cpu)	29m 51s
docker-build (latest, cuda)	48m 43s
docker-build (latest, hip)	55m 59s
clang-tidy-test	4m 42s
test (oldest, cpu-gcc, 17, Debug)	4m 33s
test (oldest, cpu-gcc, 17, Release)	4m 26s
test (oldest, cpu-gcc, 20, Debug)	5m 36s
test (oldest, cpu-gcc, 20, Release)	5m 16s
test (oldest, cpu-clang, 17, Debug)	3m 9s
test (oldest, cpu-clang, 17, Release)	4m 52s
test (oldest, hip, 17, Debug)	12m 14s
test (oldest, hip, 17, Release)	12m 1s
test (oldest, hip, 20, Debug)	13m 15s
test (oldest, hip, 20, Release)	11m 37s
test (latest, cpu-gcc, 17, Debug)	5m 11s
test (latest, cpu-gcc, 17, Release)	5m 24s
test (latest, cpu-gcc, 20, Debug)	4m 28s
test (latest, cpu-gcc, 20, Release)	4m 18s
test (latest, cpu-gcc, 23, Debug)	6m 2s
test (latest, cpu-gcc, 23, Release)	4m 8s
test (latest, cpu-clang, 17, Debug)	3m 24s
test (latest, cpu-clang, 17, Release)	3m 54s
test (latest, cpu-clang, 20, Debug)	3m 37s
test (latest, cpu-clang, 20, Release)	4m 22s
test (latest, cpu-clang, 23, Debug)	4m 18s
test (latest, cpu-clang, 23, Release)	4m 19s
test (latest, cuda, 17, Debug)	10m 32s
test (latest, cuda, 17, Release)	12m 1s
test (latest, hip, 17, Debug)	12m 30s
test (latest, hip, 17, Release)	11m 12s
test (latest, hip, 20, Debug)	12m 51s
test (latest, hip, 20, Release)	11m 21s
test (latest, hip, 23, Debug)	12m 53s
test (latest, hip, 23, Release)	13m 1s
	7h 39m 5s

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