CI on Linux

Use `usize` for indices and dimensions #595

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Run time

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Job	Run time
Build / Ubuntu-24.04 / CUDA-12.8.1 / ARM64	11m 24s
Build / RockyLinux-9 / CUDA-12.8.1 / x86_64	14m 8s
Build / Ubuntu-24.04 / CUDA-12.8.1 / x86_64	13m 28s
Compile tests	5m 46s
	44m 46s