v7.2.1 #448

Job	Run time
macos	58m 23s
msvc (with OpenMP)	8m 24s
mingw (MINGW64)	9m 50s
msvc (without OpenMP)	7m 3s
mingw (MINGW32)	12m 24s
mingw (CLANG64)	1h 20m 27s
ubuntu (gcc with CUDA with OpenMP)	5m 56s
mingw (CLANG32)	1h 25m 8s
ubuntu (gcc without CUDA with OpenMP)	3m 11s
ubuntu (clang with CUDA with OpenMP)	7m 32s
ubuntu (clang without CUDA with OpenMP)	3m 18s
ubuntu (gcc without CUDA without OpenMP)	3m 36s
	4h 45m 12s

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