Merge pull request #534 from DrTimothyAldenDavis/singledev2 #648

Job	Run time
macos	56m 57s
ubuntu (gcc with CUDA with OpenMP)	5m 25s
mingw (MINGW64)	5m 17s
ubuntu (gcc without CUDA with OpenMP)	2m 24s
mingw (MINGW32)	7m 6s
msvc (with OpenMP)	5m 7s
mingw (CLANG64)	7m 42s
ubuntu (clang with CUDA with OpenMP)	4m 44s
msvc (without OpenMP)	5m 53s
mingw (CLANG32)	6m 29s
ubuntu (clang without CUDA with OpenMP)	2m 36s
ubuntu (gcc without CUDA without OpenMP)	2m 32s
	1h 52m 12s

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