non_differentiable gpu_device and cpu_device #135

Job	Run time
test (1.10, ubuntu-latest, conv, default, true)	16m 26s
downgrade	1h 17m 34s
test (1.10, ubuntu-latest, dense, default, true)	20m 13s
test (1.10, ubuntu-latest, normalization, default, true)	46m 18s
test (1.10, ubuntu-latest, misc, default, true)	35m 24s
test (1, ubuntu-latest, conv, default, true)	7m 43s
test (1, ubuntu-latest, dense, default, true)	7m 58s
test (1, ubuntu-latest, normalization, default, true)	7m 40s
test (1, ubuntu-latest, misc, default, true)	7m 42s
test (1.10, ubuntu-latest, dense, default, false)	16m 48s
test (1.10, ubuntu-latest, misc, default, false)	26m 47s
test (1.10, macos-latest, all, default, true)	5h 21m 49s
test (1.10, windows-latest, all, default, true)	1h 50m 33s
	11h 42m 55s

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