I don’t really do GPU stuff, but I expect double to be at least 1/2 as slow as single, even on good hardware. I mean it is twice as many bits. (Maybe you think

I don’t really do GPU stuff, but I expect double to be at least 1/2 as slow as single, even on good hardware. I mean it is twice as many bits. (Maybe you think in bits/second, though, which is totally fair). I looked up my consumer card on a whim (playing with sprinkling some GPGPU into my code—cupy is actually really easy to use and ergonomic!), and apparently doubles are 1/32 as fast as singles. Yikes!