How do you prove two machines computed the same float32 result?

Question

Not approximately the same. Bit-identical. Across different hardware vendors, kernel versions, or driver stacks.Logs and weight checksums don't answer this. Looking for anyone who has a working production answer or has hit this wall.

a-dub · Accepted Answer

cast it to an integer and check for equality?requiring bit identical goes beyond what floats promise though.

How do you prove two machines computed the same float32 result?

Not approximately the same. Bit-identical. Across different hardware vendors, kernel versions, or driver stacks.
Logs and weight checksums don't answer this. Looking for anyone who has a working production answer or has hit this wall.

cast it to an integer and check for equality?
requiring bit identical goes beyond what floats promise though.