There are some bits that can make that a bit tricky.

• Are the CPUs/GPUs under full load?
• How efficient is the code being run?
• How many CPUs are in a given server?

I can definitely come up with an upper bound. Finding an automatic way to lookup the FLOPS for the different components might take some time, but even if I have to to the top 30 or so by hand it is still possible.

It can be my next project.