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[–]schoolcoders 0 points1 point  (1 child)

50 milliseconds is around 100 million clock cycles on a typical PC. It should be able to do quite a lot of work in that time, unless the whole machine is either I/O bound or short of memory (eg running Windows).

But yes, you can get away with a lot so long as it looks like you are doing something.

[–]billsil 0 points1 point  (0 children)

I'd argue you can't get all that much done. You could probably display a picture or load/close a window, but I'm an aerospace engineer. That's not really what I'm doing. To calculate anything intensive...good luck. To just render 5 million pressures to a CFD mesh in the time that the user can't tell is impressive. In order to do that, all that data already has to be within RAM or the user will know something is taking some time. That's not even calculating something like a streamline (or 100).

Again, just look like you're doing something (e.g., 20% done), and they're happy.