[Simh] performance of the emulated VAX on different hosts

[Tim Shoppa]

The official VUPS benchmark is DEC-internal.  In the 80's and early
90's, Digital Review published a benchmark suite that measured
"MVUPS" ("Microvax II Units of Performance") on a rather wide range of machines,
with the assumptions that 1 MVUP = 0.9 VUPS or so, justifying the Microvax
aspect with the fact that at that date, there were a whole lot more Microvax II's
out there than 11/780's and thus it was a more relevant measurement.

The VUP baseline is a 11/780 with a specific (Massbus I believe) set of disk
drives and memory and a specific oldish version of VMS and compiler.  Running
the same 11/780 with faster disks and newer and better compilers lets you
think that a 11/780 is more than 1 VUP :-).

I think I may have saved a copy of the DR MVUPS benchmark suite somewhere.
Many of the individual tests were floating-point intense, and I have the gut
feeling that most VAX users today don't care all that much about FP, but
in running it you get all the numbers for each individual benchmark.

Most of us still called them "Vague Units of Performance" :-).

Tim.