Summation based benchmark for calculators

[ttw]

I tried the sum of the cube root of the exponential of the arctangent of the sine of N (I think) on my HP Omen Laptop (last year's model). I wrote it in Silverfrost Fortran in debugging mode as I can't get Emu48 to work on Windows 10.

Loop limit, 100,000,000. Timer 12 secs. Assuming about 5 flops per function (or so) this seems about 3 times faster than the Cray-1 from 1975. A bit slower than the 1982 Cray XMP which had 1 gig SSD. Memory was smaller though about 64 megabyte.

The problem with high-speed computing isn't in building high-speed CPUs; the problem is feeding them. We used to tell buyers that a $32,000,000 computer had a $1,000,000 CPU, a $1,000,000 Memory and a $30,000,000 switching network.