[HP35s] Benchmark of some operations

[fred_76]

(02-13-2019 10:57 AM)Leviset Wrote:  Out of interest - How are you measuring these?

I programmed a loop, and first manually measure the time taken by the empty loop (t0). I do this manually as the HP35s does'nt have internal timer.


The code is like that, nnn being the number of iterations (usually 1000) :

Code:


L001 LBL L
L002 nnn
L003 STO I
L004 (set of) instruction(s) to test
L005 DSE I
L006 GTO L004
L007 RTN

Then I just have to insert the instruction(s) to test in line 4, restart the test program and measure the time t1.

The time per (set of) instruction(s) is then 1000*(t1-t0)/nnn in ms.

I repeat this several times (especialy when t1-t0 < 10s) and take the shortest time measured.

It is quite precise, I calculated the time for the calculation of the prime number 99 999 999 977 using the algorithm shown here and found a theoretical value of 14'40", to be compared to the real time of 14'37".

Fred