SMG Test Server; loops 1 to 100; if mod 2
Ave1's GNAT; NB: NO SJLJ ; 
 
Loops (runs)    | No SJLJ	(s)  |	Serpent Timing                   | SJLJ (s)
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1 (a)  (1k runs)| 0.000168893  | 0.000168893 / (50^1) = 3.377e-6   |
2 (b)  (1k runs)| 0.007213758  | 0.007213758 / (50^2) = 2.8855e-6  |
3 (c)  (1k runs)| 0.351611073  | 0.351611073 / (50^3) = 2.81e-6    |
4 (d)  (1 run)  | 17.740324000 | 17.740324000 / (50^4) = 2.83e-6   |
5 (e)  (1 run)  | 879.951171000| 879.951171000 / (50^5) = 2.81e-6  |

SMG Test Server; loops 1 to 10; if mod 4 
Ave1's GNAT; NB: NO SJLJ ; 

Loops (runs=1)  | No SJLJ (s)  | Time per Serpent                  | SJLJ (s)     
1               | 0.000008     | 0.000008 / (2^1) = 4e-6           |
2               | 0.000017     | 0.000017 / (2^2) = 4.25e-6        |
3               | 0.000031     | 0.000031 / (2^3) = 3.875e-6       |
4               | 0.000046     | 0.000046 / (2^4) = 2.875e-6       |
5               | 0.00015      | 0.00015  / (2^5) = 4.6875e-6      |
10              | 0.02765      | 0.02765  / (2^10)= 2.7e-5         |
22              | 11.98272     | 11.98272 / (2^22)= 2.8569e-6      |


D1; loops 1 to 10; if mod 4 
Intel i5 3.2GHz, 4GB RAM
Adacore's 2016 GNAT; 
Loops (runs=1)  | No SJLJ (s)  | Time per Serpent                  | SJLJ (s)         | Time per Serpent
1               | 0.000009     | 0.000009 / (2^1) = 4.5e-6         | 
2               | 0.000023     | 0.000023 / (2^2) = 5.75e-6        |
3               | 0.000036     | 0.000036 / (2^3) = 4.5e-6         |
4               | 0.000083     | 0.000083 / (2^4) = 5.18e-6        |
5               | 0.000167     | 0.000167 / (2^5) = 5.218e-6       |
10              | 0.005537     | 0.005537 / (2^10)= 5.4e-6         |
22              | 8.007915     | 8.007915 / (2^22)= 1.909e-6       | 7.944913         | 7.944913 / (2^22) = 1.89e-6
22              | 7.971711     | 7.971711 / (2^22)= 1.9006e-6      | 7.966864         | 7.966864 / (2^22) = 1.899e-6

D1; loops 1 to 10; if mod 3 ; (NB: 1 run at few loops can get e.g. 8e-6 or 1.8e-5)
Intel i5 3.2GHz, 4GB RAM
Adacore's 2016 GNAT; 
Loops (runs=1)  | No SJLJ (s)  | Time per Serpent                  | SJLJ (s)         | Time per Serpent
1               | 0.000008     | 0.000008 / (3^1) = 2.6e-6         |
2               | 0.000017     | 0.000017 / (3^2) = 1.8e-6         |
3               | 0.000142     | 0.000142 / (3^3) = 1.75e-6        |
4               | 0.000427     | 0.000427 / (3^4) = 5.27e-6        |
5               | 0.001267     | 0.001267 / (3^5) = 5.21e-6        |
10              | 0.107943     | 0.107943 / (3^10) = 1.82e-6       |
15              | 27.163182    | 27.163182/ (3^15) = 1.89e-6       | 27.167316        | 27.167316 / (3^15)=1.89e-6
16              | 81.724382    | 81.724382/ (3^16) = 1.89e-6       | 81.951616        | 81.951616 / (3^16)=1.9e-6