The Computer Language
22.05 Benchmarks Game

Fastest cpu secs Ada 2012 GNAT versus C++ g++

Always look at the source code.

If the fastest programs are hand-written vector instructions, does the host language matter? You might be more interested in the less optimised programs — more cpu seconds, less gz source code.

fannkuch-redux
source mem gz cpu
C++ g++ #6 2,000 1528 12.93
C++ g++ #7 992 1150 13.89
C++ g++ #5 2,000 980 29.40
Ada 2012 GNAT #3 4,872 2113 32.71
C++ g++ #4 2,216 1439 40.52
C++ g++ #3 988 593 40.55
C++ g++ #2 2,224 1440 42.64
C++ g++ 2,164 1059 42.76
n-body
source mem gz cpu
C++ g++ #0 964 1927 2.17
C++ g++ #2 1,944 1879 4.06
C++ g++ #7 1,976 1808 4.28
C++ g++ #9 1,260 1530 4.90
C++ g++ #6 1,300 1668 5.65
C++ g++ #4 1,040 1428 5.68
Ada 2012 GNAT #2 2,540 2617 5.72
C++ g++ #3 1,280 1396 5.74
Ada 2012 GNAT 2,544 1618 5.91
C++ g++ 1,260 1659 5.93
Ada 2012 GNAT #3 2,560 1750 5.97
C++ g++ #8 1,220 1517 6.08
C++ g++ #5 1,944 1749 6.11
Ada 2012 GNAT #5 2,588 2447 8.92
spectral-norm
source mem gz cpu
C++ g++ #6 1,348 1044 2.85
Ada 2012 GNAT #4 4,832 2770 2.95
C++ g++ #5 2,048 1044 5.26
Ada 2012 GNAT 2,544 716 5.36
C++ g++ 1,964 452 5.36
Ada 2012 GNAT #3 4,752 1717 5.72
C++ g++ #8 1,348 1278 6.09
mandelbrot
source mem gz cpu
C++ g++ #4 34,720 3542 3.27
C++ g++ 32,336 1791 3.48
C++ g++ #6 31,792 1002 3.88
C++ g++ #0 34,712 2739 4.06
C++ g++ #8 34,448 742 13.19
C++ g++ #5 33,640 590 13.37
C++ g++ #9 34,428 726 13.48
C++ g++ #7 34,392 1017 13.92
Ada 2012 GNAT #3 36,256 1819 15.82
C++ g++ #2 34,176 692 17.47
Ada 2012 GNAT #2 2,524 577 28.41
C++ g++ #3 1,976 414 28.53
pidigits
source mem gz cpu
C++ g++ #4 4,220 513 0.71
C++ g++ #5 4,284 798 0.72
Ada 2012 GNAT #2 5,176 1130 0.74
Ada 2012 GNAT 5,380 1157 4.48
regex-redux
source mem gz cpu
C++ g++ #6 275,924 2850 2.20
C++ g++ #4 203,888 1315 3.39
C++ g++ 207,788 656 3.57
C++ g++ #2 198,316 700 3.69
C++ g++ #5 214,888 852 4.28
Ada 2012 GNAT #5 154,816 3640 12.23
C++ g++ #3 217,248 853 18.28
Ada 2012 GNAT #6   Bad Output  
fasta
source mem gz cpu
C++ g++ #8 2,720 2751 1.52
C++ g++ #2 2,004 1127 1.85
C++ g++ 2,000 1057 1.97
Ada 2012 GNAT #5 2,584 2221 2.57
C++ g++ #3 1,964 1307 2.62
Ada 2012 GNAT #2 2,496 2153 2.63
C++ g++ #4 1,016 1287 3.36
C++ g++ #5 4,540 2344 3.75
C++ g++ #6 4,564 2324 3.89
Ada 2012 GNAT 2,528 1379 6.24
C++ g++ #7   Make Error  
k-nucleotide
source mem gz cpu
C++ g++ #2 156,416 1631 5.92
Ada 2012 GNAT #2 258,980 4908 13.87
C++ g++ #3 165,588 1276 14.14
C++ g++ 756,320 1446 14.54
reverse-complement
source mem gz cpu
C++ g++ #2 499,708 2093 0.64
Ada 2012 GNAT #2 786,180 3283 2.37
C++ g++ #3 500,008 840 2.62
C++ g++ #6 1,513,136 1832 4.00
C++ g++ 979,988 592 6.34
Ada 2012 GNAT 515,456 937 12.46
C++ g++ #5 765,148 720 34.88
binary-trees
source mem gz cpu
C++ g++ #7 168,192 890 3.38
C++ g++ #5 200,020 885 4.10
C++ g++ #9 135,652 809 4.16
C++ g++ #3 265,220 945 4.65
C++ g++ #6 265,784 844 4.72
C++ g++ #8 265,808 820 5.05
C++ g++ 1,947,704 754 8.99
Ada 2012 GNAT #4 203,012 2107 10.20
Ada 2012 GNAT 266,008 888 21.99
C++ g++ #2 265,180 508 22.61
Ada 2012 GNAT #3 528,532 1266 34.15
C++ g++ #4   Make Error  
Ada 2012 GNAT

GNAT 11.2.0

C++ g++

11.2.0-19ubuntu1