The Computer Language
24.09 Benchmarks Game

C++ g++ versus C# aot fastest performance

How the programs are written matters! 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 seconds, less gz source code.

fannkuch-redux
source secs mem gz cpu secs
C# aot #8 2.14 19,680 1485 8.46
C++ g++ #6 3.26 19,712 1535 12.91
C++ g++ #7 13.96 19,712 1156 13.96
C# aot #2 31.02 19,680 584 31.03
C++ g++ #5 8.00 19,712 987 31.23
C# aot #9 8.99 19,680 1232 35.88
C++ g++ #4 9.26 19,688 1445 36.31
C# aot #6 9.14 19,680 1075 36.46
C++ g++ #3 36.90 19,688 600 36.90
C++ g++ #2 9.55 19,712 1446 37.53
C++ g++ 10.87 19,712 1065 42.73
C# aot #3 11.44 19,680 1117 45.24
C# aot #7   Bad Output  
n-body
source secs mem gz cpu secs
C++ g++ #0 2.15 19,736 1933 2.15
C# aot #9 3.09 19,696 2480 3.10
C# aot #4 3.68 19,684 2137 3.69
C++ g++ #7 3.96 19,736 1815 3.96
C++ g++ #2 4.20 19,736 1884 4.20
C# aot #7 4.74 19,696 1715 4.75
C# aot #6 4.76 19,696 1754 4.77
C++ g++ #3 5.31 19,736 1402 5.31
C++ g++ #9 5.44 19,736 1536 5.44
C++ g++ #4 5.45 19,736 1434 5.45
C++ g++ #5 6.02 19,736 1544 6.01
C++ g++ 6.50 19,736 1666 6.50
C++ g++ #8 6.54 19,736 1524 6.54
C# aot #3 6.69 19,696 1311 6.70
C++ g++ #6 6.91 19,736 1674 6.91
C# aot #2 6.98 19,696 1350 6.98
C# aot #8 6.98 19,696 1339 6.99
C# aot 7.59 19,696 1424 7.60
spectral-norm
source secs mem gz cpu secs
C++ g++ #6 0.72 19,884 1050 2.85
C# aot #5 0.74 19,728 776 2.89
C++ g++ #5 1.33 19,788 1050 5.27
C# aot 5.33 19,728 480 5.34
C++ g++ 5.37 19,852 459 5.37
C# aot #2 1.45 19,728 1084 5.70
C# aot #3 1.47 19,728 890 5.78
C++ g++ #8 1.52 19,820 1284 6.06
mandelbrot
source secs mem gz cpu secs
C++ g++ 0.89 34,944 1797 3.47
C++ g++ #4 0.89 35,328 3554 3.47
C++ g++ #6 0.98 35,072 1014 3.90
C++ g++ #0 2.36 35,456 2752 9.30
C# aot #7 2.96 35,840 915 11.79
C# aot #9 3.06 43,008 822 12.13
C# aot 3.05 43,008 1980 12.14
C++ g++ #8 4.84 34,944 749 13.21
C++ g++ #5 13.35 34,560 596 13.35
C++ g++ #9 3.50 35,072 732 13.49
C++ g++ #7 3.51 35,072 1023 13.94
C# aot #5 4.01 44,032 851 15.88
C++ g++ #2 16.94 34,560 700 16.94
C# aot #3 6.68 45,056 722 26.54
C++ g++ #3 27.27 19,736 421 27.27
C# aot #2 45.24 19,680 504 45.25
pidigits
source secs mem gz cpu secs
C++ g++ #5 0.87 19,736 804 0.87
C++ g++ #4 0.89 19,736 521 0.88
C# aot #6 0.89 19,696 1182 0.89
C# aot #4 5.45 19,696 1135 5.46
C# aot #7 6.34 29,272 579 6.82
C# aot #5 120.10 19,696 990 120.09
regex-redux
source secs mem gz cpu secs
C++ g++ #6 1.18 276,148 2856 2.23
C# aot #8 1.37 365,468 1881 2.58
C++ g++ 3.56 212,180 662 3.56
C++ g++ #2 2.86 212,648 706 3.62
C++ g++ #5 3.81 215,648 859 4.53
C# aot 12.32 817,792 641 12.34
C# aot #5 3.96 831,232 679 13.24
C++ g++ #3 12.46 215,472 859 18.08
C# aot #4 9.01 928,896 854 31.21
C++ g++ #4   Make Error  
fasta
source secs mem gz cpu secs
C# aot #9 1.15 19,988 1512 1.16
C++ g++ #8 0.78 19,712 2758 1.54
C++ g++ #2 1.80 19,712 1129 1.80
C++ g++ 1.90 19,712 1064 1.90
C++ g++ #3 2.62 19,712 1311 2.62
C++ g++ #4 3.34 19,712 1291 3.34
C++ g++ #5 1.07 19,712 2345 3.67
C++ g++ #6 1.07 19,712 2326 3.85
C# aot #5 1.08 80,000 1702 4.20
C# aot 1.40 29,824 2113 5.18
C++ g++ #7   Make Error  
k-nucleotide
source secs mem gz cpu secs
C++ g++ #2 2.02 156,512 1634 6.09
C# aot 3.13 161,152 2046 11.18
C# aot #6 5.38 163,244 1615 13.75
C++ g++ #3 4.18 165,384 1280 13.93
C++ g++ 7.10 757,084 1452 14.78
C# aot #7 42.20 737,372 1449 42.57
C# aot #4 11.69 752,004 1725 42.67
reverse-complement
source secs mem gz cpu secs
C++ g++ #2 0.71 499,712 2099 0.71
C# aot #7 1.30 909,056 1312 3.62
C# aot 3.49 777,932 1130 3.66
C# aot #6 1.67 1,006,336 1627 4.06
C++ g++ #6 3.26 1,517,580 1827 4.32
C# aot #5 2.92 1,003,520 1620 4.60
C++ g++ 6.50 979,912 599 6.50
C# aot #3 7.90 1,549,580 934 11.73
C++ g++ #5 36.24 771,432 704 36.24
C# aot #8   Bad Output  
C++ g++ #3   Bad Output  
binary-trees
source secs mem gz cpu secs
C++ g++ #7 0.96 201,536 896 3.35
C++ g++ #5 1.15 200,660 891 4.08
C++ g++ #9 1.65 136,064 815 4.55
C++ g++ #6 1.92 266,112 851 4.74
C++ g++ #3 2.25 265,600 951 5.11
C++ g++ #8 2.22 266,112 826 5.26
C++ g++ 2.68 2,068,612 760 9.34
C# aot #3 4.46 2,022,536 688 14.37
C# aot #2 4.49 1,657,924 717 14.75
C# aot #7 4.55 1,674,128 706 14.79
C# aot 4.60 1,811,480 668 15.44
C++ g++ #2 21.96 265,856 514 21.96
C# aot #8   Make Error  
C++ g++ #4   Make Error  
C++ g++

Ubuntu 13.2.0-23ubuntu4

C# aot

.NET SDK 8.0.301
Host Version: 8.0.6
Commit: 3b8b000a0e

<OutputType>Exe
<TargetFramework>net8.0
<ImplicitUsings>enable
<Nullable>enable
<AllowUnsafeBlocks>true
<ServerGarbageCollection>true
<ConcurrentGarbageCollection>true
<PublishAot>true
<OptimizationPreference>Speed
<IlcInstructionSet>native