The Computer Language
22.05 Benchmarks Game

Fastest cpu secs C# .NET 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# .NET #8 33,148 1473 8.28
C++ g++ #6 2,000 1528 12.93
C++ g++ #7 992 1150 13.89
C++ g++ #5 2,000 980 29.40
C# .NET #9 32,836 1225 34.63
C# .NET #6 32,152 1068 39.27
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
C# .NET #7   Bad Output  
n-body
source mem gz cpu
C++ g++ #0 964 1927 2.17
C# .NET #9 33,528 2467 3.17
C# .NET #4 33,456 2125 3.83
C++ g++ #2 1,944 1879 4.06
C++ g++ #7 1,976 1808 4.28
C# .NET #7 33,644 1704 4.78
C# .NET #6 33,932 1742 4.80
C++ g++ #9 1,260 1530 4.90
C++ g++ #6 1,300 1668 5.65
C++ g++ #4 1,040 1428 5.68
C++ g++ #3 1,280 1396 5.74
C++ g++ 1,260 1659 5.93
C++ g++ #8 1,220 1517 6.08
C++ g++ #5 1,944 1749 6.11
C# .NET #3 34,000 1305 6.90
C# .NET #2 33,984 1343 7.03
C# .NET #8 33,996 1332 7.03
spectral-norm
source mem gz cpu
C++ g++ #6 1,348 1044 2.85
C# .NET #5 35,524 764 2.97
C++ g++ #5 2,048 1044 5.26
C++ g++ 1,964 452 5.36
C# .NET #3 33,368 878 5.78
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# .NET 66,656 1974 12.16
C# .NET #9 66,528 816 12.17
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
C# .NET #5 64,376 839 16.15
C++ g++ #2 34,176 692 17.47
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
C# .NET #6 33,768 1168 0.78
C# .NET #5 35,888 977 0.83
C# .NET #4 32,828 1121 1.27
C# .NET #7 53,276 567 8.41
regex-redux
source mem gz cpu
C++ g++ #6 275,924 2850 2.20
C# .NET #8 319,484 1869 2.65
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
C# .NET #5 1,061,452 673 7.45
C++ g++ #3 217,248 853 18.28
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
C++ g++ #3 1,964 1307 2.62
C++ g++ #4 1,016 1287 3.36
C++ g++ #5 4,540 2344 3.75
C++ g++ #6 4,564 2324 3.89
C# .NET #5 85,788 1691 4.43
C# .NET 51,376 2098 5.16
C++ g++ #7   Make Error  
k-nucleotide
source mem gz cpu
C++ g++ #2 156,416 1631 5.92
C# .NET 185,200 2044 10.97
C++ g++ #3 165,588 1276 14.14
C++ g++ 756,320 1446 14.54
C# .NET #6 180,876 1603 15.87
reverse-complement
source mem gz cpu
C++ g++ #2 499,708 2093 0.64
C# .NET #8 930,564 2637 1.25
C++ g++ #3 500,008 840 2.62
C# .NET #6 1,029,352 1621 3.79
C++ g++ #6 1,513,136 1832 4.00
C# .NET #5 1,032,176 1613 4.02
C# .NET #7 979,712 1310 5.13
C++ g++ 979,988 592 6.34
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
C# .NET #7 1,609,712 694 15.29
C# .NET #3 1,964,552 676 15.35
C# .NET #2 1,475,276 705 15.77
C# .NET 1,691,664 657 16.14
C++ g++ #2 265,180 508 22.61
C++ g++ #4   Make Error  
C# .NET

.NET SDK 6.0.101
Host Version: 6.0.1;
Commit: 3a25a7f1cc
<ServerGarbageCollection>true

C++ g++

11.2.0-19ubuntu1