The Computer Language
25.03 Benchmarks Game

C++ g++ versus C# naot

How the programs are written matters! Always look at the source code.

If the fastest programs are flagged * possible hand-written vector instructions or "unsafe" or naked ffi, does the host language matter? You might be more interested in the less optimised programs — more seconds, less gz source code.

fannkuch-redux      
  elapsed Mean or 95% CI      
source secs cpu secs mem gz make
* C# naot #5 2.16 8.58 6,713 1485 24.43
* C++ g++ #6 3.33 13.12 5,800 1535 4.64
* C++ g++ #7 14.06 14.04—14.11 2,449 1156 2.95
C++ g++ #5 7.86 30.73—30.82 5,792 987 3.67
C# naot #2 31.30 31.29 6,001 584 23.80
* C# naot #9 8.11 32.35 6,377 1232 25.65
C++ g++ #4 8.91 34.99—35.47 5,710 1445 12.14
C++ g++ #2 9.14 35.88—36.26 5,698 1446 11.86
C++ g++ #3 37.89 37.90—37.99 2,351 600 2.70
C# naot #6 10.14 40.45—40.53 6,799 1075 24.13
C++ g++ 10.53 41.25—41.55 5,534 1065 3.88
C# naot #3 11.01 43.53—43.61 6,472 1117 23.77
C# naot #8 44.63 44.63 6,091 519 24.31
n-body      
  elapsed Mean or 95% CI      
source secs cpu secs mem gz make
* C++ g++ #0 2.15 2.16 2,417 1933 3.66
* C# naot #9 3.13 3.12 6,087 2480 24.34
* C# naot #4 3.70 3.70 6,078 2137 24.03
* C++ g++ #7 4.09 4.12—4.17 5,124 1815 4.18
* C# naot #7 4.74 4.74 6,091 1715 23.78
* C# naot #6 4.77 3.92—6.97 6,115 1754 23.74
C++ g++ #9 5.15 5.17 2,486 1536 3.03
C++ g++ #3 5.33 5.34 2,482 1402 2.85
* C++ g++ #4 5.46 5.46 2,482 1434 2.83
C++ g++ #2 6.02 6.02—6.10 2,490 1524 3.04
C++ g++ #5 6.33 6.35 2,478 1544 2.92
C++ g++ 6.62 6.64 2,499 1666 3.15
C# naot #3 6.67 6.65—6.70 6,095 1311 23.76
C# naot #2 6.81 6.81 5,898 1339 24.15
C++ g++ #6 6.94 6.93—6.98 2,499 1674 2.98
C# naot #8 7.02 7.01 5,833 1335 23.65
C# naot #0 7.46 7.46 6,107 1342 23.74
C# naot 7.46 7.45 6,124 1424 24.21
spectral-norm      
  elapsed Mean or 95% CI      
source secs cpu secs mem gz make
* C++ g++ #6 0.72 2.86 3,981 1050 3.08
* C# naot #5 0.74 2.88 8,057 776 24.00
* C++ g++ #5 1.33 5.28 5,820 1050 2.86
C++ g++ 5.34 5.34 5,292 459 3.75
C# naot #8 5.35 5.34 6,820 441 24.29
C# naot #2 1.47 5.72 6,644 1084 24.38
C# naot #3 1.48 5.80 6,808 890 23.72
C++ g++ #7 1.53 6.07 4,071 1284 2.71
mandelbrot      
  elapsed Mean or 95% CI      
source secs cpu secs mem gz make
* C++ g++ #4 0.89 3.46 37,941 3554 5.04
* C++ g++ 0.90 3.48 37,626 1797 3.59
* C++ g++ #6 0.98 3.87 37,908 1014 4.36
C++ g++ #0 2.36 9.31 38,281 2752 4.60
* C# naot #7 2.96 11.74 39,088 915 24.73
C++ g++ #7 4.87 13.30 38,048 749 3.03
C++ g++ #5 13.47 13.49 36,884 596 2.76
C++ g++ #9 3.53 13.59 37,863 732 3.03
* C# naot #9 3.77 14.95 38,797 822 27.91
* C# naot 3.76 14.95 39,240 1980 24.86
C# naot #5 4.02 15.90 40,743 851 27.06
C++ g++ #2 16.96 16.96 36,704 700 3.28
C# naot #8 25.58 25.55—25.66 6,115 492 24.73
C# naot #3 6.69 26.53 39,715 722 24.95
C++ g++ #3 27.38 27.38 5,181 421 3.69
C# naot #2 47.60 47.84—48.30 6,148 504 24.02
fasta      
  elapsed Mean or 95% CI      
source secs cpu secs mem gz make
C# naot #9 1.16 1.16 6,218 1512 24.53
* C++ g++ #9 0.78 1.56 6,214 2758 6.43
C++ g++ #2 1.85 1.85 5,108 1129 2.89
C++ g++ 1.93 1.93 5,104 1064 2.98
C++ g++ #3 2.63 2.63 5,284 1311 3.33
C++ g++ #7 0.88 3.06 6,304 2711 4.58
C++ g++ #4 3.34 3.34 2,363 1291 3.03
C++ g++ #5 1.07 3.69—3.73 7,012 2345 3.90
C++ g++ #6 1.08 3.90 7,127 2326 3.72
C# naot #5 1.14 4.34—4.48 34,853 1702 24.14
C# naot 1.61 5.65—5.71 11,055 2113 24.61
C# naot #8 6.60 6.30 8,823 904 23.99
k-nucleotide      
  elapsed Mean or 95% CI      
source secs cpu secs mem gz make
C++ g++ #2 2.02 6.05—6.54 162,349 1634 7.41
C# naot 3.12 10.70—10.91 160,424 2046 27.36
C# naot #6 5.02 13.07—13.88 158,015 1615 26.90
C++ g++ #3 4.19 13.83—14.44 171,622 1280 5.17
C++ g++ 7.04 15.17—15.69 778,510 1452 6.55
C# naot #4 13.01 45.70—45.82 523,211 1725 27.45
C# naot #7 48.00 48.44—48.60 593,142 1449 23.68
C# naot #8 83.91 75.78—77.28 1,354,269 736 24.68
reverse-complement      
  elapsed Mean or 95% CI      
source secs cpu secs mem gz make
* C++ g++ #2 0.76 0.76 514,101 2099 4.30
C# naot 3.37 3.40—3.44 637,997 1130 24.13
C# naot #5 2.74 3.76 1,027,035 1620 24.63
C# naot #7 1.56 4.14—4.23 774,136 1312 23.76
C# naot #6 1.81 4.27—4.31 1,029,992 1627 24.50
C++ g++ 6.55 6.55—6.68 1,006,805 599 3.43
C# naot #3 8.76 13.32—13.49 1,236,947 934 23.97
C++ g++ #5 37.66 37.65—37.69 792,846 704 3.40
* C# naot #9   Bad Output  
C++ g++ #6   Bad Output  
C++ g++ #3   Bad Output  
binary-trees      [ Contentious. Different approaches. ]
  elapsed Mean or 95% CI      
source secs cpu secs mem gz make
C++ g++ #7 1.01 3.46—3.62 175,108 896 7.50
C++ g++ #5 1.17 4.12—4.17 208,171 891 3.87
C++ g++ #9 1.76 4.66—4.82 140,571 815 4.05
C++ g++ #6 1.93 4.90—5.09 273,973 851 4.98
C++ g++ #3 2.28 5.06—5.10 273,715 951 4.79
C++ g++ #4 2.22 5.20—5.33 273,977 826 5.16
C++ g++ 2.69 9.43—9.52 1,896,727 760 5.34
C# naot #7 6.22 17.09—17.67 1,115,476 706 23.97
C# naot #2 6.22 17.12—17.72 1,018,946 717 23.74
C# naot #3 6.71 18.09—18.62 2,829,128 688 23.94
C# naot 6.80 18.92—19.25 2,819,092 668 24.30
C++ g++ #2 22.77 22.81—23.05 274,080 514 3.52
C# naot #6   Empty  
pidigits      [ Contentious. Different libraries. ]
  elapsed Mean or 95% CI      
source secs cpu secs mem gz make
C++ g++ #4 0.72 0.72 6,496 521 3.45
* C++ g++ #5 0.73 0.73 6,300 804 3.34
* C# naot #6 0.75 0.75 7,905 1182 23.89
* C# naot #4 4.54 4.53 8,053 1135 28.23
C# naot #7 11.42 8.23—9.42 11,723 579 24.08
* C# naot #5 99.09 99.08—99.12 8,466 990 24.29
regex-redux      [ Contentious. Different libraries. ]
  elapsed Mean or 95% CI      
source secs cpu secs mem gz make
C++ g++ #6 1.14 2.25 285,639 2856 5.06
* C# naot #2 1.36 2.55 320,512 1881 25.36
C# naot 10.69 10.70—10.79 582,550 641 27.07
C# naot #5 3.25 10.73—10.77 596,599 679 26.47
C++ g++ #3 12.37 18.03—18.68 222,614 859 12.29
C# naot #4 9.81 32.95—33.06 743,510 854 26.94
C++ g++   Empty  
C++ g++ #2   Empty  
C++ g++ #5   Empty  
C++ g++ #4   Empty  
C++ g++

g++ (Ubuntu 14.2.0-4ubuntu2) 14.2.0

C# naot

.NET SDK 9.0.100
Host Version: 9.0.0
Commit: 9d5a6a9aa4

<OutputType>Exe
<TargetFramework>net9.0
<ImplicitUsings>enable
<Nullable>enable
<AllowUnsafeBlocks>true
<ServerGarbageCollection>true
<ConcurrentGarbageCollection>true
<PublishAot>true
<OptimizationPreference>Speed
<IlcInstructionSet>native