The Computer Language
24.11 Benchmarks Game

C clang versus OCaml 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 clang #6 2.24 19,772 1582 8.86
* C clang #4 13.37 19,772 1190 13.37
C clang #5 8.09 19,772 917 31.94
* C clang #2 8.67 19,772 1563 34.02
C clang #3 34.16 19,772 574 34.15
OCaml #3 8.80 19,676 1024 35.18
C clang #8 36.39 19,492 483 36.38
OCaml #4 9.13 19,676 1018 36.46
C clang 36.51 19,772 514 36.50
OCaml #2 45.76 19,676 478 45.76
OCaml 51.25 19,676 529 51.25
n-body
source secs mem gz cpu secs
* C clang #9 2.20 19,772 1639 2.20
* C clang #5 4.86 19,772 1436 4.86
C clang #6 5.16 19,772 1186 5.16
C clang 5.37 19,772 1179 5.37
C clang #2 5.42 19,772 1270 5.42
* C clang #4 5.60 19,772 1398 5.59
C clang #8 5.72 19,492 1193 5.72
C clang #3 6.12 19,772 1214 6.12
C clang #7 6.77 19,772 1250 6.77
OCaml 6.94 19,676 1255 6.94
spectral-norm
source secs mem gz cpu secs
* C clang #6 0.38 19,772 1203 1.52
* C clang #4 0.72 19,772 1145 2.86
* C clang #2 0.72 19,772 941 2.87
* C clang #5 0.72 19,772 576 2.88
OCaml #2 5.32 19,676 383 5.32
C clang #8 5.40 19,772 389 5.40
C clang #3 1.46 19,772 470 5.77
* C clang #7 1.82 19,772 906 7.24
mandelbrot
source secs mem gz cpu secs
C clang #9 1.22 34,332 700 4.85
C clang #5 1.53 34,864 788 6.09
* C clang #4 3.47 34,328 805 13.82
* C clang 3.49 33,172 828 13.93
* C clang #7 3.53 34,216 1000 14.00
* C clang #3 3.55 33,108 769 14.15
C clang #8 25.27 19,496 412 25.27
OCaml #6 28.76 19,676 450 28.76
OCaml 7.59 19,676 723 30.20
* C clang #6   Make Error  
fasta
source secs mem gz cpu secs
C clang #3 0.78 19,772 1469 0.78
C clang #5 1.20 19,772 1286 1.20
C clang #2 2.43 19,616 1299 2.43
C clang #6 1.03 19,772 1936 3.03
C clang #7 0.82 19,772 2276 3.27
OCaml #6 3.36 201,984 1194 3.36
C clang 3.46 19,772 1213 3.46
C clang #8 4.61 19,616 825 4.60
OCaml #3 4.71 19,676 1075 4.71
C clang #4   Make Error  
k-nucleotide
source secs mem gz cpu secs
C clang 6.30 129,228 1512 13.92
* OCaml #3 16.29 258,556 1839 43.41
* OCaml 45.59 338,436 894 45.59
* OCaml #2 27.45 314,312 1247 61.90
reverse-complement
source secs mem gz cpu secs
* C clang #7 0.45 499,996 1899 0.63
C clang #9 0.46 499,976 1551 0.70
C clang #2 1.16 994,536 757 1.69
C clang #5 2.08 994,108 654 2.07
* C clang #4 3.74 500,452 716 3.74
C clang #6 1.03 703,416 828 4.07
* OCaml 2.25 19,676 1372 5.09
OCaml #3 2.28 19,676 1361 5.77
OCaml #2 9.27 909,056 426 9.27
binary-trees
source secs mem gz cpu secs
C clang #2 1.66 170,236 816 5.36
C clang #3 1.89 134,272 842 5.88
OCaml #5 7.80 221,952 468 7.80
OCaml #2 3.59 216,628 759 10.35
C clang 17.79 264,064 660 17.79
C clang #8 19.63 285,536 607 19.62
C clang #5 9.25 351,328 914 33.65
pidigits
source secs mem gz cpu secs
C clang #2 0.74 19,772 422 0.74
C clang 0.74 19,772 459 0.74
OCaml #5 2.75 19,676 465 2.75
OCaml #7   Make Error  
regex-redux
source secs mem gz cpu secs
C clang #5 0.82 154,568 1403 2.82
C clang #2 3.22 103,364 1121 3.22
* OCaml #3 2.20 451,620 653 3.35
C clang #4 0.98 154,488 1237 3.82
C clang #3 1.75 105,848 1273 4.31
* OCaml #2 13.99 922,636 644 13.99
C clang

Ubuntu clang version 18.1.8 (11)

OCaml

OCaml native-code
5.4.0+dev0-2024-08-25