The Computer Language
Benchmarks Game

Haskell GHC versus OCaml fastest programs

Back in April 2010, Russ Cox charitably suggested that only fannkuch-redux, fasta, k-nucleotide, mandlebrot, nbody, reverse-complement and spectral-norm were close to fair comparisons. As someone who implemented programming languages, his interest was "measuring the quality of the generated code when both compilers are presented with what amounts to the same program."

Differences in approach - to memory management, parallel programming, regex, arbitrary precision arithmetic, implementation technique - don't fit in that kind-of fair comparison — but we still have to deal with them.

These are only the fastest programs. There may be additional measurements for programs which seem more-like a fair comparison to you. Always look at the source code.

regex-redux
source secs mem gz busy cpu load
Haskell GHC 1.78 307,992 2213 4.35 79% 50% 50% 65%
OCaml 25.43 969,092 637 25.60 100% 0% 0% 0%
fasta
source secs mem gz busy cpu load
Haskell GHC 1.40 7,992 1882 4.15 75% 74% 75% 74%
OCaml 6.11 202,384 1189 6.22 0% 100% 1% 1%
spectral-norm
source secs mem gz busy cpu load
Haskell GHC 4.10 4,012 987 15.83 97% 97% 99% 95%
OCaml 15.70 3,744 377 16.33 1% 3% 0% 100%
mandelbrot
source secs mem gz busy cpu load
Haskell GHC 4.87 36,328 1975 19.39 99% 100% 100% 99%
OCaml 13.84 5,004 717 55.24 100% 100% 100% 100%
pidigits
source secs mem gz busy cpu load
Haskell GHC 4.22 9,964 585 5.27 8% 100% 9% 9%
OCaml 6.74 20,108 458 7.00 1% 3% 100% 0%
n-body
source secs mem gz busy cpu load
Haskell GHC 21.87 4,364 1883 86.49 99% 100% 99% 98%
OCaml 21.68 1,556 1251 21.91 0% 1% 0% 100%
fannkuch-redux
source secs mem gz busy cpu load
Haskell GHC 18.37 4,352 842 72.54 96% 100% 100% 100%
OCaml 16.39 28,836 1017 65.51 100% 100% 100% 100%
binary-trees
source secs mem gz busy cpu load
Haskell GHC 12.96 476,448 592 47.98 92% 92% 93% 94%
OCaml 9.84 152,916 751 29.09 84% 43% 99% 69%
k-nucleotide
source secs mem gz busy cpu load
Haskell GHC 35.91 637,624 1486 125.59 86% 86% 86% 91%
OCaml 22.37 255,604 1833 61.94 40% 97% 46% 94%
reverse-complement
source secs mem gz busy cpu load
Haskell GHC 6.42 501,528 1020 9.38 14% 100% 16% 16%
OCaml 3.78 33,952 1368 8.78 60% 55% 58% 60%
Haskell GHC

The Glorious Glasgow Haskell Compilation System,
version 8.8.1

OCaml

The OCaml native-code compiler, version 4.09.0