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 1.73 308,544 2213 3.98 64% 76% 45% 45%
OCaml 24.81 969,076 637 25.15 0% 1% 0% 100%
spectral-norm
source secs mem gz busy cpu load
Haskell GHC 4.05 3,900 987 15.74 97% 97% 97% 98%
OCaml 15.70 3,716 377 16.03 1% 1% 100% 0%
fasta
source secs mem gz busy cpu load
Haskell GHC 1.88 8,332 1998 4.80 64% 65% 64% 63%
OCaml 6.08 197,120 1189 6.17 0% 0% 1% 100%
pidigits
source secs mem gz busy cpu load
Haskell GHC 4.20 10,248 379 5.32 86% 9% 8% 23%
OCaml 6.74 20,004 458 6.96 1% 1% 100% 1%
mandelbrot
source secs mem gz busy cpu load
Haskell GHC 11.60 37,756 782 46.30 100% 100% 100% 100%
OCaml 13.75 4,916 717 54.88 100% 100% 100% 100%
n-body
source secs mem gz busy cpu load
Haskell GHC 21.96 4,160 1883 86.83 98% 99% 98% 100%
OCaml 21.69 1,496 1251 22.18 0% 100% 2% 0%
fannkuch-redux
source secs mem gz busy cpu load
Haskell GHC 18.12 4,264 842 71.41 96% 100% 100% 99%
OCaml 16.33 28,692 1017 65.22 100% 100% 100% 100%
binary-trees
source secs mem gz busy cpu load
Haskell GHC 13.52 493,528 592 50.12 92% 90% 92% 97%
OCaml 10.01 152,708 751 29.55 69% 87% 56% 83%
k-nucleotide
source secs mem gz busy cpu load
Haskell GHC 35.69 756,200 1486 126.21 88% 88% 87% 90%
OCaml 22.37 255,584 1833 62.55 49% 48% 89% 93%
reverse-complement
source secs mem gz busy cpu load
Haskell GHC 5.93 501,548 1020 7.92 100% 12% 10% 12%
OCaml 3.71 34,116 1368 8.66 65% 54% 54% 60%
Haskell GHC

The Glorious Glasgow Haskell Compilation System,
version 8.6.5

OCaml

The OCaml native-code compiler, version 4.08.0