Haskell GHC versus OCaml fastest programs Always look at the source code. These are only the fastest programs. Look at the other programs. They may seem more-like a fair comparison to you. regex-redux source secs mem gz busy cpu load Haskell GHC 1.78 307,992 2213 4.35 79% 50% 50% 65% OCaml 25.15 901,868 637 25.44 1% 1% 100% 0% fasta source secs mem gz busy cpu load Haskell GHC 1.40 7,992 1882 4.15 75% 74% 75% 74% OCaml 6.00 199,380 1189 6.04 1% 0% 100% 0% 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 3,712 377 15.99 1% 1% 100% 0% mandelbrot source secs mem gz busy cpu load Haskell GHC 4.87 36,328 1975 19.39 99% 100% 100% 99% OCaml 13.82 5,024 717 55.17 100% 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 11.04 19,504 458 11.19 0% 91% 10% 0% n-body source secs mem gz busy cpu load Haskell GHC 21.87 4,364 1883 86.49 99% 100% 99% 98% OCaml 21.67 1,484 1251 22.30 0% 1% 100% 2% fannkuch-redux source secs mem gz busy cpu load Haskell GHC 18.37 4,352 842 72.54 96% 100% 100% 100% OCaml 16.12 19,552 1004 64.43 100% 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 9.90 152,988 751 28.24 82% 87% 43% 73% k-nucleotide source secs mem gz busy cpu load Haskell GHC 35.91 637,624 1486 125.59 86% 86% 86% 91% OCaml 21.77 255,576 1833 60.14 43% 43% 90% 100% reverse-complement source secs mem gz busy cpu load Haskell GHC 6.42 501,528 1020 9.38 14% 100% 16% 16% OCaml 3.83 33,784 1368 9.03 55% 65% 54% 63% Haskell GHC The Glorious Glasgow Haskell Compilation System, version 8.8.1 OCaml The OCaml native-code compiler, version 4.10.0 all Haskell GHC programs & measurements all OCaml programs & measurements