Ada 2012 GNAT versus Rust fastest performance 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 Rust #6 4.00 19,652 1260 15.86 Rust #4 7.10 19,652 1026 27.94 Rust #5 7.88 19,784 1023 30.85 Ada 2012 GNAT #3 8.21 19,784 2120 32.46 Rust #2 18.53 19,780 1198 73.32 n-body source secs mem gz cpu secs Rust #9 2.20 19,660 1881 2.20 Rust #7 3.13 19,660 1759 3.13 Rust #2 3.92 19,660 1809 3.92 Rust #6 3.95 19,788 1796 3.95 Rust #8 4.51 19,788 1774 4.50 Rust #5 5.06 19,788 2224 5.06 Rust #4 5.21 19,660 1810 5.21 Rust 5.51 19,660 1483 5.51 Rust #3 5.60 19,656 1546 5.60 Ada 2012 GNAT #2 5.74 19,840 2623 5.74 Ada 2012 GNAT #3 5.82 19,712 1758 5.82 Ada 2012 GNAT 5.83 19,712 1624 5.83 Ada 2012 GNAT #5 8.99 19,712 2452 8.98 spectral-norm source secs mem gz cpu secs Rust #2 0.72 19,668 1117 2.58 Rust 0.74 19,668 1262 2.60 Rust #3 0.79 19,796 1060 2.83 Rust #6 0.72 19,668 1132 2.84 Rust #4 0.72 19,796 823 2.85 Rust #7 0.72 19,796 938 2.85 Rust #5 0.72 19,668 1062 2.85 Ada 2012 GNAT #4 0.75 19,844 2777 2.85 Ada 2012 GNAT 5.36 19,716 725 5.35 Ada 2012 GNAT #3 1.47 19,844 1725 5.72 mandelbrot source secs mem gz cpu secs Rust #4 0.96 33,280 1301 3.78 Rust #6 1.07 34,048 1338 4.20 Rust #8 1.06 33,280 770 4.21 Rust #7 1.06 33,280 763 4.21 Rust #5 1.12 33,920 725 4.40 Rust #3 1.14 19,656 1013 4.51 Rust 1.83 39,296 874 7.20 Ada 2012 GNAT #3 3.92 36,736 1825 15.43 Ada 2012 GNAT #2 28.26 19,712 583 28.26 pidigits source secs mem gz cpu secs Rust #4 0.71 19,660 804 0.71 Rust 0.88 19,660 1426 0.88 Rust #3 0.88 19,660 1373 0.88 Rust #2 0.88 19,660 1312 0.88 Ada 2012 GNAT #2 0.88 19,712 1137 0.88 Ada 2012 GNAT 5.36 19,712 1163 5.36 regex-redux source secs mem gz cpu secs Rust #6 1.19 153,584 994 1.44 Rust #5 1.28 202,584 777 1.52 Rust 1.30 154,416 811 1.52 Rust #4 1.30 199,540 771 1.54 Rust #3 1.31 202,684 726 1.56 Rust #2 1.34 153,896 707 1.58 Rust #7 0.78 150,272 2464 1.99 Ada 2012 GNAT #5 4.90 152,628 3647 13.63 Ada 2012 GNAT #6 Bad Output fasta source secs mem gz cpu secs Rust #7 0.76 19,664 2533 1.51 Rust #3 2.00 19,656 1235 2.00 Ada 2012 GNAT #5 2.56 19,660 2220 2.56 Ada 2012 GNAT #2 2.58 19,668 2158 2.58 Rust #8 0.92 19,784 1952 3.10 Rust #2 0.91 19,656 1910 3.29 Rust #5 0.91 19,656 1963 3.30 Rust #4 3.45 123,784 944 3.45 Rust #6 3.48 123,784 959 3.48 Rust 4.52 19,656 1240 4.52 Ada 2012 GNAT 6.28 19,664 1381 6.28 k-nucleotide source secs mem gz cpu secs Rust #7 2.86 134,084 1585 9.12 Rust #8 3.68 137,580 1549 10.41 Rust #6 2.90 159,464 1697 10.51 Rust #5 3.91 137,764 1745 11.86 Ada 2012 GNAT #2 6.75 259,564 4911 13.58 Rust #2 6.10 139,388 1350 16.32 Rust #9 6.77 135,684 1850 18.07 Rust #4 6.70 137,288 1755 18.12 Rust 21.62 157,080 1086 64.67 reverse-complement source secs mem gz cpu secs Rust 0.52 498,816 2762 0.83 Rust #2 0.85 995,200 1332 1.50 Rust #3 0.87 995,072 1105 1.58 Ada 2012 GNAT #2 2.26 821,912 3285 2.58 Ada 2012 GNAT 12.53 528,356 943 12.53 binary-trees source secs mem gz cpu secs Rust #5 1.08 198,528 771 3.82 Rust #2 1.22 199,676 729 4.29 Rust #4 1.29 189,052 765 4.67 Rust #3 1.39 198,860 762 5.04 Rust 2.04 133,120 760 7.21 Ada 2012 GNAT #4 3.48 202,880 2117 10.05 Ada 2012 GNAT 20.98 266,240 896 20.97 Ada 2012 GNAT #3 9.72 529,280 1275 32.90 Ada 2012 GNAT GNATMAKE 12.3.0 Rust 1.76.0 (07dca489a 2024-02-04) LLVM version: 17.0.6 all Ada 2012 GNAT programs & measurements all Rust programs & measurements