Ada 2005 GNAT programs versus C++ g++ by benchmark task performance pidigits source secs mem gz cpu cpu load Ada 2005 GNAT 1.75 4,328 1068 1.74 1% 1% 100% 1% C++ g++ 1.88 4,276 513 1.88 0% 100% 1% 0% fannkuch-redux source secs mem gz cpu cpu load Ada 2005 GNAT 10.23 4,504 2113 40.77 100% 100% 99% 100% C++ g++ 10.61 2,044 980 41.90 100% 96% 100% 100% spectral-norm source secs mem gz cpu cpu load Ada 2005 GNAT 2.00 4,468 2770 7.87 99% 98% 99% 99% C++ g++ 2.02 1,332 1044 7.91 99% 99% 99% 99% n-body source secs mem gz cpu cpu load Ada 2005 GNAT 8.83 2,072 2617 8.83 1% 0% 0% 100% C++ g++ 8.23 1,856 1763 8.23 100% 1% 1% 0% reverse-complement source secs mem gz cpu cpu load Ada 2005 GNAT 3.93 785,560 3283 4.49 1% 41% 74% 1% C++ g++ 3.08 980,604 2280 4.66 62% 25% 12% 54% k-nucleotide source secs mem gz cpu cpu load Ada 2005 GNAT 11.32 258,596 4908 25.26 30% 65% 42% 87% C++ g++ 7.75 165,180 1276 26.02 80% 96% 82% 79% fasta source secs mem gz cpu cpu load Ada 2005 GNAT 4.08 2,092 2221 4.08 0% 29% 72% 3% C++ g++ 1.35 1,952 2711 4.18 79% 78% 78% 79% binary-trees source secs mem gz cpu cpu load Ada 2005 GNAT 8.27 202,500 2107 26.49 93% 80% 73% 80% C++ g++ 2.55 135,568 809 7.99 85% 96% 69% 66% mandelbrot source secs mem gz cpu cpu load Ada 2005 GNAT 5.59 32,376 1819 22.17 100% 100% 98% 99% C++ g++ 1.51 25,704 1791 5.99 99% 100% 100% 100% regex-redux source secs mem gz cpu cpu load Ada 2005 GNAT 6.70 154,440 3640 19.34 68% 92% 63% 66% C++ g++ 1.61 203,572 1315 4.18 100% 52% 57% 54% Ada 2005 GNAT GNATMAKE 7.2.0 gcc (Ubuntu 7.2.0-8ubuntu3) 7.2.0 C++ g++ g++ (Ubuntu 7.2.0-8ubuntu3) 7.2.0 vs C vs C++