Are the Ada 2005 GNAT programs faster?
Do the Ada 2005 GNAT programs use optimized assembly code libraries? Are they small simple programs or very optimized programs? Do the Ada 2005 GNAT programs use a fraction of the time used by other programs or do they use several times more?
| Ada 2005 GNAT used what fraction? used how many times more? | ||||
|---|---|---|---|---|
| Programs | Time | Memory | Code | Reduced N |
| ↓ k-nucleotide | 1/7 | 1/7 | 4× | |
| ↓ regex-dna | 1/2 | ± | 3× | |
| ↓ reverse-complement | ± | 2× | 4× | |
| ↓ mandelbrot | ± | ± | 2× | |
| ↓ pidigits | ± | 2× | 2× | |
| ↓ fasta | ± | 3× | ± | |
| ↓ n-body | ± | 3× | ± | |
| ↓ spectral-norm | ± | 3× | ± | |
| ↓ binary-trees | 6× | ± | ± | |
| ↓ fannkuch | 7× | 2× | ± | |
| ↓ chameneos-redux | 46× | ± | 1/2 | 600,000 |
± look at the measurements and then look at the programs.
Are the Ada 2005 GNAT programs faster?
| Program & Logs | CPU secs | Elapsed secs | Memory KB | Code B | ~ CPU Load |
|---|---|---|---|---|---|
| k-nucleotide | |||||
| Ada 2005 GNAT | 27.89 | 11.89 | 256,692 | 4504 | 45% 75% 30% 84% |
| C GNU gcc | 78.17 | 78.17 | 1,702,416 | 1141 | 0% 0% 100% 0% |
| regex-dna | |||||
| Ada 2005 GNAT | 45.99 | 16.50 | 183,732 | 3334 | 79% 68% 61% 66% |
| C GNU gcc | 31.06 | 31.06 | 124,780 | 1099 | 100% 0% 0% 0% |
| reverse-complement | |||||
| Ada 2005 GNAT | 1.19 | 0.98 | 197,868 | 3132 | 41% 63% 21% 0% |
| C GNU gcc | 1.44 | 1.44 | 125,276 | 722 | 100% 0% 1% 0% |
| mandelbrot | |||||
| Ada 2005 GNAT | 22.79 | 5.76 | 33,284 | 1805 | 99% 99% 99% 99% |
| C GNU gcc | 24.23 | 6.07 | 27,900 | 879 | 100% 100% 100% 100% |
| pidigits | |||||
| Ada 2005 GNAT | 3.79 | 3.79 | 2,192 | 1254 | 0% 100% 0% 0% |
| C GNU gcc | 3.79 | 3.79 | 1,132 | 541 | 99% 0% 0% 0% |
| fasta | |||||
| Ada 2005 GNAT | 6.54 | 6.55 | 1,576 | 1623 | 0% 0% 0% 100% |
| C GNU gcc | 5.74 | 5.73 | 476 | 1221 | 0% 0% 100% 0% |
| n-body | |||||
| Ada 2005 GNAT | 24.11 | 24.10 | 1,540 | 1723 | 0% 0% 0% 100% |
| C GNU gcc | 20.37 | 20.37 | 516 | 1173 | 100% 0% 0% 0% |
| spectral-norm | |||||
| Ada 2005 GNAT | 15.69 | 3.98 | 2,528 | 1702 | 98% 99% 98% 99% |
| C GNU gcc | 11.87 | 2.99 | 772 | 1139 | 99% 100% 99% 99% |
| binary-trees | |||||
| Ada 2005 GNAT | 37.59 | 37.59 | 198,160 | 955 | 100% 0% 0% 0% |
| C GNU gcc | 15.04 | 6.30 | 151,220 | 850 | 42% 25% 84% 69% |
| fannkuch | |||||
| Ada 2005 GNAT | 91.65 | 91.65 | 1,500 | 746 | 100% 0% 0% 0% |
| C GNU gcc | 51.43 | 12.97 | 700 | 937 | 99% 99% 99% 100% |
| chameneos-redux N = 600,000 reduced workload | |||||
| Ada 2005 GNAT | 18.00 | 6.75 | 2,276 | 1615 | 59% 66% 58% 60% |
| C GNU gcc | 0.52 | 0.15 | ? | 2879 | 87% 93% 93% 86% |
Ada 2005 GNAT : large-scale safety-critical software
wikibook Ada Programming
GNAT 4.3.3
Home Page: The Libre Site
Download: Download GNAT GPL Edition
