1 : Are the Fortran Intel programs faster? At a glance.
This chart shows 3 comparisons - Time-used, Memory-used and Code-used.
Each chart bar shows, for one unidentified benchmark, how much the fastest Fortran Intel program used compared to the fastest C++ GNU g++ program.
2 : Are the Fortran Intel programs faster? Approximately.
This table shows 3 comparisons - Time-used, Memory-used and Code-used.
Each table row shows, for one named benchmark, how much the fastest Fortran Intel program used compared to the fastest C++ GNU g++ program.
| Fortran Intel used what fraction? used how many times more? | ||||
|---|---|---|---|---|
| Benchmark | Time | Memory | Code | Reduced N |
| n-body | ± | 1/2 | ± | |
| spectral-norm | ± | ± | 1/2 | |
| fannkuch | 4× | 1/3 | 1/2 | |
| fasta | 4× | 1/2 | ± | |
| binary-trees | 5× | 1/3 | ± | |
| reverse-complement | 8× | ± | 1/3 | |
| mandelbrot | 8× | 8× | ± | 4,000 |
| k-nucleotide | 16× | ± | ± | |
± read the measurements and then read the program source code.
3 : Are the Fortran Intel programs faster? Measurements.
This table shows 5 measurements - CPU Time, Elapsed Time, Memory, Code and ~ CPU Load.
For each named benchmark, measurements of the fastest Fortran Intel program are shown for comparison against measurements of the fastest C++ GNU g++ program.
| Program Source Code | CPU secs | Elapsed secs | Memory KB | Code B | ~ CPU Load |
|---|---|---|---|---|---|
| n-body | |||||
| Fortran Intel | 21.24 | 21.24 | 500 | 1389 | 0% 0% 100% 0% |
| C++ GNU g++ | 20.57 | 20.56 | 932 | 1428 | 0% 0% 0% 100% |
| spectral-norm | |||||
| Fortran Intel | 15.93 | 4.00 | 1,276 | 568 | 99% 99% 100% 100% |
| C++ GNU g++ | 11.89 | 2.99 | 1,196 | 1114 | 100% 99% 99% 99% |
| fannkuch | |||||
| Fortran Intel | 49.20 | 49.19 | 464 | 521 | 0% 0% 100% 0% |
| C++ GNU g++ | 49.75 | 13.74 | 1,300 | 1186 | 80% 76% 100% 100% |
| fasta | |||||
| Fortran Intel | 8.54 | 8.54 | 488 | 1155 | 0% 0% 99% 0% |
| C++ GNU g++ | 2.26 | 2.26 | 964 | 1470 | 100% 0% 1% 0% |
| binary-trees | |||||
| Fortran Intel | 46.54 | 46.55 | 131,540 | 826 | 0% 0% 0% 100% |
| C++ GNU g++ | 28.55 | 9.01 | 357,820 | 892 | 71% 62% 95% 82% |
| reverse-complement | |||||
| Fortran Intel | 6.69 | 6.70 | 191,036 | 772 | 0% 0% 100% 0% |
| C++ GNU g++ | 1.21 | 0.85 | 245,644 | 2275 | 37% 13% 80% 14% |
| mandelbrot N = 4,000 reduced workload | |||||
| Fortran Intel | 3.36 | 3.36 | 16,100 | 813 | 0% 100% 0% 0% |
| C++ GNU g++ | 1.64 | 0.43 | 2,120 | 858 | 98% 91% 98% 93% |
| k-nucleotide | |||||
| Fortran Intel | 86.88 | 86.88 | 229,912 | 2238 | 0% 0% 100% 0% |
| C++ GNU g++ | 20.27 | 5.54 | 177,148 | 2673 | 99% 88% 90% 93% |
| pidigits | |||||
| Fortran Intel | |||||
| chameneos-redux | |||||
| regex-dna | |||||
Fortran Intel : pioneering numeric and scientific programming
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