Step 1 : Are the Fortran Intel programs faster? At a glance.
This chart shows 3 comparisons - Time-used, Memory-used and Code-used ~ speed and size.
Each chart bar shows, for one unidentified benchmark, how much the fastest Fortran Intel program used compared to the fastest C++ GNU g++ program.
Look at speed another way - look at a box plot of Time-used data.
Step 2 : Are the Fortran Intel programs faster? Approximately.
This table shows 3 comparisons - Time-used, Memory-used and Code-used ~ speed and size.
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 | |
| fasta | 1/2 | ± | ± | |
| mandelbrot | 1/2 | ± | ± | |
| n-body | ± | ± | ± | |
| spectral-norm | ± | ± | 1/2 | |
| pidigits | ± | ± | ± | |
| fannkuch-redux | ± | 1/4 | 1/2 | |
| reverse-complement | ± | ± | 1/2 | |
| binary-trees | 2× | ± | ± | |
| k-nucleotide | 5× | ± | 1/2 | |
| Fortran Intel used what fraction? used how many times more? | |||||||
|---|---|---|---|---|---|---|---|
| Time-used | |- | |--- | 25% | median | 75% | ---| | -| |
| (Elapsed secs) | 1/2 | 1/2 | ± | ± | ± | 2× | 5× |
± read the measurements and then read the program source code.
Step 3 : Are the Fortran Intel programs faster? Measurements.
This table shows 5 measurements - CPU Time, Elapsed Time, Memory, Code and ≈ CPU Load ~ speed and size.
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 |
|---|---|---|---|---|---|
| fasta | |||||
| Fortran Intel | 3.18 | 3.19 | 252 | 1327 | 0% 0% 1% 100% |
| C++ GNU g++ | 6.30 | 6.30 | 288 | 1266 | 0% 0% 0% 100% |
| mandelbrot | |||||
| Fortran Intel | 14.68 | 14.68 | 30,936 | 967 | 0% 0% 0% 100% |
| C++ GNU g++ | 23.72 | 23.73 | 32,096 | 1017 | 0% 0% 0% 100% |
| n-body | |||||
| Fortran Intel | 15.11 | 15.12 | 260 | 1172 | 1% 0% 0% 100% |
| C++ GNU g++ | 20.15 | 20.16 | 320 | 1659 | 0% 0% 0% 100% |
| spectral-norm | |||||
| Fortran Intel | 7.85 | 7.86 | 788 | 513 | 1% 0% 0% 100% |
| C++ GNU g++ | 10.00 | 10.00 | 648 | 1044 | 0% 1% 0% 100% |
| pidigits | |||||
| Fortran Intel | 2.72 | 2.72 | 1,136 | 934 | 0% 0% 1% 100% |
| C++ GNU g++ | 2.75 | 2.76 | 1,448 | 682 | 0% 1% 1% 100% |
| fannkuch-redux | |||||
| Fortran Intel | 67.64 | 67.66 | 252 | 590 | 0% 0% 0% 100% |
| C++ GNU g++ | 61.42 | 61.44 | 1,020 | 1439 | 0% 0% 0% 100% |
| reverse-complement | |||||
| Fortran Intel | 1.24 | 1.25 | 246,600 | 1013 | 1% 0% 1% 100% |
| C++ GNU g++ | 1.07 | 1.09 | 245,424 | 2275 | 0% 0% 1% 100% |
| binary-trees | |||||
| Fortran Intel | 25.06 | 25.07 | 99,592 | 1199 | 0% 0% 0% 100% |
| C++ GNU g++ | 13.03 | 13.05 | 148,440 | 892 | 0% 1% 0% 100% |
| k-nucleotide | |||||
| Fortran Intel | 61.08 | 61.12 | 182,212 | 2079 | 0% 0% 0% 100% |
| C++ GNU g++ | 11.67 | 11.68 | 133,456 | 3415 | 0% 0% 0% 100% |
| regex-dna | |||||
| C++ GNU g++ | 0.05 | 0.08 | ? | 695 | 0% 0% 0% 100% |
| fasta-redux | |||||
| C++ GNU g++ | 0.03 | 0.04 | ? | 1474 | 20% 0% 0% 100% |
Step 4 : Are there other Fortran Intel programs for these benchmarks?
Remember - those are just the fastest Fortran Intel and C++ GNU g++ programs measured on this OS/machine. Check if there are other implementations of these benchmark programs for Fortran Intel.
Maybe one of those other Fortran Intel programs is fastest on a different OS/machine.
Step 5 : Are there other faster programs for these benchmarks?
Remember - those are just the fastest Fortran Intel and C++ GNU g++ programs measured on this OS/machine. Check if there are faster implementations of these benchmark programs for other programming languages.
Maybe one of those other programs is fastest on a different OS/machine.
Fortran Intel : pioneering numeric and scientific programming
Intel(R) Fortran Compiler XE for applications running on IA-32, Version 12.1 Build 20111128
Home Page: Non-Commercial Software Development