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 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
 fasta1/2±±
 mandelbrot1/2±±
 n-body±±±
 spectral-norm±±1/2
 pidigits±±±
 fannkuch-redux±±
 binary-trees±1/2±
 reverse-complement±1/21/2
 k-nucleotide±1/2
 Fortran Intel used what fraction? used how many times more? 
Time-used  |-  |---  25% median  75%  ---|  -|
(Elapsed secs)1/21/2±±±

± 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 Intel2.722.722481327  0% 0% 1% 100%
C++ GNU g++6.166.163561266  0% 0% 0% 100%
 mandelbrot 
Fortran Intel15.6015.6130,608967  1% 1% 0% 100%
C++ GNU g++24.2824.2932,3001017  0% 0% 0% 100%
 n-body 
Fortran Intel14.0914.095081172  0% 0% 0% 100%
C++ GNU g++19.3019.314241659  0% 0% 0% 100%
 spectral-norm 
Fortran Intel7.857.85780513  1% 1% 0% 100%
C++ GNU g++9.9910.007561044  0% 0% 0% 100%
 pidigits 
Fortran Intel1.911.921,512975  1% 2% 1% 99%
C++ GNU g++2.272.271,648682  0% 0% 0% 100%
 fannkuch-redux 
Fortran Intel48.5848.597,5761148  0% 0% 0% 100%
C++ GNU g++50.3550.361,2361440  0% 0% 0% 100%
 binary-trees 
Fortran Intel24.2124.22149,3161199  0% 0% 0% 100%
C++ GNU g++17.2317.29296,252892  0% 0% 0% 100%
 reverse-complement 
Fortran Intel1.241.26116,0801013  2% 1% 3% 100%
C++ GNU g++0.870.89229,5162275  0% 0% 0% 100%
 k-nucleotide 
Fortran Intel59.2359.27171,5002079  0% 0% 0% 100%
C++ GNU g++9.859.87142,1243415  0% 0% 1% 100%
 fasta-redux 
No program
C++ GNU g++0.030.03?1474  0% 0% 25% 100%
 regex-dna 
No program
C++ GNU g++0.050.08?695  11% 0% 0% 89%

 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 Intel(R) 64 Compiler XE for applications running on Intel(R) 64, Version 12.1 Build 20111128

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