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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
 binary-trees±1/2±
 pidigits±±±
 fannkuch-redux±±
 reverse-complement1/21/2
 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++6.166.173561266  0% 100% 0% 0%
 mandelbrot 
Fortran Intel14.243.6129,172967  99% 99% 99% 99%
C++ GNU g++24.316.1132,2961017  100% 100% 100% 100%
 n-body 
Fortran Intel14.0914.095081172  0% 0% 0% 100%
C++ GNU g++19.3019.314281659  0% 100% 0% 0%
 spectral-norm 
Fortran Intel7.912.001,300638  99% 100% 99% 99%
C++ GNU g++10.022.525041044  100% 100% 100% 100%
 binary-trees 
Fortran Intel22.257.34182,1801199  95% 76% 69% 66%
C++ GNU g++27.338.93360,432892  64% 87% 62% 96%
 pidigits 
Fortran Intel1.911.921,512975  0% 0% 100% 1%
C++ GNU g++2.292.301,644682  0% 0% 0% 100%
 fannkuch-redux 
Fortran Intel50.0612.648,5121148  99% 99% 99% 99%
C++ GNU g++50.3512.871,2401440  100% 94% 100% 98%
 reverse-complement 
Fortran Intel1.261.27152,5041013  0% 100% 3% 2%
C++ GNU g++1.060.68245,7122275  54% 50% 18% 37%
 k-nucleotide 
Fortran Intel65.3826.22191,5002079  71% 35% 100% 45%
C++ GNU g++10.322.97139,0163415  84% 99% 85% 82%
 fasta-redux 
No program
C++ GNU g++0.020.03?1474  0% 100% 0% 0%
 regex-dna 
No program
C++ GNU g++0.060.06?695  14% 60% 40% 0%

 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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