1 : At a glance - Are the Fortran Intel programs faster?

Each chart bar shows, for one unidentified benchmark, how much the fastest Fortran Intel program used compared to the fastest C gcc program.

(Memory use is only compared for tasks that require memory to be allocated.)


These are not the only compilers and interpreters. These are not the only programs that could be written. These are not the only tasks that could be solved. These are just 10 tiny examples.

 2 : Approximately - Are the Fortran Intel programs faster?

Each table row shows, for one named benchmark, how much the fastest Fortran Intel program used compared to the fastest C gcc program.

(Memory use is only compared for tasks that require memory to be allocated.)

 Fortran Intel used what fraction? used how many times more? 
Benchmark Time Memory Code
 n-body± ±
 spectral-norm± ±
 pidigits± 
 fasta †± ±
 fannkuch-redux ±
 binary-trees±±
 reverse-complement †±±
 k-nucleotide±±
 mandelbrot ±
 Fortran Intel used what fraction? used how many times more? 
Time-used  |-  |---  25% median  75%  ---|  -|
(Elapsed secs)±±±

† possible mismatch - one-core program compared to multi-core program.

± read the measurements and then read the program source code.

 3 : Measurements - Are the Fortran Intel programs faster?

These are not the only tasks that could be solved. These are just 10 tiny examples. These are not the only compilers and interpreters. These are not the only programs that could be written.

For each named benchmark, measurements of the fastest Fortran Intel program are shown for comparison against measurements of the fastest C gcc program.

Program Source Code CPU secs Elapsed secs Memory KB Code B ≈ CPU Load
 n-body 
Fortran Intel9.789.795161659  1% 0% 1% 100%
C gcc10.5010.509681490  100% 0% 1% 1%
 spectral-norm 
Fortran Intel7.901.983,392638  99% 100% 99% 100%
C gcc8.282.091,776569  100% 100% 100% 99%
 pidigits 
Fortran Intel1.911.921,572975  0% 2% 100% 3%
C gcc1.721.731,996448  2% 1% 1% 100%
 fasta 
Fortran Intel2.442.445121327  2% 0% 1% 100% †
C gcc5.361.972,4721914  61% 34% 78% 99% †
 fannkuch-redux 
Fortran Intel55.7413.9810,5361148  100% 100% 100% 100%
C gcc35.659.101,516910  99% 96% 97% 100%
 binary-trees 
Fortran Intel19.176.02184,4201199  77% 73% 70% 100%
C gcc10.183.26160,856906  64% 76% 75% 99%
 reverse-complement 
Fortran Intel1.011.01248,6361013  2% 2% 99% 3% †
C gcc0.750.49251,716741  33% 20% 31% 72% †
 k-nucleotide 
Fortran Intel61.7023.90194,1402079  80% 49% 64% 67%
C gcc35.0511.64190,2242280  59% 96% 96% 53%
 mandelbrot 
Fortran Intel49.0818.7861,076611  94% 41% 93% 34%
C gcc19.775.1332,240694  95% 96% 100% 96%
 regex-dna 
No program
C gcc0.060.09?2579  22% 88% 11% 11%
 fasta-redux 
No program
C gcc0.020.03?1321  0% 0% 0% 100%

† possible mismatch - one-core program compared to multi-core program.

 4 : Are there other Fortran Intel programs for these benchmarks?

Remember - those are just the fastest Fortran Intel and C gcc 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.

 5 : Are there other faster programs for these benchmarks?

Remember - those are just the fastest Fortran Intel and C gcc 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 15.0.2.164 Build 20150121
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