x64 Ubuntu : Intel® Q6600® quad-core
Computer Language Benchmarks Game      [[ Help ]]

- all benchmarks - n-body fannkuch-redux meteor-contest fasta fasta-redux spectral-norm reverse-complement mandelbrot k-nucleotide regex-dna pidigits chameneos-redux thread-ring binary-trees - all languages - Ada 2005 GNAT ATS C GNU gcc Clojure C# Mono C++ GNU g++ Erlang Erlang HiPE F# Mono Fortran Intel Go Haskell GHC Java 7 -server Lisp SBCL OCaml Pascal Free Pascal Perl PHP Python 3 Racket Ruby 1.9 Ruby JRuby Scala

÷ Ada 2005 GNAT ATS C GNU gcc Clojure C# Mono C++ GNU g++ Erlang Erlang HiPE F# Mono Fortran Intel Go Haskell GHC Java 7 -server Lisp SBCL OCaml Pascal Free Pascal Perl PHP Python 3 Racket Ruby 1.9 Ruby JRuby Scala

 Step 1 : Are the C++ GNU g++ 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 C++ GNU g++ program used compared to the fastest C GNU gcc program.

Look at speed another way - look at a box plot of Time-used data.

 Step 2 : Are the C++ GNU g++ 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 C++ GNU g++ program used compared to the fastest C GNU gcc program.

C++ GNU g++ used what fraction? used how many times more?
Benchmark	Time	Memory	Code
k-nucleotide	1/6	±	±
n-body	±	±	±
spectral-norm	±	±	±
reverse-complement	±	1/2	±
pidigits	±	2×	±
fannkuch-redux	±	3×	±
mandelbrot	±	±	±
fasta	±	±	±
fasta-redux	±	2×	±
binary-trees	2×	2×	±
regex-dna	2×	1/2	1/4

C++ GNU g++ used what fraction? used how many times more?
Time-used	|-	|---	25%	median	75%	---|	-|
(Elapsed secs)	1/6	±	±	±	±	±	2×

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

 Step 3 : Are the C++ GNU g++ 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 C++ GNU g++ program are shown for comparison against measurements of the fastest C GNU gcc program.

Program Source Code	CPU secs	Elapsed secs	Memory KB	Code B	≈ CPU Load
k-nucleotide
C++ GNU g++	10.32	2.97	139,016	3415	84% 99% 85% 82%
C GNU gcc	43.62	16.59	180,384	2280	97% 35% 94% 38%
n-body
C++ GNU g++	19.30	19.31	428	1659	0% 100% 0% 0%
C GNU gcc	20.72	20.72	360	1429	0% 0% 0% 100%
spectral-norm
C++ GNU g++	10.02	2.52	504	1044	100% 100% 100% 100%
C GNU gcc	10.65	2.67	504	1139	100% 100% 100% 100%
reverse-complement
C++ GNU g++	1.06	0.68	245,712	2275	54% 50% 18% 37%
C GNU gcc	1.01	0.71	390,072	1867	4% 87% 25% 30%
pidigits
C++ GNU g++	2.29	2.30	1,644	682	0% 0% 0% 100%
C GNU gcc	2.29	2.29	924	541	0% 100% 0% 0%
fannkuch-redux
C++ GNU g++	50.35	12.87	1,240	1440	100% 94% 100% 98%
C GNU gcc	50.34	12.84	396	1557	95% 99% 100% 99%
mandelbrot
C++ GNU g++	24.31	6.11	32,296	1017	100% 100% 100% 100%
C GNU gcc	23.48	5.88	27,156	799	100% 100% 100% 100%
fasta
C++ GNU g++	6.16	6.17	356	1266	0% 100% 0% 0%
C GNU gcc	5.84	5.85	356	1221	0% 1% 0% 100%
fasta-redux
C++ GNU g++	2.00	2.00	820	1474	0% 100% 0% 1%
C GNU gcc	1.68	1.68	356	1321	0% 100% 2% 1%
binary-trees
C++ GNU g++	27.33	8.93	360,432	892	64% 87% 62% 96%
C GNU gcc	13.68	5.51	150,784	850	20% 65% 85% 79%
regex-dna
C++ GNU g++	5.65	4.11	163,956	695	38% 76% 23% 2%
C GNU gcc	5.73	2.49	317,412	2579	43% 70% 50% 69%

 Step 4 : Are there other C++ GNU g++ programs for these benchmarks?

Remember - those are just the fastest C++ GNU g++ and C GNU gcc programs measured on this OS/machine. Check if there are other implementations of these benchmark programs for C++ GNU g++.

Ada 2005 GNAT ATS C GNU gcc Clojure C# Mono C++ GNU g++ Erlang Erlang HiPE F# Mono Fortran Intel Go Haskell GHC Java 7 -server Lisp SBCL OCaml Pascal Free Pascal Perl PHP Python 3 Racket Ruby 1.9 Ruby JRuby Scala

Maybe one of those other C++ GNU g++ programs is fastest on a different OS/machine.

 Step 5 : Are there other faster programs for these benchmarks?

Remember - those are just the fastest C++ GNU g++ and C GNU gcc programs measured on this OS/machine. Check if there are faster implementations of these benchmark programs for other programming languages.

n-body fannkuch-redux meteor-contest fasta fasta-redux spectral-norm reverse-complement mandelbrot k-nucleotide regex-dna pidigits chameneos-redux thread-ring binary-trees

Maybe one of those other programs is fastest on a different OS/machine.

 C++ GNU g++ : c plus objects plus generics 

C++ 1991-2006, Bjarne Stroustrup (pdf)

gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5)

Home Page: http://gcc.gnu.org/

Download: ftp://ftp.gnu.org/pub/gnu/gcc/

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