OUT-OF-DATE! Read http://shootout.alioth.debian.org/      

- all benchmarks - n-body fannkuch (deprecated) meteor-contest fasta spectral-norm reverse-complement mandelbrot k-nucleotide regex-dna pidigits chameneos-redux thread-ring binary-trees hello-world sum-file nsieve nsieve-bits partial-sums recursive - all languages - BASIC FreeBASIC C GNU gcc C++ GNU g++ CAL Clean D Digital Mars Eiffel SmartEiffel Forth bigForth Forth GNU GForth Groovy Icon Io Lisaac Mercury Nice Oberon-2 OO2C Pike Prolog SWI Prolog YAP Rebol SML MLton SML SML/NJ Tcl Zonnon Mono

÷ BASIC FreeBASIC C GNU gcc C++ GNU g++ CAL Clean D Digital Mars Eiffel SmartEiffel Forth bigForth Forth GNU GForth Groovy Icon Io Lisaac Mercury Nice Oberon-2 OO2C Pike Prolog SWI Prolog YAP Rebol SML MLton SML SML/NJ Tcl Zonnon Mono

 Step 1 : Are the D Digital Mars 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 D Digital Mars 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 D Digital Mars 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 D Digital Mars program used compared to the fastest C++ GNU g++ program.

D Digital Mars used what fraction? used how many times more?
Benchmark	Time	Memory	Code
partial-sums	±	±	±
binary-trees	±	±	±
fasta	±	4×	±
pidigits	±	±	±
nsieve	±	±	±
nsieve-bits	±	2×	±
spectral-norm	±	±	±
reverse-complement	±	±	±
k-nucleotide	±	2×	1/2
regex-dna	±	7×	1/3
n-body	±	±	±
mandelbrot	2×	±	1/3
recursive	3×	±	1/2

D Digital Mars used what fraction? used how many times more?
Time-used	|-	|---	25%	median	75%	---|	-|
(CPU secs)	±	±	±	±	±	2×	3×

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

 Step 3 : Are the D Digital Mars 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 D Digital Mars 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
partial-sums
D Digital Mars	3.89		588	440
C++ GNU g++	4.05		852	531
binary-trees
D Digital Mars	4.34		4,724	705
C++ GNU g++	4.47		6,996	541
fasta
D Digital Mars	18.99		3,052	1095
C++ GNU g++	18.72		788	1248
pidigits
D Digital Mars	1.70		852	756
C++ GNU g++	1.66		1,052	652
nsieve
D Digital Mars	2.13		8,368	298
C++ GNU g++	2.08		5,764	313
nsieve-bits
D Digital Mars	4.07		5,108	394
C++ GNU g++	3.86		3,316	494
spectral-norm
D Digital Mars	27.14		720	403
C++ GNU g++	23.84		900	442
reverse-complement
D Digital Mars	0.64		12,924	685
C++ GNU g++	0.54		13,288	810
k-nucleotide
D Digital Mars	9.20		22,976	666
C++ GNU g++	7.46		9,304	1380
regex-dna
D Digital Mars	7.54		86,596	506
C++ GNU g++	5.58		12,704	1588
n-body
D Digital Mars	20.67		688	1308
C++ GNU g++	14.62		932	1705
mandelbrot
D Digital Mars	6.16		632	399
C++ GNU g++	3.02		896	1097
recursive
D Digital Mars	6.31		1,196	349
C++ GNU g++	2.40		1,008	566

 Step 4 : Are there other D Digital Mars programs for these benchmarks?

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

BASIC FreeBASIC C GNU gcc C++ GNU g++ CAL Clean D Digital Mars Eiffel SmartEiffel Forth bigForth Forth GNU GForth Groovy Icon Io Lisaac Mercury Nice Oberon-2 OO2C Pike Prolog SWI Prolog YAP Rebol SML MLton SML SML/NJ Tcl Zonnon Mono

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

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

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

n-body fannkuch (deprecated) meteor-contest fasta spectral-norm reverse-complement mandelbrot k-nucleotide regex-dna pidigits chameneos-redux thread-ring binary-trees hello-world sum-file nsieve nsieve-bits partial-sums recursive

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

 D Digital Mars : c++ reduced and simplified 

Digital Mars D Compiler v1.030

Home Page: http://www.digitalmars.com/d/

Download: http://www.digitalmars.com/d/

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