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- all benchmarks - binary-trees chameneos-redux fannkuch fasta k-nucleotide mandelbrot meteor-contest n-body pidigits regex-dna reverse-complement spectral-norm thread-ring - all languages - Ada 2005 GNAT ATS C GNU gcc C# Mono C++ GNU g++ F# Mono Go 6g 8g Haskell GHC Java 6 -server Java 6 -Xint Java 6 steady state OCaml Pascal Free Pascal Scala Scheme PLT

÷ Ada 2005 GNAT ATS C GNU gcc C# Mono C++ GNU g++ F# Mono Go 6g 8g Haskell GHC Java 6 -server Java 6 -Xint Java 6 steady state OCaml Pascal Free Pascal Scala Scheme PLT

 Step 1 : Are the Ada 2005 GNAT 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 Ada 2005 GNAT program used compared to the fastest C GNU gcc program.

 Step 2 : Are the Ada 2005 GNAT 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 Ada 2005 GNAT program used compared to the fastest C GNU gcc program.

Ada 2005 GNAT used what fraction? used how many times more?
Benchmark	Time	Memory	Code
k-nucleotide	1/2	±	2×
reverse-complement	±	2×	4×
fannkuch	±	3×	2×
pidigits	±	2×	2×
mandelbrot	±	±	2×
n-body	±	3×	±
spectral-norm	2×	3×	±
fasta	4×	3×	±
binary-trees	5×	±	±
regex-dna	6×	1/2	±

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

 Step 3 : Are the Ada 2005 GNAT 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 Ada 2005 GNAT 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
Ada 2005 GNAT	35.11	11.99	256,660	4865	39% 78% 79% 96%
C GNU gcc	58.56	18.66	294,064	2519	90% 75% 54% 95%
reverse-complement
Ada 2005 GNAT	1.08	0.94	197,816	3154	1% 34% 81% 1%
C GNU gcc	1.31	1.31	112,788	722	1% 0% 100% 1%
fannkuch
Ada 2005 GNAT	38.17	10.60	2,060	1518	86% 99% 100% 77%
C GNU gcc	49.63	13.48	644	937	99% 86% 84% 100%
pidigits
Ada 2005 GNAT	2.29	2.29	2,204	1254	0% 100% 0% 1%
C GNU gcc	2.29	2.29	1,172	541	0% 100% 3% 1%
mandelbrot
Ada 2005 GNAT	22.18	6.07	33,640	1805	97% 93% 90% 88%
C GNU gcc	24.09	6.07	27,696	879	100% 99% 99% 100%
n-body
Ada 2005 GNAT	24.31	24.31	1,520	1723	0% 0% 100% 0%
C GNU gcc	23.06	23.06	476	1429	0% 100% 0% 0%
spectral-norm
Ada 2005 GNAT	15.94	5.97	2,480	1702	94% 60% 44% 67%
C GNU gcc	11.51	2.97	772	1139	100% 99% 99% 91%
fasta
Ada 2005 GNAT	6.59	6.59	1,564	1623	1% 0% 0% 100%
C GNU gcc	1.63	1.63	452	1321	0% 100% 0% 1%
binary-trees
Ada 2005 GNAT	37.11	37.12	198,136	955	0% 0% 0% 100%
C GNU gcc	13.88	7.06	151,180	850	53% 83% 2% 50%
regex-dna
Ada 2005 GNAT	33.18	15.38	183,064	3334	52% 19% 83% 59%
C GNU gcc	5.23	2.68	325,256	2579	20% 63% 67% 51%
chameneos-redux
Ada 2005 GNAT	1.14	0.74	2,236	1615	0% 62% 32% 65%
	No program

 Step 4 : Are there other Ada 2005 GNAT programs for these benchmarks?

Remember - those are just the fastest Ada 2005 GNAT and C GNU gcc programs measured on this OS/machine. Check if there are other implementations of these benchmark programs for Ada 2005 GNAT.

Ada 2005 GNAT ATS C GNU gcc C# Mono C++ GNU g++ F# Mono Go 6g 8g Haskell GHC Java 6 -server Java 6 -Xint Java 6 steady state OCaml Pascal Free Pascal Scala Scheme PLT

Maybe one of those other Ada 2005 GNAT programs is fastest on a different OS/machine.

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

Remember - those are just the fastest Ada 2005 GNAT and C GNU gcc programs measured on this OS/machine. Check if there are faster implementations of these benchmark programs for other programming languages.

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

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

 Ada 2005 GNAT : large-scale safety-critical software 

book Ada Distilled: An introduction to Ada Programming for Experienced Computer Programmers, Richard Riehle, 2003 (pdf)

wikibook Ada Programming

GNAT 4.4.1

Home Page: The Libre Site

Download: Download GNAT GPL Edition

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