Ada 2005 GNAT vs C++ g++ | Computer Language Benchmarks Game

1 : Are the Ada 2005 GNAT programs faster? At a glance.

Each chart bar shows, for one unidentified benchmark, how much the fastest Ada 2005 GNAT program used compared to the fastest C++ g++ program.

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 : Are the Ada 2005 GNAT programs faster? Approximately.

Each table row shows, for one named benchmark, how much the fastest Ada 2005 GNAT program used compared to the fastest C++ g++ program.

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

Ada 2005 GNAT used what fraction? used how many times more?
Time-used	\|-	\|---	25%	median	75%	---\|	-\|
(Elapsed secs)	±	±	±	±	±	±	±

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

3 : Are the Ada 2005 GNAT programs faster? Measurements.

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 Ada 2005 GNAT program are shown for comparison against measurements of the fastest C++ g++ program.

Program Source Code	CPU secs	Elapsed secs	Memory KB	Code B	≈ CPU Load
fannkuch-redux
Ada 2005 GNAT	39.37	9.91	1,672	2100	100% 99% 99% 99%
C++ g++	49.71	12.69	996	1440	98% 100% 94% 100%
binary-trees
Ada 2005 GNAT	18.04	5.61	106,104	2167	82% 80% 78% 95%
C++ g++	19.06	6.60	173,960	892	60% 92% 75% 65%
fasta-redux
Ada 2005 GNAT	2.01	2.01	1,232	1909	0% 0% 100% 1%
C++ g++	2.17	2.17	620	1474	0% 0% 100% 1%
pidigits
Ada 2005 GNAT	2.68	2.68	1,804	1254	2% 0% 1% 100%
C++ g++	2.68	2.68	1,452	682	1% 0% 1% 99%
fasta
Ada 2005 GNAT	4.24	4.24	1,232	2186	0% 0% 100% 0%
C++ g++	4.10	4.11	620	1105	55% 0% 0% 46%
spectral-norm
Ada 2005 GNAT	9.36	2.39	1,900	2762	99% 98% 98% 99%
C++ g++	7.96	2.00	924	1044	100% 100% 100% 100%
mandelbrot
Ada 2005 GNAT	24.84	6.26	33,276	1805	100% 100% 99% 99%
C++ g++	19.64	5.10	32,076	726	95% 95% 95% 100%
k-nucleotide
Ada 2005 GNAT	22.36	9.60	253,480	4865	29% 66% 39% 100%
C++ g++	23.39	7.40	138,100	1252	73% 74% 74% 97%
regex-dna
Ada 2005 GNAT	19.68	6.54	100,444	3740	64% 96% 67% 75%
C++ g++	6.08	4.54	173,240	695	1% 77% 1% 57%
n-body
Ada 2005 GNAT	15.01	15.02	1,232	2427	0% 0% 100% 0%
C++ g++	10.41	10.42	620	1763	1% 1% 0% 100%
reverse-complement
Ada 2005 GNAT	1.63	1.24	197,324	3220	41% 1% 90% 2%
C++ g++	1.22	0.84	245,428	2275	19% 31% 12% 88%

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

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

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

5 : Are there other faster programs for these benchmarks?

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