C++ g++ versus Python 3 fastest performance

Always look at the source code.

If the fastest programs are hand-written vector instructions, does the host language matter? You might be more interested in the less optimised programs — more seconds, less gz source code.

fannkuch-redux
source	secs	mem	gz	cpu secs
C++ g++ #6	3.25	19,788	1535	12.89
C++ g++ #7	13.93	19,660	1156	13.93
C++ g++ #5	7.97	19,788	987	31.14
C++ g++ #3	36.80	19,660	600	36.80
C++ g++ #4	9.47	19,660	1445	37.11
C++ g++ #2	9.82	19,656	1446	38.58
C++ g++	10.59	19,660	1065	41.61
Python 3 #6	1,031.38	19,652	391	1,031.34
Python 3 #4	300.68	19,652	960	1,189.39
n-body
source	secs	mem	gz	cpu secs
C++ g++ #0	2.14	19,676	1933	2.14
C++ g++ #7	3.97	19,804	1815	3.97
C++ g++ #2	4.20	19,676	1884	4.19
C++ g++ #3	5.30	19,804	1402	5.30
C++ g++ #9	5.43	19,676	1536	5.43
C++ g++ #4	5.44	19,804	1434	5.44
C++ g++ #5	6.01	19,676	1544	6.00
C++ g++	6.49	19,676	1666	6.49
C++ g++ #8	6.57	19,676	1524	6.57
C++ g++ #6	6.89	19,676	1674	6.89
Python 3 #2	362.72	19,656	1247	362.70
Python 3	368.32	19,656	1201	368.30
spectral-norm
source	secs	mem	gz	cpu secs
C++ g++ #6	0.72	19,812	1050	2.84
C++ g++ #5	1.32	19,684	1050	5.25
C++ g++	5.36	19,684	459	5.36
C++ g++ #8	1.52	19,684	1284	6.04
Python 3 #7	90.77	19,656	425	359.32
Python 3 #6	359.89	19,656	334	359.83
Python 3 #8	98.97	19,656	415	386.79
mandelbrot
source	secs	mem	gz	cpu secs
C++ g++	0.89	34,944	1797	3.46
C++ g++ #4	0.89	35,200	3554	3.47
C++ g++ #6	0.98	35,072	1014	3.89
C++ g++ #0	2.35	35,328	2752	9.28
C++ g++ #8	4.79	35,072	749	13.12
C++ g++ #5	13.33	34,688	596	13.33
C++ g++ #9	3.50	35,200	732	13.49
C++ g++ #7	3.49	35,072	1023	13.90
C++ g++ #2	16.90	34,560	700	16.90
C++ g++ #3	27.26	19,804	421	27.25
Python 3 #7	159.49	19,656	698	634.00
Python 3 #3	820.95	19,624	319	820.91
Python 3 #2	232.82	156,340	790	880.90
Python 3 #5	274.66	19,628	463	1,094.30
pidigits
source	secs	mem	gz	cpu secs
C++ g++ #5	0.86	19,804	804	0.86
C++ g++ #4	0.88	19,804	521	0.88
Python 3 #3	1.31	19,784	573	1.31
Python 3 #4	4.73	19,656	348	4.73
Python 3 #5		Failed
regex-redux
source	secs	mem	gz	cpu secs
C++ g++ #6	1.15	276,276	2856	2.18
Python 3 #2	1.35	168,092	1411	2.62
C++ g++ #2	2.84	212,776	706	3.60
C++ g++	3.62	212,180	662	3.62
C++ g++ #5	3.86	215,556	859	4.54
Python 3	8.83	432,724	515	16.44
C++ g++ #3	12.41	217,580	859	17.91
C++ g++ #4		Make Error
fasta
source	secs	mem	gz	cpu secs
C++ g++ #8	0.76	19,792	2758	1.51
C++ g++ #2	1.81	19,668	1129	1.81
C++ g++	1.90	19,664	1064	1.90
C++ g++ #3	2.62	19,664	1311	2.62
C++ g++ #4	3.32	19,664	1291	3.32
C++ g++ #6	1.05	19,668	2326	3.85
C++ g++ #5	1.05	19,668	2345	3.88
Python 3 #2	38.53	19,652	1126	38.53
Python 3 #3	38.86	19,780	1007	38.86
Python 3 #5	26.54	827,148	1951	53.26
Python 3	60.37	19,652	823	60.37
C++ g++ #7		Make Error
k-nucleotide
source	secs	mem	gz	cpu secs
C++ g++ #2	1.97	156,504	1634	5.87
C++ g++ #3	4.19	165,592	1280	13.77
C++ g++	6.90	757,080	1452	14.68
Python 3 #3	48.64	262,016	1970	184.81
Python 3 #8	87.79	506,880	663	262.44
Python 3 #9	77.06	380,416	614	263.65
Python 3	275.64	500,224	499	274.74
reverse-complement
source	secs	mem	gz	cpu secs
C++ g++ #2	0.70	499,840	2099	0.70
C++ g++ #6	3.20	1,517,660	1827	4.22
Python 3 #3	5.18	509,108	803	5.18
C++ g++	6.56	980,060	599	6.56
Python 3 #5	4.07	1,500,240	960	7.41
Python 3 #2	10.46	1,788,876	440	10.46
Python 3	10.69	1,987,304	484	10.69
Python 3 #6	7.86	2,484,084	821	11.49
Python 3 #4	13.91	4,003,712	343	13.91
C++ g++ #5	35.10	771,556	704	35.10
C++ g++ #3		Bad Output
binary-trees
source	secs	mem	gz	cpu secs
C++ g++ #7	0.95	201,400	896	3.30
C++ g++ #5	1.14	200,660	891	3.98
C++ g++ #9	1.72	135,936	815	4.46
C++ g++ #6	1.88	266,112	851	4.47
C++ g++ #3	1.88	265,600	951	4.72
C++ g++ #8	2.18	265,984	826	5.11
C++ g++	2.65	2,040,792	760	9.07
C++ g++ #2	21.51	265,856	514	21.51
Python 3 #2	110.47	273,024	344	110.46
Python 3 #4	34.53	277,632	481	126.59
Python 3 #5	35.74	275,456	669	127.53
Python 3	36.16	277,760	597	128.12
Python 3 #3	55.05	672,384	1247	158.56
C++ g++ #4		Make Error
C++ g++	Ubuntu 13.2.0-4ubuntu3
Python 3	Python 3.12.2