Swift versus Go 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
Go #3	8.33	19,664	975	33.25
Swift	33.85	19,660	457	33.85
Swift #3	8.58	19,660	1103	33.96
Go	11.74	19,664	906	46.77
Go #2	11.79	19,664	903	46.97
n-body
source	secs	mem	gz	cpu secs
Swift #4	5.49	19,680	1361	5.49
Swift #5	5.51	19,812	1372	5.51
Swift #7	5.52	19,684	1333	5.52
Swift #6	5.97	19,680	1200	5.97
Swift #8	5.99	19,808	1688	5.99
Go #3	6.37	19,808	1207	6.38
Go	7.00	19,680	1316	7.02
Go #2	7.02	19,680	1222	7.03
Swift #2	9.55	19,684	1198	9.55
Swift #3	202.89	19,680	1210	202.89
Swift #9	287.28	19,684	1532	287.27
spectral-norm
source	secs	mem	gz	cpu secs
Swift	5.32	19,684	444	5.32
Go	5.32	19,824	417	5.33
Go #2	1.53	19,824	674	5.67
Go #4	1.44	19,824	555	5.67
Swift #3	1.43	19,684	607	5.69
mandelbrot
source	secs	mem	gz	cpu secs
Swift #7	1.34	47,104	1147	5.30
Swift #6	1.45	50,176	1147	5.73
Go #4	3.76	35,328	912	14.92
Go #3	3.76	35,456	900	14.94
Go	5.01	33,408	829	19.98
Swift	26.40	19,680	400	26.40
Swift #5	7.21	43,520	665	26.95
Go #2	6.85	33,152	843	27.29
Go #6	6.89	32,768	707	27.40
Swift #3		Bad Output
pidigits
source	secs	mem	gz	cpu secs
Swift #2	0.88	19,684	606	0.88
Go #4	0.95	19,808	689	0.97
Go	1.35	19,696	715	1.37
Go #3	1.58	19,824	610	1.62
Go #2	2.13	19,824	740	2.19
Go #8	2.49	19,696	727	2.50
Go #7	5.12	19,824	702	5.88
regex-redux
source	secs	mem	gz	cpu secs
Go #5	3.17	320,972	817	5.38
Go #4	14.51	368,680	832	34.26
Swift #2	41.76	684,640	678	41.75
Swift	24.13	889,972	721	42.70
Swift #4	20.41	1,060,208	751	44.32
Go	25.58	345,472	749	61.95
Go #3	25.72	402,968	836	62.19
fasta
source	secs	mem	gz	cpu secs
Go	3.73	19,804	1055	3.74
Swift #2	2.18	19,680	1952	3.83
Go #2	1.26	19,672	1405	4.03
Go #3	1.50	19,664	1362	4.08
Swift	5.15	19,676	1533	5.15
Swift #3	2.14	29,584	2097	5.26
k-nucleotide
source	secs	mem	gz	cpu secs
Go #7	7.52	162,944	1613	28.68
Go #6	8.17	145,152	1596	29.90
Go #3	8.38	145,152	1729	30.32
Go #4	9.07	139,904	1552	30.33
Swift #2	14.51	259,048	1373	55.29
Swift		Make Error
reverse-complement
source	secs	mem	gz	cpu secs
Go #2	2.21	802,176	614	2.30
Swift	1.88	796,840	1293	2.30
Go #3	2.47	802,048	609	2.56
Go #6	1.84	1,249,840	1340	3.30
Go #5		Bad Output
Go		Failed
binary-trees
source	secs	mem	gz	cpu secs
Go #6	27.61	404,608	618	29.03
Swift #5	13.79	736,000	813	40.99
Swift #3	13.33	705,408	868	43.00
Swift #2	13.28	705,280	822	43.28
Go #2	13.87	601,252	672	55.04
Go #5	14.37	308,092	957	56.80
Go #3	14.86	323,544	806	57.39
Go	30.97	262,396	488	57.95
Swift	20.15	735,488	720	59.68
Go #7	33.10	292,588	531	61.68
Swift #4	19.49	705,536	772	62.34
Swift #9		Make Error
Swift	Swift version 5.10 (swift-5.10-RELEASE)
Go	go version go1.22.0 linux/amd64 GOAMD64=v2