C# .NET versus Go fastest performance

How the programs are written matters! 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# .NET #5	2.22	26,180	1485	8.62
C# .NET #2	29.59	30,836	584	29.58
Go #3	8.34	19,808	975	33.31
C# .NET #6	8.67	30,968	1075	34.39
C# .NET #9	9.08	32,348	1232	36.00
C# .NET #8	40.51	25,256	519	40.49
C# .NET #3	11.34	31,120	1117	44.67
Go #8	46.13	19,440	500	46.24
Go	12.29	19,808	906	49.04
Go #2	12.35	19,808	903	49.32
n-body
source	secs	mem	gz	cpu secs
C# .NET #9	3.16	30,388	2480	3.16
C# .NET #4	3.75	30,516	2137	3.74
C# .NET #7	4.79	30,640	1715	4.79
C# .NET #6	4.82	30,640	1754	4.81
Go #3	6.38	19,808	1207	6.40
C# .NET #0	6.44	26,464	1342	6.43
C# .NET #3	6.65	31,492	1311	6.64
C# .NET #2	6.83	26,012	1339	6.82
Go	7.01	19,808	1316	7.03
Go #2	7.03	19,808	1222	7.05
C# .NET #8	7.25	25,260	1335	7.25
C# .NET	7.80	31,508	1424	7.79
Go #8	9.60	19,436	1224	9.62
spectral-norm
source	secs	mem	gz	cpu secs
C# .NET #5	0.93	36,476	776	3.41
Go	5.33	19,808	417	5.34
C# .NET #8	5.39	26,092	441	5.38
Go #2	1.50	19,808	674	5.68
Go #4	1.45	19,808	555	5.69
C# .NET #2	1.52	31,884	1084	5.76
C# .NET #3	1.54	33,792	890	5.86
mandelbrot
source	secs	mem	gz	cpu secs
C# .NET #7	3.20	63,560	915	12.46
C# .NET #9	3.25	66,864	822	12.60
C# .NET	3.23	66,980	1980	12.62
Go #4	3.76	35,456	912	14.99
Go #3	3.77	35,456	900	15.00
C# .NET #5	4.04	66,356	851	15.80
Go	5.02	33,024	829	20.02
Go #8	26.68	19,440	500	26.74
C# .NET #3	6.82	64,780	722	26.83
C# .NET #8	27.23	26,532	494	27.23
Go #2	6.85	33,152	843	27.28
Go #6	6.89	33,024	707	27.44
C# .NET #2	45.64	31,992	504	45.64
pidigits
source	secs	mem	gz	cpu secs
Go #4	0.82	19,808	689	0.83
C# .NET #6	0.96	33,240	1182	0.95
C# .NET #5	0.93	35,096	990	0.96
Go	1.18	19,808	715	1.20
C# .NET #4	1.36	33,952	1135	1.35
Go #3	1.40	19,808	610	1.44
Go #2	1.84	19,808	740	1.89
Go #8	2.46	19,808	727	2.47
Go #7	4.99	19,808	702	5.61
C# .NET #7	6.59	53,412	579	7.20
regex-redux
source	secs	mem	gz	cpu secs
C# .NET #8	1.43	389,120	1881	2.67
C# .NET	4.60	847,380	641	4.84
Go #5	3.25	321,360	817	5.43
C# .NET #5	2.11	860,544	679	6.32
Go #4	14.61	369,008	832	35.91
C# .NET #4	13.15	960,820	854	44.64
Go	25.37	319,956	749	61.07
Go #3	25.62	371,204	836	61.79
fasta
source	secs	mem	gz	cpu secs
C# .NET #9	1.21	26,424	1512	1.21
Go	3.73	19,808	1055	3.74
Go #2	1.27	19,808	1405	4.06
Go #3	1.51	19,808	1362	4.09
C# .NET #5	1.50	62,072	1702	5.46
C# .NET	1.84	52,300	2113	6.73
C# .NET #8	11.10	26,212	883	11.12
Go #8	18.27	19,440	838	18.46
k-nucleotide
source	secs	mem	gz	cpu secs
C# .NET	3.04	184,820	2046	10.53
C# .NET #6	5.06	187,908	1615	12.77
Go #7	7.63	163,072	1613	28.79
Go #3	8.18	145,280	1729	29.88
Go #6	8.21	145,152	1596	30.01
Go #4	9.16	140,032	1552	31.38
C# .NET #7	40.69	762,328	1449	41.14
C# .NET #4	11.67	778,008	1725	41.58
reverse-complement
source	secs	mem	gz	cpu secs
C# .NET #8	0.56	736,084	2641	1.35
Go #2	2.19	800,640	614	2.29
Go #3	2.48	800,384	609	2.57
C# .NET	2.97	798,004	1130	3.15
Go #6	1.91	1,244,508	1340	3.40
C# .NET #5	2.64	1,026,620	1620	3.67
C# .NET #6	1.64	1,027,256	1627	3.95
C# .NET #7	1.56	941,012	1312	4.23
C# .NET #3	7.31	1,571,904	934	11.48
Go #5		Bad Output
Go		Failed
binary-trees
source	secs	mem	gz	cpu secs
C# .NET #8	12.57	1,233,904	601	14.50
C# .NET #7	4.61	1,552,024	706	15.20
C# .NET #2	4.73	1,619,108	717	15.24
C# .NET #3	5.08	1,955,472	688	16.49
C# .NET	5.23	2,107,524	668	16.88
Go #6	27.90	404,096	618	29.26
Go #2	14.17	624,780	672	56.29
Go #3	14.91	326,508	806	58.00
Go #5	14.87	425,960	957	58.15
Go	32.01	243,192	488	59.78
Go #7	32.52	248,604	531	61.47
C# .NET #6		Make Error
C# .NET	.NET SDK 8.0.301 Host Version: 8.0.6 Commit: 3b8b000a0e <OutputType>Exe <TargetFramework>net8.0 <ImplicitUsings>enable <Nullable>enable <AllowUnsafeBlocks>true <ServerGarbageCollection>true <ConcurrentGarbageCollection>true <PublishAot>false
Go	go version go1.23.1 linux/amd64 GOAMD64=v2