C clang versus Julia 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 clang #6	2.24	19,772	1582	8.86
* C clang #4	13.37	19,772	1190	13.37
* Julia #2	8.49	251,248	1077	31.91
C clang #5	8.09	19,772	917	31.94
* C clang #2	8.67	19,772	1563	34.02
C clang #3	34.16	19,772	574	34.15
* Julia #3	9.33	248,484	896	35.56
C clang #8	36.39	19,492	483	36.38
C clang	36.51	19,772	514	36.50
Julia	42.59	226,292	441	42.67
n-body
source	secs	mem	gz	cpu secs
* C clang #9	2.20	19,772	1639	2.20
Julia #5	3.67	261,584	1129	3.77
* C clang #5	4.86	19,772	1436	4.86
C clang #6	5.16	19,772	1186	5.16
C clang	5.37	19,772	1179	5.37
C clang #2	5.42	19,772	1270	5.42
* C clang #4	5.60	19,772	1398	5.59
C clang #8	5.72	19,492	1193	5.72
C clang #3	6.12	19,772	1214	6.12
Julia #4	6.48	263,596	1168	6.57
C clang #7	6.77	19,772	1250	6.77
Julia #3	6.92	264,476	1548	7.01
Julia #2	28.72	278,196	1084	28.92
spectral-norm
source	secs	mem	gz	cpu secs
* C clang #6	0.38	19,772	1203	1.52
* C clang #4	0.72	19,772	1145	2.86
* C clang #2	0.72	19,772	941	2.87
* C clang #5	0.72	19,772	576	2.88
Julia #4	1.18	232,768	435	3.66
Julia #2	1.76	261,124	377	4.80
C clang #8	5.40	19,772	389	5.40
C clang #3	1.46	19,772	470	5.77
* C clang #7	1.82	19,772	906	7.24
mandelbrot
source	secs	mem	gz	cpu secs
Julia #7	1.41	273,748	629	4.79
C clang #9	1.22	34,332	700	4.85
Julia #2	1.44	272,612	634	4.88
Julia #3	1.50	291,868	589	5.11
Julia #4	1.96	283,940	583	5.12
Julia #5	1.63	296,828	580	5.76
Julia #6	2.12	289,896	571	5.80
C clang #5	1.53	34,864	788	6.09
* C clang #4	3.47	34,328	805	13.82
* C clang	3.49	33,172	828	13.93
* C clang #7	3.53	34,216	1000	14.00
* C clang #3	3.55	33,108	769	14.15
C clang #8	25.27	19,496	412	25.27
Julia	26.55	254,964	379	26.63
* C clang #6		Make Error
fasta
source	secs	mem	gz	cpu secs
C clang #3	0.78	19,772	1469	0.78
C clang #5	1.20	19,772	1286	1.20
Julia #2	1.17	234,156	1094	1.25
C clang #2	2.43	19,616	1299	2.43
Julia #5	2.57	250,416	957	2.66
Julia #4	2.62	236,892	1053	2.72
C clang #6	1.03	19,772	1936	3.03
C clang #7	0.82	19,772	2276	3.27
C clang	3.46	19,772	1213	3.46
* Julia #6	2.12	353,084	1213	4.86
* Julia #7	1.87	348,656	1189	5.33
C clang #8	8.02	19,956	839	8.02
Julia #3	11.61	234,416	901	11.70
C clang #4		Make Error
k-nucleotide
source	secs	mem	gz	cpu secs
C clang	6.30	129,228	1512	13.92
Julia #6	6.03	429,688	965	14.32
Julia #7	8.87	479,756	1379	22.94
Julia	132.60	1,558,404	703	132.21
reverse-complement
source	secs	mem	gz	cpu secs
* C clang #7	0.45	499,996	1899	0.63
C clang #9	0.46	499,976	1551	0.70
C clang #2	1.16	994,536	757	1.69
Julia #7	1.65	1,024,148	531	1.76
C clang #5	2.08	994,108	654	2.07
Julia #9	2.00	1,220,680	456	2.11
* C clang #4	3.74	500,452	716	3.74
C clang #6	1.03	703,416	828	4.07
Julia #2	29.29	1,951,468	464	29.83
binary-trees
source	secs	mem	gz	cpu secs
C clang #2	1.66	170,236	816	5.36
C clang #3	1.89	134,272	842	5.88
Julia #4	10.32	443,600	378	11.22
Julia #2	11.38	441,140	430	12.44
C clang	17.79	264,064	660	17.79
Julia #3	7.08	486,976	640	19.44
C clang #8	19.63	285,536	607	19.62
C clang #5	9.25	351,328	914	33.65
Julia #5	17.97	482,024	396	57.53
pidigits
source	secs	mem	gz	cpu secs
C clang #2	0.74	19,772	422	0.74
C clang	0.74	19,772	459	0.74
* Julia #3	1.04	223,936	512	1.18
* Julia #2	1.14	232,460	686	1.26
Julia #4	2.70	290,468	531	2.83
regex-redux
source	secs	mem	gz	cpu secs
C clang #5	0.82	154,568	1403	2.82
* Julia #5	1.80	431,004	766	3.12
C clang #2	3.22	103,364	1121	3.22
* Julia #4	1.89	433,140	772	3.22
* Julia #3	2.07	578,576	630	3.51
C clang #4	0.98	154,488	1237	3.82
Julia	4.10	606,148	414	4.24
C clang #3	1.75	105,848	1273	4.31
C clang	Ubuntu clang version 18.1.8 (11)
Julia	julia version 1.11.1