C clang versus Lisp SBCL

How the programs are written matters! Always look at the source code.

If the fastest programs are flagged * possible hand-written vector instructions or "unsafe" or naked ffi, does the host language matter? You might be more interested in the less optimised programs — more seconds, less gz source code.

fannkuch-redux
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
* C clang #6	2.25	8.88	2,933	1582	5.56
* C clang #4	13.39	13.39	2,343	1190	5.32
Lisp SBCL #5	30.88	30.86	58,196	689	2.50
C clang #5	8.10	32.01—32.15	4,792	917	5.61
* C clang #2	8.68	34.14—34.46	2,703	1563	5.59
C clang #3	34.14	34.19—34.26	2,351	574	5.16
Lisp SBCL #3	36.28	36.26	37,208	833	2.57
C clang #8	36.35	36.38—36.47	2,347	483	5.08
C clang	36.52	36.54—36.63	2,347	514	5.39
Lisp SBCL #4	9.41	36.96	38,060	1531	2.49
Lisp SBCL #2	48.05	48.03	27,795	525	2.47
n-body
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
* C clang #9	2.20	2.20	2,494	1639	6.10
* C clang #5	4.86	4.86	2,417	1436	5.03
C clang #6	5.17	5.17	2,970	1186	5.19
C clang	5.38	5.40	2,974	1179	5.35
C clang #2	5.43	5.44	2,982	1270	5.30
* C clang #4	5.60	5.61	2,941	1398	6.20
C clang #8	5.70	5.70—5.75	2,941	1195	5.20
C clang #3	6.13	6.13	2,978	1214	5.65
C clang #7	6.78	6.79	2,974	1250	5.16
Lisp SBCL #2	7.83	7.82	27,808	1408	2.51
Lisp SBCL	9.28	9.27	27,554	1373	2.64
spectral-norm
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
* C clang #6	0.39	1.52—1.56	4,706	1203	6.40
* C clang #5	0.73	2.87	5,206	576	5.85
* C clang #4	0.73	2.88—2.92	5,366	1145	5.86
* C clang #2	0.73	4.15—6.50	5,411	941	6.35
Lisp SBCL #6	5.36	5.35	29,557	512	2.47
Lisp SBCL	5.37	5.35	29,782	639	2.66
C clang #8	5.41	5.42	3,211	389	5.20
C clang #3	1.45	5.74	5,390	470	5.53
Lisp SBCL #9	1.48	5.72	28,799	799	2.56
Lisp SBCL #7	1.47	5.72	29,258	769	2.58
Lisp SBCL #2	1.48	5.72	29,274	920	2.55
Lisp SBCL #3	1.47	5.72	29,598	893	2.50
* C clang #7	1.85	8.31—9.99	5,399	906	6.27
mandelbrot
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
C clang #9	1.23	4.91	36,614	700	5.36
C clang #5	1.54	6.10	36,893	788	5.17
* C clang #4	3.49	13.85—13.93	36,458	805	5.13
* C clang	3.50	13.95	35,627	828	5.30
* C clang #7	3.53	14.02	36,758	1000	5.70
* C clang #3	3.56	14.16—14.22	35,484	769	5.23
Lisp SBCL	4.53	16.56—16.61	60,678	2478	3.27
Lisp SBCL #4	4.20	16.68	60,654	2453	3.17
C clang #8	25.48	25.50—25.55	2,359	412	5.04
Lisp SBCL #3	9.82	26.17—26.21	60,191	900	2.59
* C clang #6		Empty
fasta
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
C clang #3	0.78	0.78	2,257	1469	5.10
C clang #5	1.20	1.20	2,208	1286	5.41
C clang #2	2.44	2.44	2,200	1299	5.46
C clang #6	1.05	3.05	5,104	1936	5.36
C clang #7	0.83	3.28—3.32	5,947	2276	5.40
C clang	3.47	3.47	2,396	1213	5.07
Lisp SBCL #6	4.51	4.49	28,107	1763	2.75
Lisp SBCL #3	5.32	5.33	27,558	1592	2.59
C clang #8	8.09	8.19—8.30	2,200	839	4.95
Lisp SBCL #2	8.93	8.92	27,910	1628	2.52
Lisp SBCL	9.06	9.08	30,581	1430	2.65
C clang #4		Empty
k-nucleotide
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
C clang	6.34	13.99—14.10	134,189	1512	5.85
Lisp SBCL #4	15.75	15.78—16.30	168,317	2292	2.80
Lisp SBCL #5	15.84	15.85—15.91	169,165	2323	2.88
Lisp SBCL #6	8.79	31.23—32.50	536,506	2485	2.61
Lisp SBCL	10.80	33.59	589,226	2431	2.54
Lisp SBCL #2	44.39	44.57—45.38	528,470	1291	2.57
Lisp SBCL #3	44.68	45.09—45.91	528,470	1297	2.60
reverse-complement
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
* C clang #7	0.46	0.65	514,040	1899	6.27
C clang #9	0.48	0.72	514,277	1551	5.42
C clang #2	1.19	1.72	1,021,899	757	5.27
C clang #5	2.01	2.07—2.12	1,020,629	654	5.18
* C clang #4	3.79	3.80	514,073	716	5.07
C clang #6	1.08	4.26—4.30	699,249	828	5.14
Lisp SBCL	5.51	5.50	1,538,748	911	2.58
Lisp SBCL #2		Timed Out
binary-trees [ Contentious. Different approaches. ]
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
C clang #2	1.68	5.26—6.08	176,222	816	2.58
C clang #3	1.92	5.90	138,723	842	5.80
Lisp SBCL #3	2.83	7.36—7.54	641,151	938	2.54
Lisp SBCL	9.60	9.62—9.68	665,092	595	2.51
C clang	17.86	17.75—18.31	271,938	660	5.22
C clang #5	9.24	33.44—33.54	361,550	914	5.00
pidigits [ Contentious. Different libraries. ]
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
C clang #2	0.74	0.74	3,990	422	5.46
C clang	0.75	0.75	3,719	459	5.06
Lisp SBCL #4	3.37	3.39	817,934	495	2.62
Lisp SBCL #3	3.38	3.39	817,897	499	2.59
Lisp SBCL #2	6.00	6.01	836,059	655	2.49
regex-redux [ Contentious. Different libraries. ]
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
C clang #5	0.84	2.84	159,756	1403	5.28
C clang #2	3.23	3.23	106,799	1121	5.07
C clang #4	1.00	3.84—3.89	159,789	1237	5.30
C clang #3	1.76	4.33—4.37	109,871	1273	5.44
Lisp SBCL #4	13.84	29.66—29.75	1,089,716	1977	3.35
C clang	Ubuntu clang version 19.1.1 (1ubuntu1)
Lisp SBCL	SBCL 2.4.8