C++ g++ versus Java naot

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
	elapsed				Mean or 95% CI
source	secs	mem	gz	make	cpu secs
* C++ g++ #6	3.33	5,800	1535	4.64	13.12
* C++ g++ #7	14.06	2,449	1156	2.95	14.04—14.11
C++ g++ #5	7.86	5,792	987	3.67	30.73—30.82
C++ g++ #4	8.91	5,710	1445	12.14	34.99—35.47
Java naot #3	35.64	11,809	1264	93.87	35.64
C++ g++ #2	9.14	5,698	1446	11.86	35.88—36.26
Java naot	9.07	12,694	1289	94.68	35.94
C++ g++ #3	37.89	2,351	600	2.70	37.90—37.99
C++ g++	10.53	5,534	1065	3.88	41.25—41.55
Java naot #2	44.40	10,772	520	96.06	44.41—44.45
Java naot #8	51.31	11,039	517	94.87	51.30
n-body
	elapsed				Mean or 95% CI
source	secs	mem	gz	make	cpu secs
* C++ g++ #0	2.15	2,417	1933	3.66	2.16
* C++ g++ #7	4.09	5,124	1815	4.18	4.12—4.17
C++ g++ #9	5.15	2,486	1536	3.03	5.17
C++ g++ #3	5.33	2,482	1402	2.85	5.34
* C++ g++ #4	5.46	2,482	1434	2.83	5.46
Java naot #4	6.01	15,213	1495	143.53	6.01
* C++ g++ #2	6.02	2,490	1524	3.04	6.02—6.10
C++ g++ #5	6.33	2,478	1544	2.92	6.35
C++ g++	6.62	2,499	1666	3.15	6.64
Java naot #3	6.74	15,479	1436	145.21	6.74
Java naot #2	6.75	15,483	1430	142.57	6.74
C++ g++ #6	6.94	2,499	1674	2.98	6.93—6.98
Java naot	7.14	17,842	1437	143.68	7.14
Java naot #8	7.18	15,483	1322	144.80	7.18
Java naot #5	7.21	15,282	1435	144.21	7.22
spectral-norm
	elapsed				Mean or 95% CI
source	secs	mem	gz	make	cpu secs
* C++ g++ #6	0.72	3,981	1050	3.08	2.86
* C++ g++ #5	1.33	5,820	1050	2.86	5.28
C++ g++	5.34	5,292	459	3.75	5.34
Java naot	5.35	18,485	521	145.31	5.34
Java naot #8	5.34	16,253	453	143.46	5.34
Java naot #2	1.45	19,415	956	143.96	5.70
Java naot #3	1.46	21,246	762	147.49	5.71
C++ g++ #7	1.53	4,071	1284	2.71	6.07
mandelbrot
	elapsed				Mean or 95% CI
source	secs	mem	gz	make	cpu secs
* C++ g++ #4	0.89	37,941	3554	5.04	3.46
* C++ g++	0.90	37,626	1797	3.59	3.48
* C++ g++ #6	0.98	37,908	1014	4.36	3.87
C++ g++ #0	2.36	38,281	2752	4.60	9.31
* C++ g++ #7	4.87	38,048	749	3.03	13.30
C++ g++ #5	13.47	36,884	596	2.76	13.49
C++ g++ #9	3.53	37,863	732	3.03	13.59
Java naot #6	3.94	45,265	808	95.80	15.63
Java naot #4	4.25	76,661	667	97.10	15.75
Java naot #2	3.99	45,236	802	95.53	15.81
C++ g++ #2	16.96	36,704	700	3.28	16.96
C++ g++ #3	27.38	5,181	421	3.69	27.38
Java naot #8	28.53	11,252	441	95.29	28.54
Java naot	30.53	15,221	671	146.09	30.53
Java naot #3	7.78	49,762	910	147.17	30.95
fasta
	elapsed				Mean or 95% CI
source	secs	mem	gz	make	cpu secs
C++ g++ #9	0.78	6,214	2758	6.43	1.56
C++ g++ #2	1.85	5,108	1129	2.89	1.85
C++ g++	1.93	5,104	1064	2.98	1.93
C++ g++ #3	2.63	5,284	1311	3.33	2.63
C++ g++ #7	0.88	6,304	2711	4.58	3.06
Java naot #6	1.10	17,334	2549	97.72	3.13
C++ g++ #4	3.34	2,363	1291	3.03	3.34
Java naot #4	3.64	11,084	1528	97.22	3.64
C++ g++ #5	1.07	7,012	2345	3.90	3.69—3.73
Java naot #5	1.12	17,580	2478	94.92	3.80
C++ g++ #6	1.08	7,127	2326	3.72	3.90
Java naot #2	5.69	11,006	1259	98.09	5.69
Java naot #8	10.78	62,452	894	97.74	10.80—10.94
k-nucleotide
	elapsed				Mean or 95% CI
source	secs	mem	gz	make	cpu secs
C++ g++ #2	2.02	162,349	1634	7.41	6.05—6.54
C++ g++ #3	4.19	171,622	1280	5.17	13.83—14.44
C++ g++	7.04	778,510	1452	6.55	15.17—15.69
Java naot #6	8.32	325,120	1614	144.00	28.41—28.47
Java naot #3	8.35	324,473	1642	146.37	28.48—28.52
Java naot #4	29.05	161,108	1887	146.45	29.20—29.56
Java naot #5	14.43	172,257	2225	143.84	36.09—37.17
Java naot #8	108.95	594,534	786	146.34	109.16—109.81
Java naot		Empty
reverse-complement
	elapsed				Mean or 95% CI
source	secs	mem	gz	make	cpu secs
* C++ g++ #2	0.76	514,101	2099	4.30	0.76
Java naot #6	3.87	2,049,520	760	96.54	4.59
Java naot #5	5.78	781,451	1115	95.90	5.78
Java naot #4	6.37	1,554,502	656	96.72	6.38
C++ g++	6.55	1,006,805	599	3.43	6.55—6.68
C++ g++ #5	37.66	792,846	704	3.40	37.65—37.69
Java naot #3		Bad Output
Java naot #7		Bad Output
C++ g++ #6		Bad Output
C++ g++ #3		Bad Output
binary-trees
	elapsed				Mean or 95% CI
source	secs	mem	gz	make	cpu secs
C++ g++ #7	1.01	175,108	896	7.50	3.46—3.62
C++ g++ #5	1.17	208,171	891	3.87	4.12—4.17
C++ g++ #9	1.76	140,571	815	4.05	4.66—4.82
C++ g++ #6	1.93	273,973	851	4.98	4.90—5.09
Java naot #3	4.84	296,223	546	95.62	4.86—4.94
Java naot #6	5.05	294,187	535	96.50	5.09—5.17
C++ g++ #3	2.28	273,715	951	4.79	5.06—5.10
Java naot #2	5.12	286,675	558	96.82	5.16—5.26
C++ g++ #4	2.22	273,977	826	5.16	5.20—5.33
Java naot #4	5.55	305,353	846	95.40	5.54—5.72
Java naot #7	3.94	337,699	841	101.24	7.30—7.49
Java naot #8	7.75	291,021	596	100.20	7.77—7.81
C++ g++	2.69	1,896,727	760	5.34	9.43—9.52
C++ g++ #2	22.77	274,080	514	3.52	22.81—23.05
pidigits
	elapsed				Mean or 95% CI
source	secs	mem	gz	make	cpu secs
C++ g++ #4	0.72	6,496	521	3.45	0.72
* C++ g++ #5	0.73	6,300	804	3.34	0.73
Java naot	8.42	62,415	807	96.29	8.45
Java naot #2		Empty
Java naot #3		Empty
regex-redux
	elapsed				Mean or 95% CI
source	secs	mem	gz	make	cpu secs
C++ g++ #6	1.14	285,639	2856	5.06	2.25
C++ g++ #3	12.37	222,614	859	12.29	18.03—18.68
Java naot	11.28	271,626	875	105.78	20.64—20.75
Java naot #6	7.56	456,479	746	102.10	20.98—21.02
Java naot #3	7.47	368,591	935	101.59	21.06—21.12
C++ g++		Empty
Java naot #2		Empty
C++ g++ #2		Empty
C++ g++ #5		Empty
C++ g++ #4		Empty
C++ g++	g++ (Ubuntu 14.2.0-4ubuntu2) 14.2.0
Java naot	native-image 23.0.2 2025-01-21 GraalVM Runtime Environment Oracle GraalVM 23.0.2+7.1