C++ g++ versus Java GraalVM 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++ g++ #6	3.31	19,760	1535	13.11
* C++ g++ #7	14.03	19,760	1156	14.03
C++ g++ #5	7.85	19,760	987	30.68
Java GraalVM #3	34.03	90,752	1264	34.21
C++ g++ #4	8.92	19,760	1445	35.00
C++ g++ #2	9.13	19,760	1446	35.73
Java GraalVM	9.33	91,152	1289	36.72
C++ g++ #3	37.88	19,760	600	37.87
Java GraalVM #2	38.48	91,636	520	38.63
C++ g++	10.49	19,760	1065	41.21
Java GraalVM #8	42.18	91,368	517	42.35
n-body
source	secs	mem	gz	cpu secs
* C++ g++ #0	2.15	19,760	1933	2.15
* C++ g++ #7	4.11	19,760	1815	4.11
C++ g++ #9	5.14	19,760	1536	5.14
C++ g++ #3	5.32	19,760	1402	5.32
* C++ g++ #4	5.45	19,760	1434	5.45
* C++ g++ #2	6.02	19,352	1524	6.01
C++ g++ #5	6.32	19,760	1544	6.32
Java GraalVM #4	6.22	90,128	1495	6.36
C++ g++	6.61	19,760	1666	6.61
Java GraalVM #5	6.47	90,344	1435	6.61
C++ g++ #6	6.93	19,760	1674	6.93
Java GraalVM #3	6.89	89,592	1436	7.03
Java GraalVM #2	6.90	89,600	1430	7.03
Java GraalVM #8	7.11	88,832	1322	7.24
Java GraalVM	7.31	89,724	1437	7.44
spectral-norm
source	secs	mem	gz	cpu secs
* C++ g++ #6	0.73	19,760	1050	2.86
* C++ g++ #5	1.33	19,760	1050	5.28
C++ g++	5.33	19,760	459	5.33
C++ g++ #7	1.52	19,512	1284	6.04
Java GraalVM #3	1.64	92,416	762	6.14
Java GraalVM #2	1.80	92,800	956	6.83
Java GraalVM #8	11.19	91,648	453	11.38
mandelbrot
source	secs	mem	gz	cpu secs
* C++ g++ #4	0.89	35,344	3554	3.45
* C++ g++	0.89	34,952	1797	3.47
* C++ g++ #6	0.98	35,080	1014	3.87
C++ g++ #0	2.35	35,476	2752	9.30
* C++ g++ #7	4.86	35,176	749	13.28
C++ g++ #5	13.44	34,636	596	13.43
C++ g++ #9	3.52	35,120	732	13.55
Java GraalVM #4	4.37	138,740	667	16.04
Java GraalVM #2	4.14	132,372	802	16.30
Java GraalVM #6	4.16	129,024	808	16.36
C++ g++ #2	16.95	34,636	700	16.94
Java GraalVM	26.60	90,356	671	26.78
C++ g++ #3	27.37	19,760	421	27.36
Java GraalVM #3	7.27	127,788	910	28.79
Java GraalVM #8	29.95	93,304	441	30.20
fasta
source	secs	mem	gz	cpu secs
C++ g++ #9	0.78	19,352	2758	1.54
C++ g++ #2	1.84	19,760	1129	1.84
C++ g++	1.92	19,760	1064	1.92
C++ g++ #3	2.63	19,760	1311	2.63
C++ g++ #7	0.87	19,760	2711	3.05
C++ g++ #4	3.32	19,760	1291	3.32
Java GraalVM #6	1.28	99,840	2549	3.66
C++ g++ #5	1.06	19,760	2345	3.66
Java GraalVM #5	1.27	97,536	2478	3.75
C++ g++ #6	1.07	19,760	2326	4.01
Java GraalVM #4	3.55	142,080	1528	4.56
Java GraalVM #2	4.63	142,480	1259	5.61
Java GraalVM #8	15.83	96,000	894	16.43
k-nucleotide
source	secs	mem	gz	cpu secs
C++ g++ #2	2.01	156,592	1634	5.98
Java GraalVM	4.31	475,296	1821	13.63
C++ g++ #3	4.19	165,580	1280	13.94
C++ g++	6.96	757,156	1452	14.75
Java GraalVM #6	7.69	471,456	1614	27.24
Java GraalVM #3	7.79	472,096	1642	27.63
Java GraalVM #4	33.45	239,724	1887	34.10
Java GraalVM #5	15.99	248,224	2225	38.12
Java GraalVM #8	84.32	1,586,392	786	87.17
reverse-complement
source	secs	mem	gz	cpu secs
* C++ g++ #2	0.74	499,916	2099	0.74
Java GraalVM #6	3.44	2,080,968	760	4.23
C++ g++ #6	3.30	1,517,824	1827	4.38
Java GraalVM #5	4.95	1,145,720	1115	5.31
Java GraalVM #4	5.69	1,906,560	656	5.99
C++ g++	6.52	980,156	599	6.51
Java GraalVM #7	24.65	1,180,012	1654	12.56
C++ g++ #5	37.59	771,632	704	37.58
Java GraalVM #3		Bad Output
C++ g++ #3		Bad Output
binary-trees
source	secs	mem	gz	cpu secs
C++ g++ #7	0.97	201,512	896	3.40
C++ g++ #5	1.16	200,724	891	4.10
C++ g++ #9	1.74	136,120	815	4.63
C++ g++ #3	1.91	265,636	951	4.74
C++ g++ #6	1.91	266,120	851	4.77
C++ g++ #4	2.22	266,136	826	5.20
Java GraalVM #2	5.11	1,948,200	558	6.99
Java GraalVM #4	5.42	1,815,132	846	7.22
Java GraalVM #6	6.00	1,794,592	535	7.91
Java GraalVM #3	5.95	1,880,164	546	8.60
Java GraalVM #7	2.81	1,850,008	841	8.76
Java GraalVM #8	7.19	1,757,812	596	9.15
C++ g++	2.65	2,153,044	760	9.23
C++ g++ #2	22.83	265,840	514	22.82
pidigits
source	secs	mem	gz	cpu secs
C++ g++ #4	0.71	19,760	521	0.71
* C++ g++ #5	0.73	19,760	804	0.73
Java GraalVM #3	0.84	87,552	770	0.96
Java GraalVM #2	1.34	96,384	944	1.53
Java GraalVM	7.08	528,896	807	8.13
regex-redux
source	secs	mem	gz	cpu secs
C++ g++ #6	1.15	276,336	2856	2.24
Java GraalVM #2	1.56	408,236	2201	3.36
Java GraalVM	7.95	617,884	875	15.48
Java GraalVM #3	4.93	646,312	935	16.03
Java GraalVM #6	5.21	1,281,824	746	16.40
C++ g++ #3	12.38	215,640	859	17.95
C++ g++		Make Error
C++ g++ #2		Make Error
C++ g++ #5		Make Error
C++ g++ #4		Make Error
C++ g++	g++ (Ubuntu 14.2.0-4ubuntu2) 14.2.0
Java GraalVM	openjdk 23 2024-09-17 Java HotSpot(TM) 64-Bit Server VM OpenJDK GraalVM CE (build 23+37-jvmci-b01, mixed mode, sharing)