Julia versus Intel Fortran

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
* Julia #2	8.59	31.99	333,136	1077	0.12
* Julia #3	9.44	35.60—35.68	333,103	896	0.12
Intel Fortran #3	9.67	38.56	12,128	1164	5.02
Intel Fortran	40.21	40.21	2,179	608	3.95
Julia	42.56	42.61	309,703	441	0.10
n-body
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
Intel Fortran #5	3.39	3.40	2,146	1669	4.48
Julia #5	3.80	3.84—3.96	345,936	1129	0.11
Intel Fortran #2	4.46	4.42—4.69	2,146	1507	4.33
Intel Fortran	4.55	4.55	2,142	1400	4.41
Intel Fortran #3	4.72	4.69—4.82	2,154	1311	4.43
Intel Fortran #6	4.99	4.64—6.08	2,052	1530	4.43
Julia #4	7.17	7.23	415,039	1168	0.13
Julia #3	8.05	8.10—8.14	415,158	1548	0.11
Julia #2	28.79	29.10—29.76	415,015	1084	0.09
Intel Fortran #4		Bad Output
spectral-norm
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
Intel Fortran #2	2.67	2.67	2,331	520	5.05
Intel Fortran #3	0.72	2.88—2.92	5,214	644	4.80
Julia #4	1.30	3.72	315,802	435	0.14
Julia #2	2.83	5.80—5.84	414,999	377	0.09
mandelbrot
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
Julia #7	1.53	4.86	357,155	629	0.10
Julia #2	1.56	4.96	356,286	634	0.12
Julia #3	1.61	5.16—5.20	376,521	589	0.13
Julia #4	2.07	5.19	368,177	583	0.12
Julia #5	1.76	5.84	381,854	580	0.12
Julia #6	2.25	5.88	368,796	571	0.08
Intel Fortran #6	2.72	8.55	85,975	669	4.13
Intel Fortran #7	4.09	16.19	85,639	965	5.17
Intel Fortran #4	9.89	25.29—25.33	86,360	626	3.95
Julia	26.66	26.72	339,251	379	0.09
Intel Fortran #5	32.66	32.67	47,174	528	3.72
fasta
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
Julia #2	1.28	1.32	317,960	1094	0.06
Intel Fortran #4	1.36	1.37	2,142	1355	4.44
Julia #5	2.67	2.72	334,729	957	0.12
Julia #4	2.73	2.77	320,463	1053	0.12
* Julia #7	1.98	4.86—5.21	405,914	1189	0.10
* Julia #6	2.25	4.70—4.91	391,623	1213	0.13
Intel Fortran	6.01	6.05—6.11	2,146	1193	4.34
Intel Fortran #3	6.53	6.57—6.65	2,142	1217	4.47
Julia #3	11.67	11.72—11.76	318,525	901	0.10
k-nucleotide
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
Julia #6	6.82	14.29—14.70	524,403	965	0.08
Julia #7	9.91	24.02—24.48	576,082	1379	0.10
Julia	132.16	133.46—134.30	1,696,596	703	0.13
Intel Fortran		Empty
reverse-complement
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
Julia #7	1.75	1.83	1,128,034	531	0.12
Julia #9	2.08	2.17	1,330,057	456	0.12
Intel Fortran	3.35	3.36	1,012,519	1026	4.53
Julia #2	29.38	29.83—30.87	2,259,771	464	0.13
Intel Fortran #2	45.22	45.34—45.58	790,307	778	4.10
binary-trees [ Contentious. Different approaches. ]
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
Intel Fortran #2	2.24	6.89—7.00	148,124	1155	4.32
Julia #2	12.60	13.45—14.61	552,776	430	0.11
Julia #4	14.42	15.81—15.87	551,617	378	0.07
Julia #3	7.34	19.54—21.11	569,876	640	0.12
Intel Fortran	32.74	32.78—32.88	540,066	780	3.98
Julia #5	22.15	60.91—62.04	1,392,615	396	0.08
pidigits [ Contentious. Different libraries. ]
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
Intel Fortran #4	0.74	0.74	6,590	987	3.94
* Julia #3	1.13	1.24	307,601	512	0.12
* Julia #2	1.24	1.31	315,621	686	0.13
Julia #4	3.76	3.86—3.92	414,806	531	0.11
regex-redux [ Contentious. Different libraries. ]
	elapsed	Mean or 95% CI
source	secs	cpu secs	mem	gz	make
Intel Fortran	0.98	3.11—3.15	189,305	2229	4.80
* Julia #5	1.91	3.18	519,856	766	0.12
* Julia #4	2.00	3.26—3.33	522,338	772	0.09
* Julia #3	2.18	3.58	671,347	630	0.12
Julia	5.19	5.26—5.35	714,330	414	0.11
Julia	julia version 1.11.1
Intel Fortran	ifx (IFX) 2024.1.0 20240308