Chapel versus Intel Fortran 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
Chapel #2	9.34	19,436	737	37.22
Intel Fortran #3	9.78	19,648	1164	39.00
Intel Fortran	40.33	19,648	608	40.33
n-body
source	secs	mem	gz	cpu secs
Intel Fortran #5	3.39	19,648	1669	3.39
Chapel #3	3.86	19,436	983	3.87
Chapel #4	4.34	19,436	1027	4.34
Intel Fortran #2	4.46	19,776	1507	4.46
Intel Fortran	4.55	19,648	1400	4.55
Intel Fortran #3	4.71	19,648	1311	4.71
Intel Fortran #6	5.01	19,648	1530	5.01
Chapel #2	5.67	19,436	977	5.67
Intel Fortran #4		Bad Output
spectral-norm
source	secs	mem	gz	cpu secs
Intel Fortran #2	2.67	19,648	520	2.66
Chapel #2	0.73	19,436	348	2.88
Intel Fortran #3	0.73	19,648	644	2.88
Chapel	1.46	19,436	322	5.79
mandelbrot
source	secs	mem	gz	cpu secs
Chapel #3	1.29	37,760	582	5.12
Intel Fortran #6	2.71	79,488	669	8.55
Intel Fortran #7	4.08	79,508	965	16.18
Intel Fortran #4	9.85	79,744	626	25.23
Chapel	6.63	37,632	447	26.46
Intel Fortran #5	32.58	43,648	528	32.58
fasta
source	secs	mem	gz	cpu secs
Chapel #6	0.79	19,436	1108	0.80
Intel Fortran #4	1.34	19,648	1355	1.34
Chapel #5	1.03	19,436	1391	3.78
Chapel #3	4.02	19,436	1219	4.03
Intel Fortran	5.83	19,648	1193	5.83
Intel Fortran #3	6.19	19,648	1217	6.19
k-nucleotide
source	secs	mem	gz	cpu secs
Chapel #4	4.97	191,872	1071	17.19
Chapel #3	5.89	192,000	1040	20.88
Intel Fortran		Make Error
reverse-complement
source	secs	mem	gz	cpu secs
Chapel #9	0.92	1,057,024	1260	2.65
Chapel #5	1.83	2,133,376	554	3.18
Chapel #3	1.81	2,121,216	709	3.18
Intel Fortran	3.33	986,304	1026	3.33
Intel Fortran #2	42.90	769,748	778	42.89
binary-trees
source	secs	mem	gz	cpu secs
Intel Fortran #2	2.22	140,544	1155	6.86
Chapel #5	2.04	1,775,616	646	7.28
Chapel #3	8.47	300,672	494	25.56
Chapel #4	7.11	477,824	489	26.09
Intel Fortran	32.59	525,824	780	32.59
pidigits
source	secs	mem	gz	cpu secs
* Chapel #4	0.75	19,436	515	0.76
Chapel #2	0.76	19,436	423	0.76
Intel Fortran #4	0.88	19,648	987	0.88
regex-redux
source	secs	mem	gz	cpu secs
Intel Fortran	0.96	179,724	2229	3.09
Chapel #3	3.03	404,608	503	3.96
Chapel #2	3.53	404,608	498	4.47
Chapel	chpl version 2.2.0 built with LLVM version 18.1.3 Copyright 2020-2024 Hewlett Packard Enterprise Development LP Copyright 2004-2019 Cray Inc.
Intel Fortran	ifx (IFX) 2024.1.0 20240308