The Computer Language
Benchmarks Game

Intel Fortran versus C gcc fastest programs

Always look at the source code.

These are only the fastest programs. Do some of them use manually vectorized SIMD? Look at the other programs. They may seem more-like a fair comparison to you.

spectral-norm
source secs mem gz busy cpu load
Intel Fortran 0.72 1,776 638 2.85 100% 100% 99% 99%
C gcc 0.72 1,100 569 2.86 100% 99% 100% 100%
pidigits
source secs mem gz busy cpu load
Intel Fortran 0.74 4,004 981 0.75 0% 0% 100% 1%
C gcc 0.73 2,848 416 0.75 1% 100% 1% 0%
n-body
source secs mem gz busy cpu load
Intel Fortran 4.22 12 1524 4.34 100% 1% 1% 2%
C gcc 4.02 796 1250 4.06 100% 0% 0% 1%
mandelbrot
source secs mem gz busy cpu load
Intel Fortran 1.42 36,184 957 5.63 99% 100% 99% 99%
C gcc 1.27 31,692 1135 5.08 100% 100% 100% 99%
regex-redux
source secs mem gz busy cpu load
Intel Fortran 0.99 176,200 2225 3.06 68% 73% 71% 98%
C gcc 0.80 152,196 1397 2.03 48% 100% 54% 53%
binary-trees
source secs mem gz busy cpu load
Intel Fortran 2.38 133,752 1148 7.45 100% 70% 70% 73%
C gcc 1.79 168,760 809 5.35 64% 64% 71% 100%
fannkuch-redux
source secs mem gz busy cpu load
Intel Fortran 10.16 11,048 1158 40.55 100% 100% 100% 100%
C gcc 7.52 836 910 29.37 99% 100% 93% 99%
fasta
source secs mem gz busy cpu load
Intel Fortran 2.06 12 1351 2.06 0% 0% 0% 100%
C gcc 0.78 1,220 1463 0.79 1% 0% 0% 100%
reverse-complement
source secs mem gz busy cpu load
Intel Fortran 3.90 985,352 1019 4.11 1% 100% 4% 1%
C gcc 0.86 698,264 820 1.27 1% 18% 100% 28%
k-nucleotide
source secs mem gz busy cpu load
Intel Fortran   Make Error
C gcc 3.81 130,112 1506 12.18 54% 87% 79% 100%
Intel Fortran

Intel(R) Fortran Intel(R) 64 Compiler
for applications runn304 Build 20200925_0ing on Intel(R) 64,
Version 19.1.3.304 Build 20200925_000000
Copyright (C) 1985-2020 Intel Corporation. All rights reserved.
FOR NON-COMMERCIAL USE ONLY

C gcc

gcc (Ubuntu 10.2.0-13ubuntu1) 10.2.0