Try to exclude startup time:
# perl/pdl
use PDL;
use Benchmark ':hireswallclock';
$PDL::BIGPDL = 1;
print timeit(1000, sub {
my $x = random(double,100,50,50);
my $y = random(double,100,50,50);
$z1 = $x + $y;
$z2 = $x / $y;
})->real, "\n";
# python3/numpy
import numpy as np
def test():
"""test function"""
X = np.random.rand(100,50,50)
Y = np.random.rand(100,50,50)
Z1 = X+Y
Z2 = X/Y
if __name__ == '__main__':
import timeit
print(timeit.timeit("test()", setup="from __main__ import test", number =
1000))
On 9/20/20 5:11 PM, 钟巍 wrote:
> Hi all,
> I am new to PDL. I want to know where is PDL performance.
>
> I test on same virtial machine with lastest version of perl and python in
> Ubuntu 20.04 LTS
>
> Perl version:v5.32.0
> Python version:3.8.5
> I have a little disappoint about the result:
> Perl slower a lot than python.
>
> weizhong@weizhong-VirtualBox:~/Git/compare-pdl_numpy$ ./compare.csh
>
> Python test1.py:
> 0.5u 1.0s 0:01.84 88.0% 0+0k 0+0io 0pf+0w
>
> Perl test1.pl:
> 1.2u 2.0s 0:05.83 55.5% 0+0k 19064+0io 907pf+0w
>
> Python test1.py:
> 0.7u 0.7s 0:02.54 60.2% 0+0k 52008+0io 141pf+0w
>
> Perl test1.pl:
> 1.3u 1.9s 0:05.28 61.3% 0+0k 30432+0io 1005pf+0w
>
> Perl Code(test1.pl):
>
> #!/home/weizhong/tools/perl-5.32.0/perl use PDL; $PDL::BIGPDL = 1; $X =
> zeroes(1000,500,500); $Y = ones(1000,500,500);
> $Z1 = $X + $Y; $Z2 = $X / $Y;
> [download]
> <https://www.perlmonks.org/?abspart=1;displaytype=displaycode;part=1;node_id=11121959>
>
> Python Code(test1.py):
>
> #!/home/weizhong/tools/Python-3.8.5/python import numpy as np X =
> np.zeros((1000,500,500)) Y = np.ones((1000,500,500))
> Z1 = X+Y Z2 = X/Y
> [download]
> <https://www.perlmonks.org/?abspart=1;displaytype=displaycode;part=2;node_id=11121959>
>
> compare.csh:
>
> #!/bin/csh -f echo "Python test1.py:"; time ./test1.py echo "Perl test1.pl:";
> time ./test1.pl echo "Python test1.py:";
> time ./test1.py echo "Perl test1.pl:"; time ./test1.pl
>
>
>
>
>
>
>
> _______________________________________________
> pdl-general mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/pdl-general
>
_______________________________________________
pdl-general mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/pdl-general
