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Top Forums Shell Programming and Scripting Parallelize a task that have for Post 302582412 by Chubler_XL on Thursday 15th of December 2011 09:59:07 PM
Old 12-15-2011
Your task is pretty easy to split up into smaller sub tasks so you should try running 10 background jobs and see how it utilises your resources. If your system is still pretty idle increase to 20.

This is much better than running 1000's of tasks when you only have 16 cores as system control overheads (swapping processes in and out, etc) will take most of the resources and not leave much for the actual work.

Code:
doit() {
l=$1
while [ $l -le $2 ]
do
    awk -v F=$l '{ printf $F"," } END { print ""} ' infile > a_$l.t
    let l=l+1
done
}
 
doit 1 100 &
doit 101 200 &
doit 201 300 &
doit 301 400 &
doit 401 500 &
doit 501 600 &
doit 601 700 &
doit 701 800 &
doit 801 900 &
doit 901 1000 &


Last edited by Chubler_XL; 12-15-2011 at 11:06 PM..
 

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Graphics::Primitive::Insets(3pm)			User Contributed Perl Documentation			  Graphics::Primitive::Insets(3pm)

NAME
Graphics::Primitive::Insets - Space between things DESCRIPTION
Graphics::Primitive::Insets represents the amount of space that surrounds something. This object can be used to represent either padding or margins (in the CSS sense, one being inside the bounding box, the other being outside) SYNOPSIS
use Graphics::Primitive::Insets; my $insets = Graphics::Primitive::Insets->new({ top => 5, bottom => 5, left => 5, right => 5 }); METHODS
Constructor new Creates a new Graphics::Primitive::Insets. Instance Methods as_array Return these insets as an array in the form of top, right, bottom and left. bottom Set/Get the inset from the bottom. equal_to Determine if these Insets are equal to another. left Set/Get the inset from the left. right Set/Get the inset from the right. top Set/Get the inset from the top. zero Sets all the insets (top, left, bottom, right) to 0. AUTHOR
Cory Watson, "<gphat@cpan.org>" SEE ALSO
perl(1) COPYRIGHT &; LICENSE Copyright 2008-2010 by Cory G Watson. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.12.3 2010-08-21 Graphics::Primitive::Insets(3pm)
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