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Top Forums Shell Programming and Scripting Problem running Perl Script with huge data files Post 302435957 by ad23 on Thursday 8th of July 2010 04:24:36 PM
Old 07-08-2010
Problem running Perl Script with huge data files

Hello Everyone,

I have a perl script that reads two types of data files (txt and XML). These data files are huge and large in number. I am using something like this :

Code:
foreach my $t  (@text)
{
    open TEXT, $t or die "Cannot open $t for reading: $!\n";
  
    while(my $line=<TEXT>){
       ....My code....
    }
}
close(TEXT);

foreach my $x  (@xml)
{
    open XML, $x or die "Cannot open $x for reading: $!\n";
  
    while(my $line=<XML>){
       ....My code....
    }
}

When I run it directly like following, it gives me "Out of memory" error:

Code:
Usage: perl runXML.pl

Can anyone suggest me as to how I can run this using "qsub" or something? I have these files in a directory structure like this:

Code:
/Data/2010_aaa/data.txt
/Data/2010_aaa/data.xml

/Data/2010_bbb/data.txt
/Data/2010_bbb/data.xml

/Data/2010_ccc/data.txt
/Data/2010_ccc/data.xml

/Data/2010_ddd/data.txt
/Data/2010_ddd/data.xml

And I need to run this script on all these files, as my data is scattered in these files.

Thanks!
 

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DumpXML::Parser(3pm)					User Contributed Perl Documentation				      DumpXML::Parser(3pm)

NAME
Data::DumpXML::Parser - Restore data dumped by Data::DumpXML SYNOPSIS
use Data::DumpXML::Parser; my $p = Data::DumpXML::Parser->new; my $data = $p->parsefile(shift || "test.xml"); DESCRIPTION
"Data::DumpXML::Parser" is an "XML::Parser" subclass that can recreate the data structure from an XML document produced by "Data::DumpXML". The parserfile() method returns a reference to an array of the values dumped. The constructor method new() takes a single additional argument to that of "XML::Parser": Blesser => CODEREF A subroutine that is invoked to bless restored objects. The subroutine is invoked with two arguments: a reference to the object, and a string containing the class name. If not provided, the built-in "bless" function is used. For situations where the input file cannot necessarily be trusted and blessing arbitrary Classes might give malicious input the ability to exploit the DESTROY methods of modules used by the code, it is a good idea to provide a no-op blesser: my $p = Data::DumpXML::Parser->new(Blesser => sub {}); SEE ALSO
Data::DumpXML, XML::Parser AUTHOR
Copyright 2001 Gisle Aas. This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.8.8 2006-04-08 DumpXML::Parser(3pm)
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