I am executing the following code per your recommendations
and am getting no print output.

#!/usr/bin/perl

use strict;
use warnings;

##########################################################
#
#  Parse PS Accounting Data
#
##########################################################
my $uid;
my $login;
my $cpupr;
my %someData;
my $value;
my $key;

for my $file ("may_07_xsd00544.dat") {

  open (my $fh,"<",$file) or die "Can't open file $file: $!";

my @data;
while (my $line = <$fh>) {
  chomp($line);
chomp ( my @data = <$fh> );
 last if ($line =~ /TOTAL COMMAND SUMMARY/);

 next unless $line =~ /^\d/;

 push @data, $line;
}

my @sorted =
    map  { $_->[0] }
    sort { $b->[1] <=> $a->[1] }
    map  [ $_, (split)[3] ], @data;

print "$_\n" for @sorted;

close $fh or die "Can't close result file: $!";
}
[download]

I modified the sort code to do a descending numeric sort on the 4th column.