I want the order of the keys while printing to be the same as when the keys were read in!

Any tips please!

Use the strictures to find other potential problems with your code:

use warnings;
use strict;
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This would produce the following warnings:

Scalar value @ARGV[0] better written as $ARGV[0] at ...
Scalar value @temparray[0] better written as $temparray[0] at ...
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Always check success when you open a file, and always close the file.

I refactored your code:

#!/usr/bin/env perl
use warnings;
use strict;
use Tie::IxHash;

tie my %goldhash, "Tie::IxHash";
my $goldcsv = shift;
my @keyarray;
my @temparray;

open my $GOLD_FH, '<', $goldcsv or die "Can not open $goldcsv $!\n";
my $i = 0;
while (<$GOLD_FH>) {
    chomp;
    $i++;
    if ($i eq 1) { 
        @temparray = split /,/;
        my $j=0;
        for my $elem (@temparray) {
            $j++;
            next if ($j eq 1);
            push @keyarray, $elem;
        }
        next;
    }
    @temparray = split /,/;
    my $testcasename = $temparray[0];
    for my $value (1 .. $#temparray) {
        $goldhash{$testcasename}{$keyarray[$value-1]} = $temparray[$va
+lue];
    }
}
close $GOLD_FH or die "Can not close $goldcsv $!\n";

for my $testcase (keys %goldhash) {
    print "$testcase: ";
    for my $value (keys %{ $goldhash{$testcase} }) {
        print "$value = $goldhash{$testcase}{$value} ";
    }
    print "\n";
}
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Here is the output. Is this what you had in mind?

Test1:  Stage1Mem = 44  Stage2Time = 45  Stage2Mem = 43  Stage1Time = 
+45
Test2:  Stage1Mem = 7  Stage2Time = 34  Stage2Mem = 45  Stage1Time = 2
+334
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I was actually going to incorporate strict and warnings, this was just a quick hashup. I also liked the suggestion of using persdc, its a good document. I am really new with complex data structures, and thanks for all the help rendered.