Well, it still throws an 'out of memory' when I close the little Perl/Tk that announces the script has finished running.

I assume I've done this right as BrowserUk suggested using Tie::Array::Packed to save on RAM: 

tie @aob, 'Tie::Array::Packed::DoubleNative';
#model 1;
sub popnum1 {
    ( $x, $y, $z ) = @_;

    if ( $y == 0 ) {
        $aob[$x][0] = $initial + $z;
        $zaza = $aob[$x][0];
    }
    else {
        if ( substr( $aod[ $y - 1 ], $x, 1 ) ne 'a' ) {
            $aob[$x][$y] = $initial + $z;
            $zaza = $aob[$x][$y];

        }
        else {
            $aob[$x][$y] = $z + $aob[$x][ $y - 1 ];
            $zaza = $aob[$x][$y];
        }
    }

    return $zaza;
}

[download]

I figure that returning a single variable ($zaza)is more efficient than returning $aob[$x][$y] - it's hard to tell.

In reply to Re^4: Handling HUGE amounts of data by Dandello
in thread Handling HUGE amounts of data by Dandello

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