I didn't understand very well what means "OP", but anyway... the tip is a bit off-topic since it's not related to the memory issue. But is a tip anyway.

Doing things like the code below:

my @t;

T: while( my $line = <GSE> ) {

  $line =~ s/[\r\n]//g;
  @t = split(/\t/, $ligne);
  
  if( $. == 1 ) {
        
    shift(@t);
    @samples = @t;
    next T;
  
  }

  @t = ();

[download]

Should avoid memory allocation everytime the variable is created/removed. If this really does not work like that, please let me know.

Alceu Rodrigues de Freitas Junior
---------------------------------
"You have enemies? Good. That means you've stood up for something, sometime in your life." - Sir Winston Churchill

In reply to Re^3: How to deal with Huge data by glasswalk3r
in thread How to deal with Huge data by Marsel

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