Do you think that moving outside the loop the split() would be useful? I also thought to do like this:

                        open(GZIP, "<:gzip", "$path") or die "$!\n";
                        my @a = @{$categories{$k}->{traces}};

                        LOOP: while ( my $line = <GZIP>) {

                                my @lista = split /;/, $line;
                                my $head = $lista[0];

                                for ( my $i = '0'; $i < scalar @a; $i+
++ ) {

                                        if ( $head =~ /^($a[$i]->{rege
+x})$/ ) {

                                                $A += $lista[$a[$i]->{
+calc}[0]];
                                                $B += $lista[$a[$i]->{
+calc}[1]];
                                                $C += $lista[$a[$i]->{
+calc}[2]];
                                                next LOOP;

                                        }

                                }

                        }

                        close(GZIP);

[download]

I put the first element of the @lista array as the pattern to test, cause it is there; no need to test the whole line.

In reply to Re^4: An efficient way to parallelize loops by Deus Ex
in thread An efficient way to parallelize loops by Deus Ex

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