Thanks Zaxo, BrowserUk, ambrus and others for the comments and suggestions. I checked on the Intel (P4) based HT with the default (Redhat 9) Perl, and I found that Perl makes use of both the processors. The following is the test program I have used to test this..., so in a way my problem is virtually solved.

Thanks again.
-Qhayaal

#!/usr/bin/perl -w

   use threads;

   $thr1 = threads->new(\&subr, 1,10000000 );
   $thr2 = threads->new(\&subr, 1,20000000 );

   $_ -> join for ($thr1, $thr2);

   print "Threads returned.\n";

exit;

sub subr {
    ($min,$max)= @_;
    print "In the thread\n";
    for ($i=$min;$i<=$max;$i++) {
       1;
    }
    return 1;
}
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