Thank you to all the Monks for your valuable edits / modifications/ complete re-writes. I learned some things about reducing memory usage and ridding useless variables etc. Appreciate it!

Since none of your suggestions were working either, I write a short script to see the length distribution explicitly, and there was sequences from input file # 1 that were 0 (zero) in length as well as longer than the longest sequence in input file # 2. This will cause my scrip tp search without terminating. And this was also confirmed by hdb's script because it exits with an error message after error-checking

Anti-climactically, the error in the input files that were being fed to me was the reason that my original script that was working stopped working. In the end, a good lesson for me, and useful to get pointers about scripting I wouldnt have otherwise gathered from you all. So thank you all, again!

In reply to Re^2: Speeding up stalled script by onlyIDleft
in thread Speeding up stalled script by onlyIDleft

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.