Re: Multiple scripts versus single multi-threaded script

References	<f01b2e7a-9fc7-4138-bb6e-447d31179f2d@googlegroups.com>
Date	2013-10-04 02:42 +1000
Subject	Re: Multiple scripts versus single multi-threaded script
From	Chris Angelico <rosuav@gmail.com>
Newsgroups	comp.lang.python
Message-ID	<mailman.682.1380818535.18130.python-list@python.org> (permalink)

Show all headers | View raw

On Fri, Oct 4, 2013 at 2:01 AM, JL <lightaiyee@gmail.com> wrote:
> What is the difference between running multiple python scripts and a single multi-threaded script? May I know what are the pros and cons of each approach? Right now, my preference is to run multiple separate python scripts because it is simpler.

(Caveat: The below is based on CPython. If you're using IronPython,
Jython, or some other implementation, some details may be a little
different.)

Multiple threads can share state easily by simply referencing each
other's variables, but the cost of that is that they'll never actually
execute simultaneously. If you want your scripts to run in parallel on
multiple CPUs/cores, you need multiple processes. But if you're doing
something I/O bound (like servicing sockets), threads work just fine.

As to using separate scripts versus the multiprocessing module, that's
purely a matter of what looks cleanest. Do whatever suits your code.

ChrisA

Back to comp.lang.python | Previous | Next — Previous in thread | Find similar | Unroll thread

Thread

Multiple scripts versus single multi-threaded script JL <lightaiyee@gmail.com> - 2013-10-03 09:01 -0700
  Re: Multiple scripts versus single multi-threaded script Roy Smith <roy@panix.com> - 2013-10-03 12:41 -0400
    Re: Multiple scripts versus single multi-threaded script Chris Angelico <rosuav@gmail.com> - 2013-10-04 02:50 +1000
      Re: Multiple scripts versus single multi-threaded script Roy Smith <roy@panix.com> - 2013-10-03 14:28 -0400
        Re: Multiple scripts versus single multi-threaded script Chris Angelico <rosuav@gmail.com> - 2013-10-04 04:36 +1000
          Re: Multiple scripts versus single multi-threaded script Roy Smith <roy@panix.com> - 2013-10-03 15:53 -0400
            Re: Multiple scripts versus single multi-threaded script Chris Angelico <rosuav@gmail.com> - 2013-10-04 08:22 +1000
    Re: Multiple scripts versus single multi-threaded script Dave Angel <davea@davea.name> - 2013-10-03 18:40 +0000
    Re: Multiple scripts versus single multi-threaded script Jeremy Sanders <jeremy@jeremysanders.net> - 2013-10-04 10:02 +0200
    Re: Multiple scripts versus single multi-threaded script Grant Edwards <invalid@invalid.invalid> - 2013-10-04 16:38 +0000
  Re: Multiple scripts versus single multi-threaded script Chris Angelico <rosuav@gmail.com> - 2013-10-04 02:42 +1000

csiph-web