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Re: How can I make this piece of code even faster?

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On Sun, Jul 21, 2013 at 5:11 PM, Paul Rudin <paul.nospam@rudin.co.uk> wrote:
> Steven D'Aprano <steve+comp.lang.python@pearwood.info> writes:
>
>> On Sat, 20 Jul 2013 13:22:03 -0700, pablobarhamalzas asked:
>>
>> "How can I make this piece of code even faster?"
>>
>> - Use a faster computer.
>> - Put in more memory.
>> - If using Unix or Linux, decrease the "nice" priority of the process.
>>
>> I mention these because sometimes people forget that if you have a choice
>> between "spend 10 hours at $70 per hour to optimize code", and "spend
>> $200 to put more memory in", putting more memory in may be more cost
>> effective.
>>
>
> Sure - but it's helpful if programmers understand a little bit about the
> computational complexity of algorithms. If it's just a question of
> making each basic step of your algorithm a bit faster, then it may well
> be better to spend money on better hardware than on squeezing more out
> of your code. OTOH if you've got an n^2 implementation and there's
> actually an n.log n solution available then you should probably re-code.

I haven't analyzed every suggestion in this thread in detail, but I
don't think any of them affects the algorithmic complexity of the
code. They're all incremental changes.

ChrisA

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Thread

How can I make this piece of code even faster? pablobarhamalzas@gmail.com - 2013-07-20 13:22 -0700
  Re: How can I make this piece of code even faster? Fabio Zadrozny <fabiofz@gmail.com> - 2013-07-20 18:05 -0300
  Re: How can I make this piece of code even faster? Roy Smith <roy@panix.com> - 2013-07-20 17:25 -0400
  Re: How can I make this piece of code even faster? pablobarhamalzas@gmail.com - 2013-07-20 15:45 -0700
  Re: How can I make this piece of code even faster? Chris Angelico <rosuav@gmail.com> - 2013-07-21 08:55 +1000
  Re: How can I make this piece of code even faster? pablobarhamalzas@gmail.com - 2013-07-20 16:24 -0700
    Re: How can I make this piece of code even faster? Chris Angelico <rosuav@gmail.com> - 2013-07-21 09:29 +1000
  Re: How can I make this piece of code even faster? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-07-21 05:11 +0000
    Re: How can I make this piece of code even faster? Paul Rudin <paul.nospam@rudin.co.uk> - 2013-07-21 08:11 +0100
      Re: How can I make this piece of code even faster? Chris Angelico <rosuav@gmail.com> - 2013-07-21 19:21 +1000
  Re: How can I make this piece of code even faster? Peter Otten <__peter__@web.de> - 2013-07-21 09:10 +0200
  Re: How can I make this piece of code even faster? Serhiy Storchaka <storchaka@gmail.com> - 2013-07-21 10:11 +0300
  Re: How can I make this piece of code even faster? Christian Gollwitzer <auriocus@gmx.de> - 2013-07-21 09:24 +0200
  Re: How can I make this piece of code even faster? pablobarhamalzas@gmail.com - 2013-07-21 03:19 -0700
    Re: How can I make this piece of code even faster? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-07-21 10:31 +0000
      Re: How can I make this piece of code even faster? pablobarhamalzas@gmail.com - 2013-07-21 03:48 -0700
        Re: How can I make this piece of code even faster? Stefan Behnel <stefan_ml@behnel.de> - 2013-07-21 14:49 +0200
      Re: How can I make this piece of code even faster? Chris Angelico <rosuav@gmail.com> - 2013-07-21 20:48 +1000
    Re: How can I make this piece of code even faster? Michael Torrie <torriem@gmail.com> - 2013-07-21 09:27 -0600
  Re: How can I make this piece of code even faster? Joshua Landau <joshua@landau.ws> - 2013-07-21 12:39 +0100

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