Re: To thread or not to thread ?
Carlos Moreno wrote:
James Kanze wrote:
Why have more threads than the number of processor cores?
I'm baffled by this question ...
The above question is exactly equivalent to "why would we want
multithreading?"
Not exactly. One of the reason some people (particularly in the
numeric processing community) want threads is precisely to
spread the work out across multiple CPU's, so that it can be
done in parallel. [ ...... ]
Ok, James, and Pete...
I don't mean to go all schoolyard on you, but... How is what
you're saying any different from what I said? (other than
zooming-in on one aspect?) --- or in any case, how does it
contradict it?
I didn't read the last paragraph of your earlier message, which does,
indeed, talk about CPU-bound tasks and running one per core. If I had I
might not have responded as I did. But you have to admit, "exactly
equivalent" is a bit of an overstatement. <g>
--
-- Pete
Roundhouse Consulting, Ltd. (www.versatilecoding.com)
Author of "The Standard C++ Library Extensions: a Tutorial and
Reference." (www.petebecker.com/tr1book)
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