[nanomsg] Re: inproc cost /mulithreaded cost
- From: Martin Sustrik <sustrik@xxxxxxxxxx>
- To: nanomsg@xxxxxxxxxxxxx
- Date: Mon, 09 Dec 2013 22:28:25 +0100
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On 09/12/13 22:03, Apostolis Xekoukoulotakis wrote:
> What is the inproc communication cost as related to a
> multiplication or an if statement?
It's much more expensive. What we are talking here about is
synchronisation between multiple CPU cores, locking down the bus,
flushing data from one core's cache and reading them to another CPU's
cache etc.
The difference from simple multiplication should be somewhere around
3-4 orders of magnitude assuming there's a lot of synchronisation
between different cores going on in parallel.
Martin
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