[zeromq-dev] threads versus cores

Ben Kloosterman bklooste at gmail.com
Sun Nov 11 03:56:07 CET 2012


Yes it depends on work  , also Linux and WIndows are not great at managing hyper threads and for memory work like many micro benches your mainly limited by Core cache not threads.
Ben

From: andrew at research.att.com
Date: Sat, 10 Nov 2012 18:43:53 -0700
To: zeromq-dev at lists.zeromq.org
Subject: Re: [zeromq-dev] threads versus cores

maybe.but in a recent application i had, where i did a lot of MD5 cheksums,hyperthreading got me a factor 1.8.
On Nov 10, 2012, at 4:00 PM, Charles Remes wrote:Use cores. The "hyper threading" touted by Intel is just marketing BS.

cr

On Nov 10, 2012, at 4:37 PM, Peter Vittali <mycircuit at sunrise.ch> wrote:

Hi

In the ZeroMq documentation there is mention of 'threads' and 'cores'
and it seems as if it is supposed
that each core can run one thread at a time ( that is without
switching between threads ).
However, my box has this CPU: Intel(R) Core(TM) i3-2120, which
according to spec has two cores and 4 threads.
Does this mean, for the purpose of designing 0mq apps, that I can
replace the term 'core' with 'thread' ?
In other words, on such a CPU, is the concurrency delimiting factor
for 0MQ the number of cores or the number of threads.

Thanks for your thoughts
mycircuit
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