On Mon, 2013-03-04 at 12:24 -0800, H. S. Teoh wrote: […] > > Is there a way to "parallelize" this kind of operations? > > What do you mean by "parallelize"? Run in multiple threads? I don't > think you can do that, because the result of filter depends on what it > gets from map.
This shows the deficiency in thinking of explicit use of threads as the only way forward. filter → map is a classic pipeline and if processed using a stream model over a thread pool using work stealing leads to code that is good. Alternatively do a parallel filter followed by a parallel map, data paralleism over a thread pool, more good code. -- Russel. ============================================================================= Dr Russel Winder t: +44 20 7585 2200 voip: sip:[email protected] 41 Buckmaster Road m: +44 7770 465 077 xmpp: [email protected] London SW11 1EN, UK w: www.russel.org.uk skype: russel_winder
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