On Sat, 2014-05-03 at 19:37 +0000, Atila Neves via Digitalmars-d wrote: […] > I'm using parallel and taskPool from std.parallelism. I was under > the impression it gave me a ready-to-use pool with as many > threads as I have cores.
There is a default, related to the number of cores the OS thinks there is (*), but you can also set the number manually. std.parallelism could do with some work to make it better than it already is. (*) Physical cores are not necessarily the number reported by the OS due to core hyperthreads. Quad core no hyperthreads, and dual core, two hyperthreads per core, both get reported as four processor systems. However if you benchmark them you get very, very different performance characteristics. -- Russel. ============================================================================= Dr Russel Winder t: +44 20 7585 2200 voip: sip:russel.win...@ekiga.net 41 Buckmaster Road m: +44 7770 465 077 xmpp: rus...@winder.org.uk London SW11 1EN, UK w: www.russel.org.uk skype: russel_winder
