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Question: I can't let VC6 go too, it's got that something special. but for the argument sake: have you tried in VC13 /LTCG:PGO and /favor:xxx? I don't like the idea of cpu dispatching in ICC but to be fair i'm using an AMD cpu and never had performance related problems w/ R. I remember clearly the days you made the switch and everything turned lightning fast immediate
Asked by gio (94.66.76.x) on March 26 2014, 9:46pm
Reply on March 26 2014, 9:55pm:
    I haven't tried profile-guided optimizations, it'd be tough to decide what to run for testing, would want to come up with a bunch of test projects perhaps...

    Re: ICC performance: actually, from my initial tests, VC2013 vs VC6+ICC actually was pretty comparable on a Ivy Bridge i7. On a c2d though VC6+ICC was significantly faster. Unsure of how it would look on an AMD chip, but I'd guess that the VC6+ICC build would at least be comparable to the VC2013 build.
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