Changes between Initial Version and Version 1 of Ticket #39065, comment 17


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Timestamp:
May 13, 2013, 4:34:35 PM (11 years ago)
Author:
Veence (Vincent)
Comment:

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  • Ticket #39065, comment 17

    initial v1  
    11You now get the correct compiler set. Good.
    2 Atlas was meant to be coiled with gccXX for which it has an extended list of precomputed figures. With clang, it must go through an extensive process of finding those figures that optimize computation time. But it pays off, since you’re rewarded with AVX assembly code that doubles the efficiency wrt to gccXX which, on OS X, is crippled to SSE4.2.
     2Atlas was meant to be compiled with gccXX for which it has an extended list of precomputed figures. With clang, it must go through an extensive process of finding those figures that optimize computation time. But it pays off, since you’re rewarded with AVX assembly code that doubles the efficiency wrt to gccXX which, on OS X, is crippled to SSE4.2.
    33Please report when the build is done, for me to close the bug. Thanks!