Performance difference

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This topic contains 1 reply, has 2 voices, and was last updated by  Gopi Krishna 5 years, 2 months ago.

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    I am working on optimization of speech codec.
    For the same optimized code , I got different MCPS values on simultor version and on linux mips cross compiler
    I observed better performance result on simulator, on linux i got double MCPS value compared to simulator version

    I used same flags (-O3,-funroll-loops), same ICACHE,DCACHE sizes in both the cases
    and cycle ratio (2 instructions/cycle )also same for both cases

    any idea!
    please help me

    simulator version: GREEN HILLS MULTI 6.1
    linux : mips-linux-uclibc-gcc cross compiler, GCC version 4.2.4


    Gopi Krishna

    Hi Treddy,
    How are you calculating your MCPS on linux??


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