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Oleg Vinichenko

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Posts posted by Oleg Vinichenko

  1. a tutorial (a big messy page) never was a consistent page and wasn't actively checked (if at all) by stuff. -march=native is GCC optimization that used for a target cpu, i.e what gcc finds best. Many believe that gives more optimizied code and it is stable, it is widely used. My personal opinion: if it does any improvements, they are ngligible on recent hardware. other than that, how gcc calculates it? Likely there is internal test suite for a cpu instruction and cache parameters, which tell what to enable. However, it might be not perfect. It is up to user to decide.

  2. a real problem is in dotnet overlay. it's broken. it's profile has package.unmask and package.mask for dev-lang/mono. a latter one has no real  sense, because package.unmask take a precedence over package.mask. This should be reported to dotnet overlay maintainers.

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