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On 19/03/12 07:26, Andrew Lowe wrote: |
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> Hi all, |
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> Has anyone played around with the various "better known" compilers on |
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> Gentoo? By "better known", I'm referring to gcc, Intel, llvm, pathscale. |
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> My situation is that I've just started my PhD which requires me to do |
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> Finite Element Analysis, FEA, and Computational Fluid Dynamics, CFD, and |
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> I want to find the "best" compiler for the job. Before anyone says "Why |
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> bother, XXX compiler is only 1 - 2% faster than gcc", in the context of |
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> the work I'm doing this 1 - 2% IS important. |
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> |
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> What I'm looking for is any feedback people may have on ability to |
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> compile the Gentoo environment, the ability to change compilers easily, |
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> gcc-config or flags in make.conf, as to whether the compiler/linker can |
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> use the libraries as compiled by gcc on a "standard" gentoo install and |
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> so on. Obviously there is much web trawling to be done to find what |
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> other people are saying as well. |
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You don't need to "change" compilers. You can use whatever one you like |
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to build your program. The compiler portage uses to build its packages |
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does not affect your own usage of the others. |
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As for the fastest one, I can only speak for Intel CPUs where Intel C++ |
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gives me the fastest binaries. |
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