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- Why is -march=native not enabled by default by compilers IDEs?
For -O0, whether -march=native or -march=<generic> is the default still specifies the same family, so both are perfectly compatibly with -O0; and whenever another optimization level is specified, -march=native is beneficial to performance So, for me, the fact that -O0 is the default doesn't matter for -march 's default
- what is march parameter when compile a c file - Stack Overflow
I saw these two kinds of make parameters: make -march=corei7-avx xxxx xxxx make -march-icelake-server xxxx xxx arch is understood, what's the m meaning? Where can I find which arch can be used
- c++ - equivalent of -march=native for msvc - Stack Overflow
Yes, GCC clang -march=native detects ISA extensions supported by the host system and enables all of them Is also detects what CPU it actually is, and enables -mtune=icelake-client or -mtune=znver4 or whatever which can affect instruction-selection choices and for example -mprefer-vector-width=512 on Zen 4 vs 256 on other AVX-512 CPUs
- -march=haswell vs -march=core-avx2 vs -mavx2 - Stack Overflow
What are the differences and tradeoffs between -march=haswell, -march=core-avx2, and -mavx2 for compiling avx2 intrinsics? I know that -mavx2 is a flag and -march=haswell core-avx2 are architectures which just translate to a bunch of flags So -mavx2 is a subset of the other two But beyond that, how do I choose the right one for my application?
- Implementation of March memory testing algorithm
I am looking for a memory testing algorithm that will help my team verify the design and test during production (bad soldering, cross-connected address data lines, mismatched impedances, mirroring
- SQL query to select dates between two dates - Stack Overflow
I have a start_date and end_date I want to get the list of dates in between these two dates Can anyone help me pointing the mistake in my query select Date,TotalAllowance from Calculation where
- What are reasons for -march=native to be detrimental
7 There are plenty of reasons why a code can be slower with -march=native, although this is quite exceptional That being said, in your specific context, one possible scenario is the use of slower SIMD instructions, or more precisely different SIMD instructions finally making the program slower
- How to specify -march=native using pragmas (or otherwise) in gcc
How to specify -march=native using pragmas (or otherwise) in gcc Asked 7 years, 9 months ago Modified 5 years, 4 months ago Viewed 4k times
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