March 2023 Global Immigration Alert Big Immigration Law Blog Why no march=native by default? as you have pointed out, besides producing binaries incompatibility with older cpus, march=native isn't necessarily beneficial. it improves performance in some cases such as numerical computing. but it is not beneficial in many other cases, and is sometimes detrimental. Cross compilation: special cross compiler or just gcc with option march? asked 6 years, 10 months ago modified 6 years, 4 months ago viewed 1k times.
Immigration News Wednesday 29th March 2023 Motion Law In sqlserver, how do i compare dates? for example: select * from users where registrationdate >= '1 20 2009' (registrationdate is datetime type) thanks. March=foo implies mtune=foo unless you also specify a different mtune. this is one reason why using march is better than just enabling options like mavx without doing anything about tuning. caveat: march=native on a cpu that gcc doesn't specifically recognize will still enable new instruction sets that gcc can detect, but will leave mtune=generic. use a new enough gcc that knows about. 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. 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.
Immigration News Tuesday 28th March 2023 Motion Law 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. 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. Error: bad value for march= switch asked 12 years, 6 months ago modified 9 years, 11 months ago viewed 8k times. 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.
Immigration News Thursday 30th March 2023 Motion Law Error: bad value for march= switch asked 12 years, 6 months ago modified 9 years, 11 months ago viewed 8k times. 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.