Building GMP 6.0 for Ivy Bridge
Victor Shoup
shoup at cs.nyu.edu
Fri Oct 2 12:45:27 UTC 2015
Also, there is no virtualization / emulation, AFAIK.
On Oct 2, 2015, at 2:24 AM, Marc Glisse wrote:
> On Thu, 1 Oct 2015, Victor Shoup wrote:
>
>> I tried the latest daily snapshot and ran "./configure".
>> I get:
>>
>> Host type: x86_64-unknown-linux-gnu
>
> Hmm, I would have expected config.guess to return ivybridge-unknown-linux-gnu.
>
>> So I guess GMP's "automagic" is not working as well as one would hope.
>> Let me know if there is some config patch you want me to try.
>
> In config.guess, if you look for the string ivybridge, you'll find a C program that determines your processor type from variables family, model, cpuid_64bit, cpu_64bit, cpu_avx, etc. It would help if you could print those variables and send us the result.
>
> By the way, I hope you are not using any virtualization / emulation? Those tend to mess with CPU identification.
>
> --
> Marc Glisse
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