Re: Disable SSE3 features in glibc

[Thawan Kooburat <kthawan at gmail dot com>]

Hi,

Thanks H.J. Lu for the solution:

Add --disable-multi-arch during configure


Cheers,

On Thu, Sep 16, 2010 at 7:21 PM, Thawan Kooburat <kthawan@gmail.com> wrote:
> I mean it is not a glibc error, because I live migrate to a machine
> that does not have SSE3 instructions
>
> -
> Thawan
>
> On Thu, Sep 16, 2010 at 7:16 PM, Thawan Kooburat <kthawan@gmail.com> wrote:
>> Hi,
>>
>> It is for my experiment. I understand that glibc check CPU features
>> via CPUID only once on the first call into any routine. I am doing
>> some kind of live migration, so the programs generate invalid opcode
>> error on the target machine because of SSE3.
>>
>>
>>
>> On Thu, Sep 16, 2010 at 7:09 PM, Matt Turner <mattst88@gmail.com> wrote:
>>> On Thu, Sep 16, 2010 at 8:06 PM, Thawan Kooburat <kthawan@gmail.com> wrote:
>>>> Hi,
>>>>
>>>> I want to prevent glibc from using its SSE3 routines such as :
>>>> __strncpy_ssse3 even though the machine supports those features. Is
>>>> there anyway to do it?
>>>>
>>>> Right now I am thinking that I need to recompile glibc. However, I am
>>>> not sure which configuration flag should I use.
>>>> I am on a 64-bit machine, but there is only one - - host option
>>>> (x86_64) unlike the 32-bit host.
>>>>
>>>> I found the compilation guide for glibc:
>>>> http://tldp.org/HOWTO/html_single/Glibc-Install-HOWTO/
>>>> However, it seems a bit complicated. So I am thinking of using
>>>> Fedora's glibc source rpm. Hopefully, I can compile and install glibc
>>>> with a special setup like the method in the link.
>>>>
>>>>
>>>> Please suggest
>>>>
>>>>
>>>> --
>>>> Thawan Kooburat
>>>>
>>>> Graduate Student
>>>> Department of Computer Science
>>>> UW-Madison
>>>
>>> Are you experiencing a bug caused by the SSE3 routines? Or is there
>>> some other purpose?
>>>
>>> Matt
>>>
>>
>>
>>
>> --
>> Thawan Kooburat
>>
>> Graduate Student
>> Department of Computer Science
>> UW-Madison
>>
>
>
>
> --
> Thawan Kooburat
>
> Graduate Student
> Department of Computer Science
> UW-Madison
>



-- 
Thawan Kooburat

Graduate Student
Department of Computer Science
UW-Madison