[Beowulf] 32 bit or 64bit pkgs re /usr/local over NFS is okay, Joe

Jon Aquilina eagles051387 at gmail.com
Mon Jul 7 09:03:49 EDT 2008


im would like at some point in time to migrate to a fully 64bit os and leave
32 bit behind at least for the time being.

On 7/7/08, Tim Cutts <tjrc at sanger.ac.uk> wrote:
>
>
> On 7 Jul 2008, at 11:29 am, Carsten Aulbert wrote:
>
>
>>
>> Jon Aquilina wrote:
>>
>>> so what your telling me to make sure im running 64bit bins is to check
>>> the /usr/bin. if im not im best compiling from source?
>>>
>>
>> Well other possiblities are:
>>
>> look at the output of uname -a
>>
>> if you get i686 you are running a 32bit kernel if the output contains
>> x64_64 you are running a 64 bit kernel (sometimes uname -m tells you the
>> same).
>>
>
> That's unreliable.  It's possible to run a 64-bit kernel with a 32-bit
> userland, so just because uname returns x86_64 that doesn't mean you can
> definitely run 64-bit userland binaries.
>
> For Debian/*buntu: see if you can install ia32 packages. These are
>> compatibility packages to run 32bit binaries under 64bit systems.
>> Obviously those are not needed on 32bit systems and hence not available
>> - as far as I know.
>>
>
> The cast-iron way to do it on Debian/Ubuntu is the output of:
>
> dpkg --print-architecture
>
> That will print "i386" for 32-bit Intel, and "amd64" for x86_64.  Obviously
> for other supported architectures it prints other things.  It will print the
> correct thing regardless of whether the kernel is 32- or 64-bit.
>
> Tim
>
>
> --
> The Wellcome Trust Sanger Institute is operated by Genome ResearchLimited,
> a charity registered in England with number 1021457 and acompany registered
> in England with number 2742969, whose registeredoffice is 215 Euston Road,
> London, NW1 2BE.
>



-- 
Jonathan Aquilina
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