Hi Bernard,
It would be of great help if there is a documentation on how to make a
"64-bit" image. Just out of curiosity: would it be possible to install
the new nodes with 32-bit OS but then I go into each node and upgrade it
to a 64-bit OS (this may save me from setting up pbs, ganglia, maui, etc
on that node by myself.)?
ST
Bernard Li wrote:
Hi Shiang-Tai:
I would recommend you research more carefully the implication of
running your application in 64-bit mode vs 32-bit mode in more
detail. It may not be as simple as differences for the max address space.
Currently we do not support multi-distro/multi-arch, so the answer to
#1 is no.
As for 2, it is not possible to install 64-bit OS on 32-bit machine,
the OS simply will not run.
Having said that, it may not be impossible to create a x86_64 image
for your new nodes and just assign the new nodes to the "64-bit" image.
Erich is working on the multi-arch/multi-distro feature in trunk,
perhaps he has some advice/suggestions for you.
Cheers,
Bernard
------------------------------------------------------------------------
*From:* Shiang-Tai Lin [mailto:[EMAIL PROTECTED]
*Sent:* Fri 13/01/2006 00:38
*To:* Bernard Li
*Cc:* [email protected]
*Subject:* Re: [Oscar-users] add new nodes
Bernard Li wrote:
> I'm cc:ing the oscar-users list, please keep all responses in the list.
Dear Bernard,
My apologies. I'd be more careful about it in the future.
>
> The following are answers to your questions:
>
> 1. Currently OSCAR does not support multiple distroes, in the very
> near future we would be able to. So either Fedora Core 2 works, or
> you can rebuild your cluster with Fedora Core 3.
> 2. You can install a x86 OS on AMD Opteron, however, you will only be
> able to access max ~3GB of memory per process. If this is not a
> concern for you, then you can try to install x86 OS. Of course if
> you're starting from scratch, it is recommended that you install a
> x86_64 OS.
Thanks for the clear explanation. I didn't know that the difference
between 32 and 64-bit machines is just the max memory access. In this
case I would try to use x86 OS first and see if it works.
But just in case should it fail, can I
1. use FC2 x86 OS for the original cluster but FC2 x86_64 for the new
nodes?
or
2. Use FC2 x86_64 OS on an Intel 32 bit machine (so that I can use
x86_64 on the whole cluster)?
Thanks a lot for your help.
ST
>
> If Fedora Core 2 x86 works on your AMD dualcores, then this should be
> pretty straightforward.
>
> Cheers,
>
> Bernard
>
> ------------------------------------------------------------------------
> *From:* Shiang-Tai Lin [mailto:[EMAIL PROTECTED]
> *Sent:* Thu 12/01/2006 23:46
> *To:* Bernard Li
> *Subject:* Re: [Oscar-users] add new nodes
>
> Hi Bernard,
>
> Thanks for the reply.
>
> 1. I've not tried FC2 on my AMD opteron. From the FC release notes, it
> seems that it would work. Can I install FC3 on the new nodes if the
> server is FC2?
> 2. I thought that I'd need x86_64 for the new nodes. Would x86 work on a
> 64-bit machine?
>
> Thanks for any input.
> ST
>
> Bernard Li wrote:
>
> > Questions:
> >
> > 1) Does Fedora Core 2 run on your AMD dualcores?
> > 2) Are you planning to install 32-bit or 64-bit OS (i.e. Fedora Core 2
> > x86 or x86_64)?
> >
> > Cheers,
> >
> > Bernard
> >
> >
------------------------------------------------------------------------
> > *From:* [EMAIL PROTECTED] on behalf of
> > Shiang-Tai Lin
> > *Sent:* Thu 12/01/2006 22:25
> > *To:* [email protected]
> > *Subject:* [Oscar-users] add new nodes
> >
> > Hi,
> >
> > I have a cluster setup with Fedora Core 2 and OSCAR 4.0. All the
> > computers are intel Xeon dual processor (32-bit) PCs.
> > I would like to add 3 computing nodes to it but these 3 new computers
> > have AMD dural core 64-bit processors.
> > Is it possible to add these three nodes to my original cluster using
> > OSCAR? I read the message by Michael J. Brim
> > (http://sourceforge.net/mailarchive/message.php?msg_id=75922) and it
> > seems to me possible. If so, where can I
> > find a more detailed instruction to do this? If not, is there any
> > solution for me?
> >
> > Thanks a lot.
> >
> > Shiang-Tai
> >
> >
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