Bernard and Michael,
Thanks for all the hints.
I currently have one of the new nodes installed with FC4 x86_64 and have
NFS working. Perhaps I should try Michael's suggestion first to see how
easy/difficult it is to set up other services by hand. In fact, I am
stumbled on sharing the user account info between the server and nodes.
If I understand correctly, OPIUM is the package that does the job.
Unfortunately, I have difficulty finding the relevant configuration
files and understanding how OPIUM sets them up. Is there something I can
read to learn more about OPIUM?
Thanks a lot!
ST
Bernard Li wrote:
As far as I know there is no upgrade path between x86 OS and x86_64 OS.
The only way to do it is to re-install.
Perhaps Erich has some insights as to how you can create x86_64 image
for your current x86 cluster.
Cheers,
Bernard
-----Original Message-----
From: Michael Edwards [mailto:[EMAIL PROTECTED]
Sent: Friday, January 13, 2006 8:03
To: Shiang-Tai Lin
Cc: Bernard Li; [email protected]
Subject: Re: [Oscar-users] add new nodes
What you would probably have to do is install the 64 bit OS on the
nodes by hand, pull a golden image off that node with the systemimager
tools (not through oscar at this point) and then use oscar to push
that image to the other nodes.
The kicker of this is that you would still have to set up the first
node by hand (including all the Oscar packages!) so just for fun you
might try your original clone/upgrade idea on that node before pulling
the golden image back with systemimager. I will be a bit supprised if
the upgrade from x86 to x86_64 goes well, but stranger things have
happened.
As a disclaimer, I have never actually done this myself, I just know
it is possible with the tools included with Oscar. From my
understanding, this is the way most people use systemimager outside
the oscar community.
On 1/13/06, Shiang-Tai Lin <[EMAIL PROTECTED]> wrote:
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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