- "Art Poon" wrote:
> To be specific, after the initial boot with a
> minimal Linux kernel, there is a "fatal error"
> with "timeout waiting for getfile" when the
> compute node attempts to download the provisioning
> image from head.
I've seen similar issues with Cisco switches in IBM
Clus
SCC combines 24 dual-core processing elements, each with its own router, four
DDR3 memory controllers capable of handling up to 8GB apiece, and a very fast
sounds a fair amount like larrabee to me.
you needed your own datacentre. Now, you just need your own chip," said
that has to be one of
> -Original Message-
> From: beowulf-boun...@beowulf.org [mailto:beowulf-boun...@beowulf.org] On
> Behalf Of Greg Lindahl
> Sent: Wednesday, December 02, 2009 2:30 PM
> To: beowulf@beowulf.org
> Subject: Re: [Beowulf] New member, upgrading our existing Beowulf cluster
>
> On Wed, Dec 02
- "Toon Knapen" wrote:
> And why do you prefer xfs if I may ask. Performance?
For us, yes, plus the fact that ext3 is (maybe was, but
not from what I've heard) single threaded through the
journal daemon so if you get a lot of writers (say NFS
daemons for instance) you can get horribly backl
On Wed, Dec 02, 2009 at 10:13:34PM +, John Hearns wrote:
> You know fine well that such disclaimers are inserted by corporate
> email servers.
Actually, I had no idea, probably a lot of other people don't either.
Can't you work for a company that doesn't have disclaimers? ;-)
-- greg
_
- "Joshua Baker-LePain" wrote:
> What Red Hat is *not* shipping by default are any
> of the filesystem utilities, so you can't, e.g.,
> actually mkfs an XFS filesystem. But you can get
> the xfsprogs RPM from the CentOS extras repo and
> that should work just fine.
Ah yes, that was what i
I got another one for you from penguins support team: enable port forward
Sent from Moxier Mail
(http://www.moxier.com)
- Original Message -
From:"Rahul Nabar"
To:"Michael Will"
Cc:"Hearns, John" , "beowulf@beowulf.org"
Sent:12/2/2009 1:42 PM
Subject:Re: [Beowulf] Re: cluster fails t
2009/12/2 Peter Kjellstrom :
>
> Good job sending it to a public e-mail list then.
>
You know fine well that such disclaimers are inserted by corporate
email servers.
Keep your sarcasm to yourself.
___
Beowulf mailing list, Beowulf@beowulf.org sponsored b
On Wed, Dec 2, 2009 at 1:48 PM, Michael Will wrote:
> I don't know anything about smc switches, but for cisco switches I had to
> enable 'spanning-tree portfast default' before to allow a >pxe booting node
> to stay up. Maybe the smc switch has something similar that prevents the port
> from be
Art Poon wrote:
> I've tried resetting the SMC switch to factory defaults (with
> auto-negotiate on). I've checked the /etc/beowulf/modprobe.conf and it
> doesn't seem to be demanding anything exotic. We've tried swapping out to
> another SMC switch but that didn't change anything.
I had a very
On Wednesday 02 December 2009, Hearns, John wrote:
> I'm a new member to this list, but the research group that I work for has
> had a working cluster for many years. I am now looking at upgrading our
> current configuration.
...
> Mixing modern multi-core hardware with an older OS release which wo
> -Original Message-
> From: beowulf-boun...@beowulf.org [mailto:beowulf-boun...@beowulf.org] On
> Behalf Of Chris Dagdigian
> Sent: Wednesday, December 02, 2009 11:12 AM
> Cc: beowulf@beowulf.org; Ross Tucker
> Subject: Re: [Beowulf] New member, upgrading our existing Beowulf cluster
>
>
David Mathog wrote:
What's got me and the IT guys stumped is that while the compute nodes
boot via PXE from the head node without trouble on the NetGear, they
barf with the SMC. To be specific, after the initial boot with a
minimal Linux kernel, there is a "fatal error" with "timeout waiting fo
I don't know anything about smc switches, but for cisco switches I had to
enable 'spanning-tree portfast default' before to allow a pxe booting node to
stay up. Maybe the smc switch has something similar that prevents the port from
being fully useable until some spanning tree algorithm terminate
> What's got me and the IT guys stumped is that while the compute nodes
boot via PXE from the head node without trouble on the NetGear, they
barf with the SMC. To be specific, after the initial boot with a
minimal Linux kernel, there is a "fatal error" with "timeout waiting for
getfile" when the c
Not sure if you are looking at DIY or commercial options but this has
been done well on a commercial scale by at least some integrators.
I've never used them in a cluster but they make great virtualization
platforms.
This is just one example, the marketing term is "1U Twin Server"
http://w
From: beowulf-boun...@beowulf.org [mailto:beowulf-boun...@beowulf.org] On
Behalf Of Ross Tucker
Sent: Wednesday, November 25, 2009 1:54 PM
To: beowulf@beowulf.org
Subject: [Beowulf] New member, upgrading our existing Beowulf cluster
Greetings!
I'm a new member to this list, but the research grou
I've tried resetting the SMC switch to factory defaults (with
auto-negotiate on). I've checked the /etc/beowulf/modprobe.conf and it
doesn't seem to be demanding anything exotic. We've tried swapping out
to another SMC switch but that didn't change anything.
No idea really, as I don't use SMC
Art Poon wrote:
Dear colleagues,
[...]
What's got me and the IT guys stumped is that while the compute nodes
boot via PXE from the head node without trouble on the NetGear, they
barf with the SMC. To be specific, after the initial boot with a
minimal Linux kernel, there is a "fatal error" wi
I'm a new member to this list, but the research group that I work for has had a
working cluster for many years. I am now looking at upgrading our current
configuration.
Go for a new cluster any time. Upgrading is fraught with pitfalls – keep that
old cluster running till it dies, but look
http://news.zdnet.co.uk/hardware/0,100091,39918721,00.htm
Intel shows 48-core 'datacentre on a chip'
* Tags: * Manycore, * Cloud, * Operating System, * Processor
Rupert Goodwins ZDNet UK
Published: 02 Dec 2009 18:00 GMT
Intel has announced the Single-chip Cloud Computer (SCC), an experime
On Wed, 2 Dec 2009 at 10:42am, Chris Samuel wrote
I believe xfs is now available in 5.4. I'd have to check.
My meagre understanding based totally on rumours is
that it's still a preview release and that you need
a special support contract with Red Hat to get access.
I'd love to know that I'm
>
> I believe the older kernels handle the extra cores rather poorly, and don't
> even recognize the intel CPUs as NUMA enabled. You didn't mention hardware
> or
> software RAID. I'd recommend RAID scrubbing, and if software that requires
> (I
> think) >= 2.6.21, although (I think) Redhat back po
>
> I've had friends tell me that I should never use long-lived berkeley
> db databases without a good backup-and-recovery or recreate-from-scratch
> plan.
>
> Berkeley db comes with a test suite for integrity, and last time I
> used it under Linux, it didn't pass.
>
You mean that subsequent (min
>
>
> I believe xfs is now available in 5.4. I'd have to check. We've found xfs
> to be our preference (but we're revisiting gluster and lustre). I've not
> played with gfs so far.
>
And why do you prefer xfs if I may ask. Performance? Do you many small files
or large files?
___
>
>
> Maybe also some licensing breaks on large volume licensing. Red Hat is
> primarily a sales and service organisation that also produces a Linux
> by-product :) The HPC variant is targetted at areas which deal in large
> clusters at cheaper than Red Hat Enterprise Linux for servers at
> equival
Any idea why it gives better performance? Was it on memory bw intensive
apps? Could it be due to changes in the kernel that take into account the
Numa architecture (affinity) or ...
On Tue, Dec 1, 2009 at 8:57 PM, Tom Elken wrote:
> > On Behalf Of Gerald Creager
> > I've been quite happy with Ce
Dear colleagues,
I am in charge of managing a cluster at our research centre and am stuck with a
vexing (to me) problem!
(Disclaimer: I am a biologist by training and a mostly self-taught programmer.
I am still learning about networking and cluster management, so please bear
with me!)
This i
Dear all,
I've been working on hpux-itanium for the last 2 years (and even
unsubscribed to beowulf-ml during most of that time, my bad) but soon will
turn back to a beowulf cluster (HP DL380G6's with Xeon X5560, amcc/3ware
9690SA-8i with 4 x 600GB Cheetah 15krpm). Now I have a few questions on th
Hello, Christian,
you probably will need some advice off the list with your mpich setup.
If you tell the list where you are located and studying, you might
receive the help you need from someone who speaks your language or is
located nearby since the audience of Beowulf list is indeed very
widely
MPICH2 condensed instructions:
mpd daemon ring setup (MPICH2 installed supposed)
1. At all nodes:
cd $HOME
touch .mpd.conf
chmod 600 .mpd.conf
nano .mpd.conf
(if there's no nano - aptitude install nano)
Enter in the file:
MPD_SECRETWORD=_secretword_
_secretword_ must be the same at all nodes
2. A
Dear all,
I've been working on hpux-itanium for the last 2 years (and even
unsubscribed to beowulf-ml during most of that time, my bad) but soon will
turn back to a beowulf cluster (HP DL380G6's with Xeon X5560, amcc/3ware
9690SA-8i with 4 x 600GB Cheetah 15krpm). Now I have a few questions on the
Hi!
I am trying to create a cluster with only two machines.
The server will be a Linux machine, an Arch Linux distribution to be more
specific. The slave machine will be a Windows 7 machine.
I have found it is possible, but I was looking and have found that each
machine on the cluster must have
Greetings!
I'm a new member to this list, but the research group that I work for has
had a working cluster for many years. I am now looking at upgrading our
current configuration. I was wondering if anyone has actual experience with
running more than one node from a single power supply. Even just
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