[scyld-users] Re: Scyld-users digest, Vol 1 #3 - 1 msg
becker at scyld.com
Fri Nov 22 13:21:00 PST 2002
On Fri, 22 Nov 2002 scyld-users-request at beowulf.org wrote:
> From: "James D. Marco" <jdm27 at cornell.edu>
> The Scyld disk put the cluster up on my computers, fine.
Which version are you using? A 28Cz install? The new 28Dz-5
distributed at SC2002? Or an older 27 series version?
> We had some minor trouble with one of the vendors. He installed a stand-alone
> cluster based on PVM and MPI (each of the machines was a stand alone
> computer.) But, he refused to support it.
This is an increasingly common story: a vendor installs a Linux
distribution on each node, checks the MPI and PVM boxes, and sells it as
a cluster. But there is no one that understands the system to explain
how it is configured or to fix problems.
> I broke the cluster down into Master and Compute nodes based on Scyld
> and told the users I would support that.
> 1) I am looking for some sample programs. The users are a little
> skeptical that it is up and running after the vendor problem. If I can
> demonstrate a 200-300% performance increase, this would be good.
Most distribution CDs have linpack and mpi-mandel.
Our SC2002 demo disk from this past week has a few pre-configured demos.
Our "SCALES" (Scyld Cluster Applications...) CD was distributed at
LinuxWorld and the IEEE cluster conference.
> 2) Is the Scyld cluster multi-processor capable? I have not seen the
> SMP kernel in the start up of the Scyld cluster. I note that the monitor
> shows both CPU's on all nodes.
Our new Zero Install Cluster demo CDs have only a uniprocessor kernel in
order to reliably work on all systems and still fit onto a single CD.
Most other versions have both uniprocessor and SMP kernels.
Donald Becker becker at scyld.com
Scyld Computing Corporation http://www.scyld.com
410 Severn Ave. Suite 210 Scyld Beowulf cluster system
Annapolis MD 21403 410-990-9993
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