[scyld-users] Re: diskless nodes
becker at scyld.com
Thu Nov 14 12:06:02 PST 2002
On Thu, 14 Nov 2002, Chris Lipp wrote:
> I am a newbie to clustering and looking for some assistance. I have set
> up a small beowulf cluster (10 slave nodes connected to the front-end
> with a 100Mb/s switch) using the SCYLD release.
> I have had no problems
> bringing the system up online and booting all of my diskless nodes, and
> recieving the "up" status signal from the beosetup monitor.
> My problem arises when I go to run a benchmark; every benchmark I try doesnt
> seem to be using the nodes. I have tried many while monitoring the nodes
> in the beostatus window with no response.
> The only thing I have been able to determine independently is that the
> slave nodes are not reporting any memory during boot-up (I have
> upgraded the bios - no change) the slave nodes are old HP vectra
> VLs. The beomap function only returns the -1 response from the front
> end. I can bpsh into all the nodes with no problems.
Test the scheduler by running
You should get back (on an idle cluster):
Note that the first process ("rank 0" for MPI) is on the master, and you
use only 9 slaves.
ALL_CPUS=1 NO_LOCAL=1 beomap
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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