Hi Philip.
The boards actually have two LAN interfaces. I tried bringing down the
2nd like you suggested, but I have the same problem.
Here is the output of mpdcheck -v, I get the same respective output from
all the boards im using:
# mpdcheck -v
mpdcheck -v
obtaining hostname via gethostname and getfqdn
gethostname gives board01
getfqdn gives board01
checking out unqualified hostname; make sure is not "localhost", etc.
checking out qualified hostname; make sure is not "localhost", etc.
obtain IP addrs via qualified and unqualified hostnames; make sure
other than 127.0.0.1
gethostbyname_ex: ('board01', [], ['10.9.10.1'])
gethostbyname_ex: ('board01', [], ['10.9.10.1'])
checking that IP addrs resolve to same host
now do some gethostbyaddr and gethostbyname_ex for machines in hosts file
#
Does that look right to you? I cant see anything wrong.
Oh yes im using a good Netgear Fast Ethernet Switch (just a little 8 port)
Best Regards
Matthew
Philip Sydney Lavers wrote:
Hello Mathew,
How many LAN cards per board? If more than one try ifconfig down on the card
that is not meant to be in the ring.
Also check that hostname on each board is actually what mpd thinks it is.
Also are using LAN hub or switch?
regards,
Philip Lavers
---- Original message ----
Date: Mon, 12 Jun 2006 16:49:08 +0100
From: [EMAIL PROTECTED]
Subject: [MPICH] EOF from console
To: beowulf@beowulf.org, [EMAIL PROTECTED]
Hi list
Im doing some experiments on an embedded platform and am building a
Beowulf cluster from them. I have a unusual setup as the boards have
limited memory and i am using MPICH 2 (latest). The setup is a bit
strange as Python is accessable to the boards via an NFS mount.
I can start an MPD daemon on a single board with no problems. I can
also add a further three to the ring with no probs. Adding a fith
causes an error. (see below)
(im adding nodes manually rather than using mpdboot. When I get it
working manually I will get mpdboot working.
Heres the problem:
(from first board)
mpdtrace -l
board01_2048 (10.9.10.1)
I then add others into the ring as:
mpd -h board01 -p 2048 &
mpdtrace
board02
board01
I can continue to add boards until I try and add a 5th. When adding a
5th using the above method I get:
mpdtrace &
mpdtrace (mpdtrace 57): got eof on console
Jul 22 08:33:49 board05 python2.3: mpdtrace (mpdtrace 57): got eof on
console
I have to admit im baffled. Can anyone shed some light on this? If more
specific information will help please tell me.
Regards
Matthew
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