Hi,
I was trying to use lamboot command using 2 cpus. I made a
hostfile on 10.101.11.45 like this:
10.101.11.45 user=manojv
10.101.11.58 user=manoj
When I use $ lamboot hostfile, it takes too much of time and gives
error(pasted below). I am using secured connection using ssh keys. I am
able to connect 10.101.11.58 without any password or from 10.101.11.58, I
am able to connect 10.101.11.45.
When I use the same command with same hostfile on 10.101.11.58, it's done
without any problem.
I have made sure that on both of the machines, there is same version of
LAM(7.1.1).
Can anybody have idea why I am not able to lamboot from 10.101.11.45 ???
the error it gives is pasted below for the reference.
thanks.
error::
-------------------------------------------------------------
manojv_at_10.101.11.45 $ lamboot ~/host
LAM 7.1.1/MPI 2 C++/ROMIO - Indiana University
ERROR: LAM/MPI unexpectedly received the following on stderr:
eros: Connection refused
-----------------------------------------------------------------------------
LAM failed to execute a process on the remote node "manoj_at_10.101.11.58".
LAM was not trying to invoke any LAM-specific commands yet -- we were
simply trying to determine what shell was being used on the remote
host.
LAM tried to use the remote agent command "rsh"
to invoke "echo $SHELL" on the remote node.
*** PLEASE READ THIS ENTIRE MESSAGE, FOLLOW ITS SUGGESTIONS, AND
*** CONSULT THE "BOOTING LAM" SECTION OF THE LAM/MPI FAQ
*** (http://www.lam-mpi.org/faq/) BEFORE POSTING TO THE LAM/MPI USER'S
*** MAILING LIST.
This usually indicates an authentication problem with the remote
agent, some other configuration type of error in your .cshrc or
.profile file, or you were unable to executable a command on the
remote node for some other reason. The following is a list of items
that you should check on the remote node:
- You have an account and can login to the remote machine
- Incorrect permissions on your home directory (should
probably be 0755)
- Incorrect permissions on your $HOME/.rhosts file (if you are
using rsh -- they should probably be 0644)
- You have an entry in the remote $HOME/.rhosts file (if you
are using rsh) for the machine and username that you are
running from
- Your .cshrc/.profile must not print anything out to the
standard error
- Your .cshrc/.profile should set a correct TERM type
- Your .cshrc/.profile should set the SHELL environment
variable to your default shell
Try invoking the following command at the unix command line:
rsh 10.101.11.58 -n -l manoj 'echo $SHELL'
You will need to configure your local setup such that you will *not*
be prompted for a password to invoke this command on the remote node.
No output should be printed from the remote node before the output of
the command is displayed.
When you can get this command to execute successfully by hand, LAM
will probably be able to function properly.
-----------------------------------------------------------------------------
--
manoj vaghela
zeus numerix pvt ltd
aerospace engineering department
indian institute of technology bombay
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