[mpich-discuss] SMPD, Problem launching when using -host

[Jayesh Krishna]

 Hi,

>> mpiexec -n 1 -host roobarb master : -n 1 slave 
	The command above("-host" option specified for only one
executable) works for me. What is the error message that you get (Provide
us with the snapshot of your command and the error output. It would also
help us if you provide more details - Is roobarb a remote machine ? etc) ?

>> mpiexec -localroot -n 1 roobarb master : -host roobarb -n 1 slave

	When using the "-localroot" option you should not specify the
hostname for the 1st executable. The command should be,

>> mpiexec -localroot -n 1 master : -host roobarb -n 1 slave

	You can find detailed information on the various options available
with mpiexec in the windows developer's guide (available at
http://www.mcs.anl.gov/research/projects/mpich2/documentation/index.php?s=
docs).


Regards,
Jayesh

-----Original Message-----
From: owner-mpich-discuss at mcs.anl.gov
[mailto:owner-mpich-discuss at mcs.anl.gov] On Behalf Of James S Perrin
Sent: Friday, October 03, 2008 12:13 PM
To: mpich
Subject: [mpich-discuss] SMPD, Problem launching when using -host

Hi,
     Processes fail to start if -host is used for only some but not all
processes when launching. ie the machines that some processes launch on is
left up to the smpd to allocate.

eg

mpiexec -n 1 -host roobarb master : -n 1 slave

when -localroot is used the following fails unless -host is also specified
for the master.

mpiexc -localroot -n 1 roobarb master : -host roobarb -n 1 slave

Using MPICH2 1.0.7 on WinXP ia32.

Regards
James
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