[mpich-discuss] mpich2 1.0.8 on windows - domain required?

[Jayesh Krishna]

Hi,
 Try re-registering your username(thomas)/password in mb13 using "mpiexec
-register" command.
 
Regards,
Jayesh

  _____  

From: mpich-discuss-bounces at mcs.anl.gov
[mailto:mpich-discuss-bounces at mcs.anl.gov] On Behalf Of Thomas Blom
Sent: Monday, November 03, 2008 10:12 AM
To: mpich-discuss at mcs.anl.gov
Subject: Re: [mpich-discuss] mpich2 1.0.8 on windows - domain required?


The test command suggested (mpiexec -n 2 hostname) works fine on one of
the machines.  On the other machine (both are winXP) I get the error:

Credentials for thomas rejected connecting to mb13
Aborting: Unable to connect to mb13

This is the result of just running locally, not over a network!  In answer
to the previous question, 'thomas' is not a domain user.  This is just two
winXP machines on a local network that are part of the same "workgroup"
but neither are part of any domain.  

I wonder if this has to do with my having changed the machine name on mb13
... but I have since completely uninstalled and installed mpich2.  I left
the default phrase "behappy" during this installation.  I then ran
wmpiregister and entered my username and password (which I use to login to
each machine sucessfully).

I have tried to play with wmpiconfig, but it is a little difficult to
understand how to use this.  I don't find any documentation for it.

Thanks very much for any help....

-thomas blom, austin tx




On Mon, Nov 3, 2008 at 9:01 AM, Jayesh Krishna <jayesh at mcs.anl.gov> wrote:


Hi,
 The machines don't have to be part of the same domain to be part of your
MPI job (This requirement is only for setups which use the SSPI
authentication mechanism to launch MPI jobs).
 Can you run a non-MPI command like hostname on the local machine ?
 
   mpiexec -n 2 hostname
 
 Is the user "thomas" a domain user ? In that case you should register the
username with the domainname (DOMAINNAME\USERNAME) when registering the
username (mpiexec -register) with mpiexec.
 Let us know if you still have problems.
 
Regards,
Jayesh

  _____  

From: mpich-discuss-bounces at mcs.anl.gov
[mailto:mpich-discuss-bounces at mcs.anl.gov] On Behalf Of Thomas Blom
Sent: Sunday, November 02, 2008 8:45 AM
To: mpich-discuss at mcs.anl.gov
Subject: [mpich-discuss] mpich2 1.0.8 on windows - domain required?


Hello,

I have just subscribed to the list to ask a question about mpich2 on
windows.  (I found the archives but don't see a way to search them).

Is it a requirement that the windows computers participating in mpich2 be
part of a windows domain?  I see things in the documentation that perhaps
imply this, but not state it outright.

My computers are simply on a local network, and part of a "workgroup".
The smpd process manager can "see" the other systems to some extent, since
the result of

smpd -status mb13    // mb13 is the hostname of my other windows pc

correctly finds that smpd is running on my other host.  But executing
mpiexec and providing hostnames in a "machinefile" e.g.

mpiexec -n 4 -machinefile machines echo %COMPUTERNAME%

fails with:

Credentials for thomas rejected connecting to mb13


I have taken care that the username/pass is identical on each machine, the
user is admin, etc.  I have followed steps I've found in various documents
about uninstalling/installing smpd and providing the identical passphrase
on each, running mpiexec -register, etc...

Any ideas?  (Or is it just that I must be running on a domain, which I
cannot find concrete documentation about)

thanks very much, 
thomas blom in austin, tx



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