[mpich-discuss] Unable to connect issue

[Jayesh Krishna]

Hi,
 Do you have the same version of MPICH2 installed on both the machines ?
You can check the version of smpd using the "smpd -version" command.
 The error does not seem to be because of a firewall issue. If the above
suggestion does not work please provide me the smpd debug outputs from
BOTH hosts and the mpiexec verbose output.

(PS: I am one of the contributors to the MPICH2 dev manual. Let me know if
you need any info to be added to the manual.)

Regards,
Jayesh

  _____

From: bob ilgner [mailto:bobilgner at gmail.com]
Sent: Friday, September 19, 2008 10:03 AM
To: Jayesh Krishna
Subject: Re: [mpich-discuss] Unable to connect issue


Hi Jayesh,

Your assumption is correct. The command was mpiexec -hosts 2 images16
images17 cpi

mpiexec -n 2 cpi.exe works fine

Same error message if I use IP addresses instead of names for mpiexec
command

I have attached the debug log for smpd and the verbose log for the mpiexec
as requested.

I have just put 2+2 together and noticed that you put together the
development manual for the MPICH2.

Regards, bob








2008/9/19 Jayesh Krishna <jayesh at mcs.anl.gov>


Hi,

# Can you run the MPI program on a single host ? (i.e., mpiexec -n 2
cpi.exe)
# Can you try specifying ipaddresses of the hosts instead of the hostnames
? (i.e., mpiexec -hosts 2 IPADDRESS_OF_IMAGES16 IPADDRESS_OF_IMAGES17
cpi.exe)

    If the above suggestions don't work please provide us the verbose
output of smpd and mpiexec. To get the verbose output of smpd & mpiexec,

# Stop any instances of smpd using, smpd -stop, command
# Run smpd in debug mode using, smpd -d, command
# Run mpiexec in the verbose mode using the "-verbose" option of mpiexec.

   Let us know the results.

(Note: In the command that you listed in your email both hostnames are the
same -- there is no images16 specified with "-hosts" arg of mpiexec. I am
assuming you meant "mpiexec -hosts 2 images16 images17 cpi.exe")

Regards,
Jayesh

  _____

From: owner-mpich-discuss at mcs.anl.gov
[mailto:owner-mpich-discuss at mcs.anl.gov] On Behalf Of bob ilgner
Sent: Friday, September 19, 2008 8:30 AM
To: mpich-discuss at mcs.anl.gov
Subject: Re: [mpich-discuss] Unable to connect issue


Hi,

I am running XP Pro on the machines and am therefore using smpd. As far as
I know the mpd is used in the unix/linux environment. The smpd is
operational on both PCs. The local check for the status os the smpd on
either machine shows that they are running.  When i do a remote check with
smdp I get the same message.i.e.

smpd -status <remotehostname>
abort: unable to connect to <remotehostname>



Regards, bob


On Fri, Sep 19, 2008 at 1:38 PM, The Source <thesourcehim at gmail.com>
wrote:


do you have mpd ring running and connected on both machines?

bob ilgner пишет:


I have installed mpich2 1.0.7 on 2 XP Pro hosts and am trying to run the
cpi process on both hosts with the command
mpiexec -hosts 2 images17 images17 cpi
where images16 and images17 are the hosts and cpi is the supplied example
application and get the error:
abort: unable to connect to images16
I have checked passwords and regsitration is the same on both hosts.
Firewalls are both down. Host names defined in hosts file under system32.
I have ensured that smpd is operating on both machines. Usernames and
password are the same on both hosts and have both been delegated. I have
gone through the mpich2 user manual and find no way forward with this. Is
there anything else I could try ?
Would it help if I listed the output from the mpiexec with the verbose
switch on.
Regards, bob





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