[MPICH] VIsualization ???

[Jayesh Krishna]

Hi,
 MPICH2 on windows only supports the smpd process manager. I am currently
looking into the code to find out the extend of support available in smpd
process manager for publishing a name (You can publish names across MPI
processes run using the same mpiexec command using smpd. MPD allows you to
specify the machines in the MPD ring during mpdboot time and the published
name is published to all the machines in the MPD ring.).

(Note: There is a -sethosts option in smpd which could be of help. I will
dig into the code and let you know soon.)

Regards,
Jayesh

-----Original Message-----
From: owner-mpich-discuss at mcs.anl.gov
[mailto:owner-mpich-discuss at mcs.anl.gov] On Behalf Of rppass at rppass.com
Sent: Tuesday, April 17, 2007 7:25 AM
To: Trach-Minh Tran
Cc: Ralph Pass; mpich-discuss at mcs.anl.gov
Subject: Re: [MPICH] VIsualization ???

Naive me, I just got MPICH2 from the MPICH2 web site at Argonne.

I am running on Windows XP.

How do I tell the version of MPICH2 that I got?

Thank you,
Ralph Pass


> On 04/13/2007 09:26 PM, Ralph Pass wrote:
>> I am trying to get a separate process (visualizer) to connect to a 
>> server for computation of results to be visualized).  I am tyring to 
>> emulate the code in Using MPI-2 (I downloaded the version yesterday).
>>
>> I try to publish the name of the computation program and then accept 
>> a comm.
>>
>> On the visualizer side I try to lookup the name.
>>
>> I am using C++ on a Windows XP system.
>>
>> I run the computation program (using mpiexec to start it) and it is 
>> fat and dumb, awaiting a connection  and then a data transfer.
>> On the visualization side, when I try the lookup call [looks like:
>> MPI_Lookup_name("ImageProcessing", MPI_INFO_NULL, mMPIPortName);]
>>
>> I get an error return: 536999969.  When I convert this to a string, I
>> get:
>>
>> Error message Invalid service name (see MPI_Publish_name), error stack:
>> MPID_NS_Lookup(70): Lookup failed for service name ImageProcessing
>>
>>
>>
>> I start the computation with mpiexec -n 4 processing
>>
>>
>> and the visualizer with
>>
>> mpiexec -localonly 1 visualizer
>>
>> Any help or comments? (Like you need to start the two programs in the 
>> same mpiexec command)
>>
>
> Which mpiexec did you use? The publish_name/lookup_name does not work 
> with the OSC's mpiexec. However with the MPICH2 MPD version, it does. 
> After setting up the MPD with "mpdboot ...", I just run
>
> mpiexec -n 1 ./viz < /dev/null &
> mpiexec -n 4 ./comp
>
> Hope this help.
>
> -Minh.
>
>