[Paraview] inquiries on parallel pvserver nodes

Wed Oct 14 06:01:57 EDT 2009

Hi Ken and All,

i've solved the problem with my openmpi build.
below are an example of it.

yewyong at vrc1:~/installer/mpi_test> mpirun -np 14 -machinefile quad
./hello_parallel
hello_parallel.cc: Number of tasks=14 My rank=5 My name=vrcwr220.
hello_parallel.cc: Number of tasks=14 My rank=7 My name=pc249.
hello_parallel.cc: Number of tasks=14 My rank=9 My name=pc205.
hello_parallel.cc: Number of tasks=14 My rank=1 My name=vrc1.
hello_parallel.cc: Number of tasks=14 My rank=3 My name=vrc1.
hello_parallel.cc: Number of tasks=14 My rank=10 My name=pc226.
hello_parallel.cc: Number of tasks=14 My rank=13 My name=vrcwr228.
hello_parallel.cc: Number of tasks=14 My rank=0 My name=vrc1.
hello_parallel.cc: Number of tasks=14 My rank=4 My name=vrcwr220.
hello_parallel.cc: Number of tasks=14 My rank=2 My name=vrc1.
hello_parallel.cc: Number of tasks=14 My rank=8 My name=pc205.
hello_parallel.cc: Number of tasks=14 My rank=6 My name=pc249.
hello_parallel.cc: Number of tasks=14 My rank=12 My name=vrcwr228.
hello_parallel.cc: Number of tasks=14 My rank=11 My name=pc226.

however, my problem still exist. my paraview doesn't seems to give any
response when i'm trying to connect
to the pvserver.
*
Starts the pvserver*
yewyong at vrc1:~/installer/mpi_test> mpirun -np 14 -machinefile quad pvserver
--use-offscreen-rendering
Listen on port: 11111
Waiting for client...
Client connected.

*And the client shows....*
yewyong at pc226:~> paraview
Waiting for server...

and the paraview "hangs" with a "choose server" window. (no buttons are
functioning)
i had to go to the konsole to "ctrl+c" to actually exit the paraview.

I tried having different sequence in machinefile to check whether it's the
problem with different IP domain

*my machine file (quad):*
202.185.77.110 slots=4 max-slots=4 (master node with 2 ethernet port;
another is 192.168 seires)
192.168.0.220 slots=2 max-slots=2
192.168.0.205 slots=2 max-slots=2
192.168.0.249 slots=2 max-slots=2
202.185.77.219 slots=2 max-slots=2
202.185.77.220 slots=2 max-slots=2

as per my findings, paraview will have problem connecting to pvserver
whenever pvserver is build from nodes
from different IP domain.

ps, even with hamachi (vpn), when each nodes are having 5.xx.xx.xx series as
IP, the problem persists.

sorry for the lengthy "story telling" mail.

appreciate all the help i can get.

Thanks in advance.

yewyong

On Thu, Oct 8, 2009 at 1:22 AM, yewyong <uyong81 at gmail.com> wrote:

> Hi Ken,
>
> Thanks for the swift reply, and for the reminder.
> forgot to try out the mpirun before trying it out in pvserver.
> tried a very simple "hello world" mpi job today. (to no avail)
>
> at first, i thought it was because of the difference of 192 and 202 domain
> which causes the pause, then i applied hamachi (vpn tool) to all the nodes,
> giving them a uniform LAN domain IPs, but still the pauses happens when
> reaching np > 10.
>
> that all boils down to my openmpi build? but i am able to run >10 nps
> pvserver with the same openmpi build when having the nodes when in a LAN
> environment (not using hamachi)..
>
> no worries, i'm using the cvs version of the paraview build. (it states
> "paraview 3.7 development" at the title window)
>
>
> thanks again for all your advice in advance.
>
>
> On Tue, Oct 6, 2009 at 10:06 PM, Moreland, Kenneth <kmorel at sandia.gov>wrote:
>
>>  I count 10 cores in the 192.168 domain.  My suspicion is that MPI is
>> having a problem when running with more than 10 processes and therefore
>> having to run on nodes in both 192.168 and 202.185.
>>
>> My advice is to first make sure that you can run any MPI job across all
>> the nodes in your makeshift cluster.  Do this using a test MPI program that
>> is simpler than pvserver.  Most MPI implementations come with a set of
>> tests.  If you can’t find any on your system, there are many available for
>> download; here is a good site:
>> http://www.mcs.anl.gov/research/projects/mpi/mpi-test/tsuite.html
>>
>> By the way, are you really running a program called pvclient?  There has
>> been no such executable since ParaView 2.6, which was released 2 years ago.
>>  If that is the case, I recommend updated to the latest version of ParaView.
>>
>> -Ken
>>
>>
>>
>> On 10/6/09 6:22 AM, "yewyong" <uyong81 at gmail.com> wrote:
>>
>> Hi all,
>>
>> am trying to utilize some desktops in our lab (say "lab A") to visualize
>> some virtual heart.
>> on top of that, there are also some unused desktop from other lab ("lab
>> B") which i plan to add in as the server.
>> below are my "hostfile" used during mpirun.
>>
>> 192.168.0.10 slots=4 max-slots=4
>> 192.168.0.220 slots=2 max-slots=2
>> 192.168.0.205 slots=2 max-slots=2
>> 192.168.0.249 slots=2 max-slots=2
>> 202.185.77.219 slots=2 max-slots=2
>> 202.185.77.220 slots=2 max-slots=2
>> 202.185.77.221 slots=2 max-slots=2
>>
>> as we can see, the 192.168... series are from lab A and the 202.185..
>> series are from lab B.
>> the experiment started off fine as i'm also using a desktop from lab A
>> (192.168.. series) to connect to the server.
>> when we reach np 11, the paraview (pvclient) fails to response when we try
>> to establish a connection with the server.
>>
>> are we missing out anything here?
>>
>> appreciate all your response and answer in advance
>>
>> Thanks
>>
>> yewyong
>>
>>
>>
>>
>>
>>    ****      Kenneth Moreland
>>     ***      Sandia National Laboratories
>> ***********
>> *** *** ***  email: kmorel at sandia.gov
>> **  ***  **  phone: (505) 844-8919
>>     ***      web:   http://www.cs.unm.edu/~kmorel<http://www.cs.unm.edu/%7Ekmorel>
>>
>>
>
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