[Paraview] Fwd: Not being able to connect to pvserver
Burlen Loring
bloring at lbl.gov
Wed Jan 30 12:40:55 EST 2013
>
> Presently, I have PV 3.98 installed from source with MPI support on my
> local Mac and a remote Linux machine. I ran the pvsc file that you
> sent from my local Mac but I was not sure what goes in the input for
> "MPI Root" and "ParaView Root". I left those two fields blank and
> tried to connect and gave me the following error:
Sorry if that wasn't clear. for example if you have mpi installed in
"/op/mpi/mpich/1.4.1" then you put that for "MPI Root". Likewise if you
have your PV build at "/home/pradeep/ParaView/3.98.0" you put that.
On 01/30/2013 01:40 AM, Pradeep Jha wrote:
> Hello Burlen,
>
> thanks for the detailed response. I am still not able to get it work
> and somethings are still not clear to me. I want to ask some very
> fundamental questions as this is my first time trying to set up a
> something over the networks myself and the online instructions are a
> bit too technical for me.
>
> Presently, I have PV 3.98 installed from source with MPI support on my
> local Mac and a remote Linux machine. I ran the pvsc file that you
> sent from my local Mac but I was not sure what goes in the input for
> "MPI Root" and "ParaView Root". I left those two fields blank and
> tried to connect and gave me the following error:
>
> ------------------------------------------------------------------------
> pradeep at laptop subset]$MPI_NP=4
> MPI_ROOT=
> PV_ROOT=
> PV_SERVER_PORT=11111
> REMOTE_USER=pradeep
> SERVER_HOST=83.shin.fluid.cse.nagoya-u.ac.jp
> <http://83.shin.fluid.cse.nagoya-u.ac.jp>
> SSH_PATH=/usr/bin/ssh
> XTERM_PATH=/usr/bin/xterm
> Accepting connection(s): laptop.local:11111
> Server launch command is : /usr/bin/xterm -T "ParaView Server
> pradeep at 83.shin.fluid.cse.nagoya-u.ac.jp:11111
> <http://pradeep@83.shin.fluid.cse.nagoya-u.ac.jp:11111>" -e
> /usr/bin/ssh -t -R 11111:localhost:11111
> pradeep at 83.shin.fluid.cse.nagoya-u.ac.jp
> <mailto:pradeep at 83.shin.fluid.cse.nagoya-u.ac.jp> DISPLAY=:0 xhost + ;
> LD_LIBRARY_PATH=/lib:/lib/paraview-3.98/:LD_LIBRARY_PATH DISPLAY=:0
> /bin/mpirun -np 4 /bin/pvserver --reverse-connection
> --server-port=11111 --client-host=localhost
> The process failed to start. Either the invoked program is missing, or
> you may have insufficient permissions to invoke the program.
> Server launch timed out.
> ---------------------------------------------------------------------------
>
> Here are my questions:
>
> 1. How do I get the above thing working?
> 2. What did you mean by "Production setting"?
> 3. I am right now testing PV on small test cases over machines (my
> Mac and the remote Linux) which have both graphics hardware. For
> such a case why do I need "reverse connection"? Should I always
> use "reverse connection"?
> 4. I don't understand when I initiate a pvserver on the remote Linux
> machine and try to connect it from local Mac, why doesn't it ask
> for a password?
> 5. My understanding is that when I get this connection going, all my
> data should be on the server. I simply use the local Mac GUI and I
> should be able to visualize and browse through data at the remote
> end. Is that correct?
> 6. When I am at lab, I have a static IP for my Mac and I can log into
> it from other computers. But I cannot access my Mac from outside
> when I am not in the lab. Does this mean I cannot use pvserver
> outside the lab? Or is this link
> <https://hpcforge.org/plugins/mediawiki/wiki/pv-meshless/index.php/Launching_ParaView_on_HPC_Machines#Step_2>
> is talking about this problem?
> 7.
> Once I manage to understand and get it working, I want to use PV
> using a supercomputing facility. On the supercomputing facility I
> can install PV on my login node (which has 64 processors) but not
> on the supercomputing cluster. If I want to use the cluster (which
> has around 50,000 processors) to visualize a big
> data (around 800GB if possible), will installing Paraview with MPI
> support on the login node, which is accesible by the cluster, be
> sufficient?
>
> I guess these questions are extremely basic but I am responsible for
> figuring this whole thing out myself and with not much direct
> experience in networking. So it is troubling me a bit.
>
> Hoping to hear from you,
> Pradeep
>
>
> 2013/1/30 Burlen Loring <bloring at lbl.gov <mailto:bloring at lbl.gov>>
>
> Hi Pradeep,
>
>
> vtkClientSocket (0x7fc9ae108cb0): Socket error in call to
> connect. Permission denied.
>
>
> Your connection is being blocked somewhere in between your compute
> node and workstation. there are various configuration setting on
> either/both client and server that could cause it. Fortunately we
> do not need to change any of these settings , many of which
> require root access and potentially open security vulnerabilities.
> Instead, you will use an ssh tunnel and a server config (pvsc)
> tailored to your situation to automate the process.
>
> I'm attaching a minimal pvsc that illustrates how one might
> configure a reverse connection to a server with graphics hardware.
> This pvsc is for illustration only, don't use in a production
> setting! There are number of liberties I've taken, for example I
> assume that X11 is already running, and I use "xhost +"(very very
> bad) to enable pvserver to access gpu's. Normally I would put all
> of the server side stuff in a shell script. I didn't do that here
> to keep things simple for you. I hope you can use this to
> understand how PV works.
>
>
> 1) I connect to the CentOS machine using "ssh -X machinename".
>
> Don't do that. With -X forwarding you won't be taking advantage of
> your cluster's graphics hardware.
>
> Hope this helps
> Burlen
>
>
> On 01/29/2013 06:41 AM, Utkarsh Ayachit wrote:
>
> Doesn't look like your client machine can connect to the server
> machine. From the client machine try:
>
> ping 83.shin.fluid.cse.nagoya-u.ac.jp
> <http://83.shin.fluid.cse.nagoya-u.ac.jp>
> telnet 83.shin.fluid.cse.nagoya-u.ac.jp
> <http://83.shin.fluid.cse.nagoya-u.ac.jp> 11111
>
>
>
> On Tue, Jan 29, 2013 at 4:58 AM, Pradeep Jha
> <pradeep at ccs.engg.nagoya-u.ac.jp
> <mailto:pradeep at ccs.engg.nagoya-u.ac.jp>> wrote:
>
> Hello,
>
> I have installed Paraview 3.98 on my Desktop (Mac OSX
> 10.8) and a remote
> machine running CentOS 5.4. The CentOS machine has
> rendering hardware so I
> havent installed PV with OSMesa support.
>
> I can login to the CentOS from my Mac using SSH and vice
> versa.
>
> Here is how I am trying to connect:
>
> 1) I connect to the CentOS machine using "ssh -X
> machinename". When I start
> the "pvserver" on the CentOS the output is:
> -------------------------------------------------------------------
> [pradeep at 83 ~]$pvserver
> Waiting for client...
> Connection URL:
> cs://83.shin.fluid.cse.nagoya-u.ac.jp:11111
> <http://83.shin.fluid.cse.nagoya-u.ac.jp:11111>
> Accepting connection(s):
> 83.shin.fluid.cse.nagoya-u.ac.jp:11111
> <http://83.shin.fluid.cse.nagoya-u.ac.jp:11111>
> -------------------------------------------------------------------
>
> 2) Then I add this information in the paraview I am
> running on my Mac as
> shown in the attached image file.
>
> 3) I click on connect.
>
> I get the following error:
> ------------------------------------------------------------------------
> ERROR: In
> /Users/pradeep/softwares/ParaView/VTK/Common/System/vtkSocket.cxx,
> line 481
> vtkClientSocket (0x7fc9ae108cb0): Socket error in call to
> connect.
> Permission denied.
> -----------------------------------------------------------------------
>
> I dont have any expertise in networking and so I dont know
> much about
> firewalls of my systems here nor do any my colleagues do.
>
> Thanks in advance,
> Pradeep
>
>
>
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