<html><head><meta http-equiv="Content-Type" content="text/html charset=iso-8859-1"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hello,<div><br></div><div>I have some more questions. </div><div><br></div><div><ul class="MailOutline"><li>How do I connect to the remote server using pvpython from command line? All the online instructions have this example:</li></ul></div><div><br></div><div> servermanger.Connect("amber")</div><div><br></div><div> What is amber? I tried replacing it by the IP of my pvserver, the server name etc. but nothing seems to be working.</div><div> </div><div><ul class="MailOutline"><li>While connecting to my pvserver from the GUI, when I try to use the "-display" flag as mentioned on <a href="http://www.paraview.org/Wiki/Setting_up_a_ParaView_Server#X_Connections">this page</a> using the following command on my remote machine:</li></ul><div> </div><div> "/usr/lib64/openmpi/1.4-gcc/bin//mpirun -np 1 /usr/local/bin//pvserver -rc -ch=133.6.71.88 --server-port=11111 -display:0.0"</div></div><div><br></div><div><span class="Apple-tab-span" style="white-space:pre"> </span> It doesn't work giving me the following error: </div><div> </div><div> "Got unknown argument: -display:0.0". </div><div><br></div><div> Is this related to OSMesa? I still haven't installed PV with OSMesa support.</div><div><br></div><div><ul class="MailOutline"><li>I am not able to reproduce this error all the time. But often, while I am working on my local client GUI connected to the pvserver, sometimes PV stops communicating to the server giving the following errors in the terminal:</li></ul></div><div><br></div><div> --------------------------------------------------------------------------------------------------------------------------------------</div><div> ERROR: In /Users/pradeep/softwares/ParaView/VTK/Common/System/vtkSocket.cxx, </div><div> line 572 vtkClientSocket (0x7fd0fcc3ef60): Socket error in call to send. Broken pipe.</div><div><br></div><div> ERROR: In /Users/pradeep/softwares/ParaView/VTK/Parallel/Core/vtkSocketCommunicator.cxx, line 735</div><div> vtkSocketCommunicator (0x7fd0fcc366f0): Could not send tag.</div><div><br></div><div> ERROR: In /Users/pradeep/softwares/ParaView/VTK/Parallel/Core/vtkSocketCommunicator.cxx, line 812</div><div> vtkSocketCommunicator (0x7fd0fcc366f0): Could not receive tag. 41232</div><div><br></div><div> ERROR: In /Users/pradeep/softwares/ParaView/VTK/Common/System/vtkSocket.cxx, line 572</div><div> vtkClientSocket (0x7fd0fcc3ef60): Socket error in call to send. Broken pipe. </div><div> -------------------------------------------------------------------------------------------------------------------------------------- </div><div> </div><div> Right now this is happening quite randomly and I am not able to trace what exactly am I doing to cause this error.</div><div><br></div><div>Thanks,</div><div>Pradeep</div><div><br></div><div>
<div class="page" title="Page 1">
</div></div><div><br><div><div>On 31 janv. 2013, at 10:27, Pradeep Jha <<a href="mailto:pradeep@ccs.engg.nagoya-u.ac.jp">pradeep@ccs.engg.nagoya-u.ac.jp</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div dir="ltr">Thanks a lot for your detailed response Burlen.</div><div class="gmail_extra"><br><br><div class="gmail_quote">2013/1/31 Burlen Loring <span dir="ltr"><<a href="mailto:bloring@lbl.gov" target="_blank">bloring@lbl.gov</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF">
<div><div class="im">
<blockquote type="cite">
<div><br>
</div>
<div>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:</div>
</blockquote></div>
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.<div><div class="h5"><br>
<br>
On 01/30/2013 01:40 AM, Pradeep Jha wrote:<br>
</div></div></div><div><div class="h5">
<blockquote type="cite">
<div dir="ltr">Hello Burlen,
<div><br>
</div>
<div>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. </div>
<div><br>
</div>
<div>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:</div>
<div><br>
</div>
<div>------------------------------------------------------------------------</div>
<div>
<div>pradeep@laptop subset]$MPI_NP=4</div>
<div>MPI_ROOT=</div>
<div>PV_ROOT=</div>
<div>PV_SERVER_PORT=11111</div>
<div>REMOTE_USER=pradeep</div>
<div>SERVER_HOST=<a href="http://83.shin.fluid.cse.nagoya-u.ac.jp/" target="_blank">83.shin.fluid.cse.nagoya-u.ac.jp</a></div>
<div>SSH_PATH=/usr/bin/ssh</div>
<div>XTERM_PATH=/usr/bin/xterm</div>
<div>Accepting connection(s): laptop.local:11111</div>
<div>Server launch command is : /usr/bin/xterm -T "ParaView
Server <a href="http://pradeep@83.shin.fluid.cse.nagoya-u.ac.jp:11111/" target="_blank">pradeep@83.shin.fluid.cse.nagoya-u.ac.jp:11111</a>"
-e /usr/bin/ssh -t -R 11111:localhost:11111 <a href="mailto:pradeep@83.shin.fluid.cse.nagoya-u.ac.jp" target="_blank">pradeep@83.shin.fluid.cse.nagoya-u.ac.jp</a>
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</div>
<div>The process failed to start. Either the invoked program
is missing, or you may have insufficient permissions to
invoke the program. </div>
<div>Server launch timed out. </div>
<div>---------------------------------------------------------------------------<br>
</div>
<div><br>
</div>
<div>Here are my questions:</div>
<div>
<ol>
<li>How do I get the above thing working?</li>
<li>What did you mean by "Production setting"?<br>
</li>
<li>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"?<br>
</li>
<li>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?<br>
</li>
<li>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?<br>
</li>
<li>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 <a href="https://hpcforge.org/plugins/mediawiki/wiki/pv-meshless/index.php/Launching_ParaView_on_HPC_Machines#Step_2" target="_blank">this
link</a> is talking about this problem?</li>
<li>
<div>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. <span style="font-family:arial,sans-serif;font-size:13px">If
I want to use the cluster (which has around 50,000
processors) to visualize a big </span></div>
<div><span style="font-family:arial,sans-serif;font-size:13px">data
(around 800GB if possible), will installing Paraview
with MPI support on the login node, which is
accesible by the cluster, be sufficient? </span></div>
<div>
<br>
</div>
</li>
</ol>
<div>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.</div>
<div>
<br>
</div>
<div>Hoping to hear from you,</div>
<div>Pradeep</div>
</div>
</div>
</div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">2013/1/30 Burlen Loring <span dir="ltr"><<a href="mailto:bloring@lbl.gov" target="_blank">bloring@lbl.gov</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi
Pradeep,
<div><br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
vtkClientSocket (0x7fc9ae108cb0): Socket error in call
to connect. Permission denied.<br>
</blockquote>
<br>
</div>
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.<br>
<br>
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.
<div>
<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
1) I connect to the CentOS machine using "ssh -X
machinename".<br>
</blockquote>
</div>
Don't do that. With -X forwarding you won't be taking
advantage of your cluster's graphics hardware.<br>
<br>
Hope this helps<span><font color="#888888"><br>
Burlen</font></span>
<div>
<div><br>
<br>
On 01/29/2013 06:41 AM, Utkarsh Ayachit wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Doesn't look like your client machine can connect to
the server<br>
machine. From the client machine try:<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
ping <a href="http://83.shin.fluid.cse.nagoya-u.ac.jp/" target="_blank">83.shin.fluid.cse.nagoya-u.ac.jp</a><br>
telnet <a href="http://83.shin.fluid.cse.nagoya-u.ac.jp/" target="_blank">83.shin.fluid.cse.nagoya-u.ac.jp</a>
11111<br>
</blockquote>
<br>
<br>
On Tue, Jan 29, 2013 at 4:58 AM, Pradeep Jha<br>
<<a href="mailto:pradeep@ccs.engg.nagoya-u.ac.jp" target="_blank">pradeep@ccs.engg.nagoya-u.ac.jp</a>>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hello,<br>
<br>
I have installed Paraview 3.98 on my Desktop (Mac
OSX 10.8) and a remote<br>
machine running CentOS 5.4. The CentOS machine has
rendering hardware so I<br>
havent installed PV with OSMesa support.<br>
<br>
I can login to the CentOS from my Mac using SSH and
vice versa.<br>
<br>
Here is how I am trying to connect:<br>
<br>
1) I connect to the CentOS machine using "ssh -X
machinename". When I start<br>
the "pvserver" on the CentOS the output is:<br>
-------------------------------------------------------------------<br>
[pradeep@83 ~]$pvserver<br>
Waiting for client...<br>
Connection URL: cs://<a href="http://83.shin.fluid.cse.nagoya-u.ac.jp:11111/" target="_blank">83.shin.fluid.cse.nagoya-u.ac.jp:11111</a><br>
Accepting connection(s): <a href="http://83.shin.fluid.cse.nagoya-u.ac.jp:11111/" target="_blank">83.shin.fluid.cse.nagoya-u.ac.jp:11111</a><br>
-------------------------------------------------------------------<br>
<br>
2) Then I add this information in the paraview I am
running on my Mac as<br>
shown in the attached image file.<br>
<br>
3) I click on connect.<br>
<br>
I get the following error:<br>
------------------------------------------------------------------------<br>
ERROR: In /Users/pradeep/softwares/ParaView/VTK/Common/System/vtkSocket.cxx,<br>
line 481<br>
vtkClientSocket (0x7fc9ae108cb0): Socket error in
call to connect.<br>
Permission denied.<br>
-----------------------------------------------------------------------<br>
<br>
I dont have any expertise in networking and so I
dont know much about<br>
firewalls of my systems here nor do any my
colleagues do.<br>
<br>
Thanks in advance,<br>
Pradeep<br>
<br>
<br>
<br>
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