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<p class="MsoNormal"><font face="Arial,sans-serif" size="2"><b style="">Paraview
-
render-server/data-server<o:p></o:p></b></font></p>
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<p class="MsoNormal"><font face="Arial,sans-serif" size="2"><o:p></o:p></font></p>
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<p class="MsoNormal"><font face="Arial,sans-serif" size="2"><o:p></o:p></font></p>
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<p class="MsoNormal"><font face="Arial,sans-serif" size="2">I have a
few questions regarding Paraview and the way it
works in client/server mode.</font></p>
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<p class="MsoNormal"><font face="Arial,sans-serif" size="2"><o:p></o:p></font></p>
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<p class="MsoNormal"><font face="Arial,sans-serif" size="2">My overall
goal is to setup Paraview to distribute the data
calculations (e.g. filters, manipulation of large data sets, etc) and
the
rendering of our data across a cluster of linux boxes.</font></p>
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<p class="MsoNormal"><font face="Arial,sans-serif" size="2"><o:p></o:p></font></p>
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<p class="MsoNormal"><font face="Arial,sans-serif" size="2">I will
start with what I have done:<span style=""> </span>I have configured
Paraview with MPI for linux
(RH 9.1) and Windows.<span style=""> </span>I have configured
a setup wherebye I run Paraview in server mode and it distributes to 6
nodes.<span style=""> </span>Here is the command I am using:<span style=""> </span>mpirun –np 6 –p4ssport xxxx paraview --server</font></p>
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<p class="MsoNormal"><font face="Arial,sans-serif" size="2"><o:p></o:p></font></p>
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<p class="MsoNormal"><font face="Arial,sans-serif" size="2">The
-p4ssport bit is a way of bypassing potential ssh
problems that could come up.<span style=""> </span>It simply
uses mpich’s secure server to run shell commands on other servers, the
only
dissadvantate (I think) is that I have to manually key in the passwords
for
each node everytime I start a Paraview server.</font></p>
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<p class="MsoNormal"><font face="Arial,sans-serif" size="2"><o:p></o:p></font></p>
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<p class="MsoNormal"><font face="Arial,sans-serif" size="2">So…the
server starts…I type in the password for each node
and then it says “waiting for client on port 11111” and instances of
paraview
popup in the system monitor on each linux node.</font></p>
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<p class="MsoNormal"><font face="Arial,sans-serif" size="2"><o:p></o:p></font></p>
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<p class="MsoNormal"><font face="Arial,sans-serif" size="2">I then
connect to the server using the command: paraview --client<span style="">
</span>the client connects successfully and all
seems well and good.<span style=""> </span>I make a
ridiculously large sphere on the client and the system monitor on all
the nodes
start to wizz up to 100%.<span style=""> </span>Then 6 tiles
appear on the server machine containing 6 slices of sphere.<span style=""> </span>Then the final sphere appears on the client
machine.</font></p>
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<p class="MsoNormal"><font face="Arial,sans-serif" size="2"><o:p></o:p></font></p>
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<p class="MsoNormal"><font face="Arial,sans-serif" size="2">So…what is
happening here???<span style="">
</span>Is the rendering of the sphere being distributed or is the data
generation of the sphere being distributed.</font></p>
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<p class="MsoNormal"><font face="Arial,sans-serif" size="2"><o:p></o:p></font></p>
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<p class="MsoNormal"><font face="Arial,sans-serif" size="2">Does
paraview supportdistributed data manipulation (eg, If I
wanted to extract edges on a very high polygon shape would it
distribute the
calculation of doing this).<span style=""> </span>Or does it
only allow distributed rendering of the data once it has been
manipulated on a
single machine?</font></p>
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<p class="MsoNormal"><font face="Arial,sans-serif" size="2"><o:p></o:p></font></p>
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<p class="MsoNormal"><font face="Arial,sans-serif" size="2">I have
tried to set up a data and render server and then
connect using the –crs argument and it does work but only the nodes of
the
render server do anything and the data-server nodes (the nodes started
with the
command --server) don’t appear to be doing anything.<span style=""> </span>But
the rendernodes started by the
–render-server command seem to at least have some activity.</font></p>
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<p class="MsoNormal"><font face="Arial,sans-serif" size="2"><o:p></o:p></font></p>
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<p class="MsoNormal"><font face="Arial,sans-serif" size="2">Could
anyone please shed light on how exactly Paraview works
in this way.</font></p>
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<p class="MsoNormal"><font face="Arial,sans-serif" size="2"><o:p></o:p></font></p>
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<p class="MsoNormal"><font face="Arial,sans-serif" size="2"><o:p></o:p></font></p>
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<p class="MsoNormal"><font face="Arial,sans-serif" size="2">Is there
some classic way of doing what I am trying
todo?<span style=""> </span>How are others doing this?</font></p>
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<p class="MsoNormal"><font face="Arial,sans-serif" size="2"><o:p></o:p></font></p>
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<p class="MsoNormal"><font face="Arial,sans-serif" size="2">Also if
anyone is interested in instructions on compiling
Paraview with MPI on RH Linux 9.1 let me know because it seems that
there might
be demand for this looking through the discussion groups.</font></p>
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<p class="MsoNormal"><font face="Arial,sans-serif" size="2"><o:p></o:p></font></p>
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<p class="MsoNormal"><font face="Arial,sans-serif" size="2">The setup I
am using is a 6 node (to begin with), Athlon 64 3000 each with
0.5gb of ram and all running RH 9.1.<span style=""> </span>As
the client machine I am using a windows Pentium 4 system.<span style="">
</span>The version of Paraview is 1.6.1 and it is
compiled with MPICH 1.x.x.</font></p>
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<p class="MsoNormal"><font face="Arial,sans-serif" size="2">Any help
would be great.</font></p>
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<p class="MsoNormal"><font face="Arial,sans-serif" size="2"><o:p></o:p></font></p>
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<p class="MsoNormal"><font face="Arial,sans-serif" size="2">Regards</font></p>
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<p class="MsoNormal"><font face="Arial,sans-serif" size="2"><o:p></o:p></font></p>
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<p class="MsoNormal"><font face="Arial,sans-serif" size="2">Nick</font></p>
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<p class="MsoNormal"><font face="Arial,sans-serif" size="2">---------------------------------</font></p>
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<p class="MsoNormal"><font face="Arial,sans-serif" size="2">Nick
Franklin</font></p>
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<p class="MsoNormal"><font face="Arial,sans-serif" size="2">Email:<span style=""> </span><a href="mailto:nickfzx@aol.com">nickfzx@aol.com</a></font></p>
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<p class="MsoNormal"><font face="Arial,sans-serif" size="2">Tel: 415
640 3124</font></p>
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<p class="MsoNormal"><font face="Arial,sans-serif" size="2">---------------------------------</font></p>
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