Hello,<div><br></div><div>I am trying to establish a connection between my workstation (Mac OS 10.7.4, Paraview via binary installer version 3.14.1 64-bit) and a remote server. On the server side, I built an mpi-enabled paraview from scratch, following the instructions on the wiki, but using the intel compiler (2012.0.032) and the SGI MPI library (mpi-sgi/mpt.2.04.10789). This was no small task, but as far as I can tell, the build was completely successful. The server version is 3.14.1-1217-g611f58e.</div>
<div><br></div><div>The essence of the problem is a "Client/server version hash mismatch" error, which paraview suggests is due to mismatched versions. However, my client and server versions the same. Below is a detailed description of the problem. I have invested a lot of time in this so far and now very frustrated to be stuck. I sincerely appreciate any help you can offer.</div>
<div><br></div><div>Best Regards,</div><div>Ryan Abernathey</div><div><br></div><div><br></div><div><br></div><div>DETAILS</div><div><br></div><div>The server nodes are behind a front-end node, so I have to use ssh tunneling. Following the wiki instructions (<a href="http://paraview.org/Wiki/Reverse_connection_and_port_forwarding#A_Forward_Connection_Over_an_ssh_Tunnel">http://paraview.org/Wiki/Reverse_connection_and_port_forwarding#A_Forward_Connection_Over_an_ssh_Tunnel</a>) I am able to establish an ssh tunnel for a forward connection. I have verified that the client on my local host is able to open a connection to the server. The steps I take are:</div>
<div>1) Run an interactive PBS job to to get a compute node.</div><div>2) Knowing the host name of the compute node, I establish an ssh tunnel from my workstation like this:</div><div>[LOCAL_WORKSTATION]$ ssh -v -L 11111:COMPUTE_NODE:22222 FRONT_END_HOST -N</div>
<div>3) Then I start the paraview server on the host</div><div>[COMPUTE_NODE]$ mpiexec pvserver --server-port=22222</div><div>4) Finally, I connect to the server from my workstation using the paraview client GUI. The settings are Server Type: Client / Server; Host: localhost; Port: 11111.</div>
<div><br></div><div>Since I used a verbose SSH tunnel, I can verify that the tunnel is working:</div><div><div>debug1: Connection to port 11111 forwarding to COMPUTE_NODE port 22222 requested.</div><div>debug1: channel 2: new [direct-tcpip]</div>
<div>debug1: channel 2: free: direct-tcpip: listening port 11111 for r211i0n0 port 22222, connect from 127.0.0.1 port 58973, nchannels 3</div></div><div>(I have to admit that I don't understand what the last line means.)</div>
<div><br></div><div>This is where the errors start. On the server side, I see:</div><div><div>Waiting for client...</div><div>Connection URL: cs://COMPUTE_NODE:22222</div><div>Accepting connection(s): COMPUTE_NODE:22222</div>
<div>ERROR: In /u/rpaberna/paraview/src/ParaView/VTK/Parallel/Core/vtkSocketCommunicator.cxx, line 506</div><div>vtkSocketCommunicator (0x1b2d2d0): Client/server version hash mismatch.</div></div><div><br></div><div><br></div>
<div>On the client side, I see:</div><div><div>ERROR: In /Source/ParaView/release/ParaView/VTK/Parallel/vtkSocketCommunicator.cxx, line 615</div><div>vtkSocketCommunicator (0x115f85830): Client/server version hash mismatch.</div>
<div><br></div><div><br></div><div>ERROR: In /Source/ParaView/release/ParaView/ParaViewCore/ClientServerCore/vtkTCPNetworkAccessManager.cxx, line 321</div><div>vtkTCPNetworkAccessManager (0x10c655f20): Failed to connect to localhost:11111. Client-Server Handshake failed. Please verify that the client and server versions are compatible with each other</div>
<div><br></div><div><br></div><div>ERROR: In /Source/ParaView/release/ParaView/ParaViewCore/ServerManager/vtkSMSessionClient.cxx, line 257</div><div>vtkSMSessionClient (0x11650da80): Some error in socket processing.</div>
</div><div><br></div><div><br></div><div>The connection fails.</div><div><br></div>