I'm having trouble setting-up a parallel remote kernel. I have correctly set-up remote kernels and can use them instead of the local kernels, by executing tunnel.sh script as explained here

However I can't manage to use remote parallel kernels in addition to the local kernels. I tried to use the WolframSSH.jar as described here

MathKernel process is launched, but dies after a few second of freeze.

Then I tried with :

          "ssh -v remoteuser@remoteIP math -mathlink -linkmode Connect \
          `4` -linkname `2` -subkernel -noinit 1>out.txt 2>err.txt"

The MathKernel process launches on the remote machine, but dies straight away

The out.txt output is then:

LinkConnect::linkc: -- Message text not found -- ( LinkObject[46644@remoteIP,52289@remoteIP, 3, 1])

The err.txt output is then:

debug1: Sending command: math -mathlink -linkmode Connect -linkprotocol TCPIP -linkname 46644@remoteIP,52289@remoteIP -subkernel -noinit debug1: client_input_channel_req: channel 0 rtype exit-status reply 0 debug1: channel 0: free: client-session, nchannels 1 debug1: fd 0 clearing O_NONBLOCK debug1: fd 1 clearing O_NONBLOCK debug1: fd 2 clearing O_NONBLOCK Transferred: sent 3232, received 2412 bytes, in 0.3 seconds Bytes per second: sent 12332.3, received 9203.4 debug1: Exit status 1

Local and remote machine are running Mathematica 10.0 under Linux (Ubuntu). I'm not using a VPN but just ssh connection.

Any ideas ?

  • 1
    $\begingroup$ Tell us about your infrastructure configuration, including number of processors; types of machines and operating systems (local and remote); network (including your local and remote networks, and what VPN you use if any); number of Mma licenses; license versions. Best to add all of this to your question. $\endgroup$
    – Jagra
    May 7 '15 at 16:59
  • $\begingroup$ Somewhat related. Note that WolframSSH.jar in v10 seems to have some problems with it. $\endgroup$ May 7 '15 at 23:29

I've solved the problem by using the tunnel_sub.sh from Sacha Kratky script provided here. Thank you

  • $\begingroup$ The Tunnel scripts are now hosted at GitHub. $\endgroup$
    – sakra
    Jun 7 '15 at 14:27
  • $\begingroup$ The tunneling works perfectly here. Windows - Windows setup. Thanks. $\endgroup$
    – masterxilo
    Feb 6 '17 at 0:54

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