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Re: remote kernel problem

  • To: mathgroup at smc.vnet.net
  • Subject: [mg124326] Re: remote kernel problem
  • From: Ted Sariyski <tsariysk at craft-tech.com>
  • Date: Tue, 17 Jan 2012 03:22:03 -0500 (EST)
  • Delivered-to: l-mathgroup@mail-archive0.wolfram.com
  • References: <jesuho$cgd$1@smc.vnet.net> <201201162213.RAA15486@smc.vnet.net>

I forgot to mention that firewalls on both ends are disabled, and that 
connection is through vpn.
Thanks,
--Ted


On 01/16/2012 05:13 PM, yitzhakbg wrote:
> A lot of people have reported on the complexity of configuring remote kernels.
> If both your front end and the remote kernel are on the LAN, then make sure that you don't have firewalls running on the two machines which might block the traffic. Windows usually activates the firewall by default
>

Hi,
I have a remote configuration from Windows7 (64 bit) to a Linux x86_64
(Ubuntu11.10). I set the Notebook kernel to remote. When I execute (2+2)
I get a password window. On the remote machine I see that the
authentication passed and I see that a remote math session to be launched:

tsariysk 19772  0.0  0.0 235828 20268 ?        Ssl  07:40   0:00
/usr/local/Wolfram/Mathematica/8.0/SystemFiles/Kernel/Binaries/Linux-x86-64/MathKernel
-mathlink -LinkMode Connect -LinkProtocol TCPIP -LinkName
52956 at 192.168.1.153,52957 at 192.168.1.153  -LinkHost 192.168.191.14

Still,  (2+2) is never evaluated.  After a while I get an error message:

"The kernel craft28 failed to connect to the front end. (Error =
MLECONNECT). You should try running the kernel connection outside the
front end."

which I do  not understand. What is wrong and how can I track this problem?

Thanks in advance,
--Ted




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