(Remote connection failed) FrontEnd is listing on wrong port?
- To: mathgroup at smc.vnet.net
- Subject: [mg50840] (Remote connection failed) FrontEnd is listing on wrong port?
- From: Holger Meinhardt <hme at vwl3.wiwi.uni-karlsruhe.de>
- Date: Thu, 23 Sep 2004 05:27:23 -0400 (EDT)
- Reply-to: Holger Meinhardt <hme at vwl3.wiwi.uni-karlsruhe.de>
- Sender: owner-wri-mathgroup at wolfram.com
I tried to connect with the Mathematica front end from my working computer (Linux) a remote kernel on a more powerful Unix machine. Unfortunately, it works only partly. I am able to launch the Mathematica kernel on the remote machine, but the results will not be send back. I consulted the MathLink Networking book by Miyaji and Abbott, but I did not find their nor in the net any informations to solve the problem. Probably, I have overlooked or misunderstood something. Below you will find some of my configuration data and network informations. My setting of arguments for MLOpen is -LinkMode Listen -LinkProtocol TCPIP -LinkOptions MLDontInteract To launch a kernel on the remote machine the following arguments are provided ssh username at x.x.x.x "MathKernel" -mathlink -LinkMode Connect -LinkProtocol TCPIP -LinkName "37482 at y.y.y.y" By monitoring the network transfer with netstat I could observe that the MathKernel was started at the remote machine x.x.x.x and sent the results back on the desired port to machine y.y.y.y. tcp 0 1 x.x.x.x:46920 y.y.y.y:37482 SYN_SENT 25788/MathKernel The front end of Mathematica is listing on the following ports on the machine y.y.y.y tcp 0 0 0.0.0.0:50375 0.0.0.0:* LISTEN 16335/Mathematica tcp 0 0 0.0.0.0:50376 0.0.0.0:* LISTEN 16335/Mathematica It seems to me that the problem is related to the fact that the front end is listing on the wrong port numbers. My question is now how it is possible to force the front end of Mathematica to listen on port number 37482. Which command I have to use to establish a network connection of the front end? By the way. Connecting the remote kernel with LinkLaunch and ssh is working without problems. The same happens by starting a Mathematica session on the remote machine by launching the front end directly on the remote computer. I am thankful of any suggestions or hints to solve this problem. Regards, Holger Meinhardt ------------------------------------------------------------------------------- Holger Meinhardt Institute for Statistics and Economic Theory University of Karlsruhe Zirkel 2 D-76128 Karlsruhe Tel.: (+49)(721) 608-3488 Fax.: (+49)(721) 608-3082 E-mail: hme at vwl3.wiwi.uni-karlsruhe.de -------------------------------------------------------------------------------