Re: launching a kernel on a remote linux machine through ssh from a linux machine

*To*: mathgroup at smc.vnet.net*Subject*: [mg52504] Re: launching a kernel on a remote linux machine through ssh from a linux machine*From*: D Herring <dherring at at.uiuc.dot.edu>*Date*: Tue, 30 Nov 2004 05:24:08 -0500 (EST)*References*: <co4edo$lc1$1@smc.vnet.net> <co6hqb$nqe$1@smc.vnet.net> <co99d6$h7p$1@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

Hi Walter, I can't get this working either. Here's what I learned, though. The two little boxes under "Advanced Options" can be tested through normal tools. The first box, "-LinkMode Listen -LinkProtocol TCPIP -LinkOptions MLDontInteract" is roughly equivalent to typing (on lamo) LinkCreate[LinkProtocol->"tcpip"] (Does anyone know what integer MLDontInteract translates to?) The second box is simply the SSH command. The closest I came to getting this working was with the following sequence of events. Maybe you can see what I'm doing wrong. Mathematica input is prefixed by "system:> "; shell input by "system>> "; notes/musings by "...". Note that firewalling restricts the ports I can use; an available port number is designated as PORT1. lamo:> link=LinkCreate["PORT1", LinkProtocol->"tcpip"] .... Why does this command open up 2 ports?? .... LinkCreate["PORT1,PORT2"] gives me control over both... lamo>> netstat -at .... (Linux command) see that PORT1 is open for listening lamo>> ssh -R PORT1:localhost:PORT1 username@fast fast>> netstat -a -P tcp -f inet .... (Solaris command) see that SSH opened PORT1 for forwarding fast>> math fast:> l=LinkConnect["PORT1", LinkProtocol->"tcpip"] fast:> LinkWrite[l,"hello??"] .... link is dead... fast:> Exit fast>> exit lamo:> LinkClose[l] Maybe a similar line of attack works? If so, packaging up the correct steps into the format for the kernel dialog shouldn't be too hard. The only useful newsgroup post I could find was http://forums.wolfram.com/mathgroup/archive/1999/Nov/msg00264.html The page it refers to is gone, but I think it moved to http://support.wolfram.com/mathematica/kernel/configure/windows/mannonunix.html However, this information is for MS Windows from a few years ago. Later, Daniel