Re: remote kernel problem
- To: mathgroup at smc.vnet.net
- Subject: [mg111726] Re: remote kernel problem
- From: Nate Dudenhoeffer <dudenhoeffer at wisc.edu>
- Date: Wed, 11 Aug 2010 04:49:00 -0400 (EDT)
Here is my launch command: `java` -jar "`mathssh`" nate at xxx.xxx.xxx.xxx:22 /Applications/Mathematica.app/Contents/MacOS/MathKernel -mathlink -LinkMode Connect -LinkProtocol TCPIP -LinkName "`linkname`" -LinkHost `ipaddress` Nate On Tue, Aug 10, 2010 at 2:56 AM, Cristobal Navarro <axischire at gmail.com>wrote: > i also tried and it didnt work. > all i know is that ssh is not the problem because i always everyday with it > on the remote node. > > could you copy to me your arguments ?? > thanks! > > On Mon, Aug 9, 2010 at 7:36 PM, Nate Dudenhoeffer <dudenhoeffer at wisc.edu > >wrote: > > > My launch command looks the same with the exception that instead of > having > > the host name I have the IP address including the port (22). That > wouldn't > > be practical if you have a dynamic IP, but you could use the current IP > to > > see if that's where the issue is. > > > > I also use a ssh key pair without a password, but that shouldn't make any > > difference. > > > > Nate > > > > > > On Mon, Aug 9, 2010 at 6:29 PM, Cristobal Navarro <axischire at gmail.com > >wrote: > > > >> i tested what you suggested Nate, > >> > >> instead of just puting "math" in the argument. > >> i put complete path > >> > >> /usr/local/bin/math > >> > >> but i get the same error when testing a 2+2 example. > >> > >> if this is useful: > >> the arguments of MLOpen: > >> -LinkMode Listen > >> -LinkProtocol TCPIP > >> -LinkOptions MLDontInteract > >> > >> the arguments of shell command to launch kernel > >> `java` -jar `mathssh` fcluster@agua /usr/local/bin/math -mathlink > >> -LinkMode Connect -LinkProtocol TCPIP -LinkName "`linkname`" -LinkHost > >> `ipaddress` > >> > >> fcluster is the account on the remote node which has hostname "agua". > >> my laptop uses another account, from what i know it is not necesary to > >> have the same username on both nodes right? > >> > >> On Mon, Aug 9, 2010 at 5:31 PM, Nate Dudenhoeffer < > dudenhoeffer at wisc.edu>wrote: > >> > >>> Cristobal, > >>> > >>> I had a similar problem setting up remote kernels on Mac OS. In the > >>> kernel configuration try putting the complete path to the kernel, > instead of > >>> simply "math." > >>> > >>> On Mac OS the path is: > >>> /Applications/Mathematica.app/Contents/MacOS/MathKernel > >>> > >>> Regards, > >>> Nate > >>> > >>> On Mon, Aug 9, 2010 at 4:13 AM, Cristobal Navarro <axischire at gmail.com > >wrote: > >>> > >>>> hello, > >>>> > >>>> i am having problems launching remote kernels. > >>>> i have a Xeon server (Linux) on which mathematica is installed, and > >>>> the "math" command works. > >>>> > >>>> on my laptop, i have linux too, and on mathematica i add the kernel to > >>>> be launched on the remote (the server) node. > >>>> then i try one example: > >>>> 2+2 > >>>> > >>>> i press shift+enter... mathematica asks me to insert the password of > >>>> the remote node user name.... ok and then i get error message: > >>>> > >>>> "The kernel serverKernel failed to connect to the front end. (Error = > >>>> MLECONNECT). You should try running the kernel connection outside the > >>>> front end." > >>>> > >>>> for debugging purposes, i made a kernel for my same laptop, just like > >>>> a "Local" kernel but i choose remote and put my ip adress and my > >>>> useracount of my laptop. > >>>> > >>>> i test 2+2, it asks my password..ok, then the same message: > >>>> > >>>> "The kernel self failed to connect to the front end. (Error = > >>>> MLECONNECT). You should try running the kernel connection outside the > >>>> front end." > >>>> > >>>> this is really weird. > >>>> > >>>> the parameters of the "self kernel" are this: > >>>> `java` -jar `mathssh` fcluster@agua math -mathlink -LinkMode Connect > - > >>>> LinkProtocol TCPIP -LinkName "`linkname`" -LinkHost `ipaddress` > >>>> > >>>> if remote kernel does not work with my same computer, i better not > >>>> keep trying with the server yet. > >>>> > >>>> any help is welcome, i really dont know what is going on. > >>>> > >>>> best regards > >>>> Cristobal. > >>>> > >>>> > >>>> > >>> > >> > > > > >