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MathGroup Archive 2007

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how to configure a remote kernel

  • To: mathgroup at smc.vnet.net
  • Subject: [mg72982] how to configure a remote kernel
  • From: "T.Sariyski" <tsariysk at verizon.net>
  • Date: Sat, 27 Jan 2007 06:17:44 -0500 (EST)

Hi,
I have problems to configure a remote kernel. The local machine is 
WinSP/i386,  the remote is SuSe10.1/x86_64. Both machines are in the 
same LAN, no firewalls, no routers.

As a Shell Command I have:

    ssh 192.168.87.99 -l tsariysk 'math -mathlink -LinkMode Connect 
-LinkProtocol TCPIP -LinkName "`linkname`" -LinkHost `ipaddress`'

When submitted from a command prompt it works (full output is attached 
at the end):

ssh 192.168.87.99 -l tsariysk 'math -mathlink -LinkMode Connect 
-LinkProtocol TCPIP -LinkName "`linkname`" -LinkHost `ipaddress`'
LinkConnect::linkc:
   -- Message text not found -- (LinkObject[0 at 192.168.187.99, 1, 1])
 Cannot initialize Motif graphics

On the remote machine there is a running process:
MathKernel -mathlink -LinkMode Connect -LinkProtocol TCPIP -LinkName  
-LinkHost
 
When I try to start a remote kernel from Mathematica I get a beep on the 
local machine and "Error PAM: Authentication failure for ..." on the 
remote machine. I have password-less connection to the remote machine 
(ssh-agent) and PAM shouldn't be invoked at all.

1. Why a shell command behaves differently when executed from a shell 
and when executed from Mathematica?
2. How to make the connection more verbose? I have no clue where to look 
for debug and how to decrypt the output.
3. In addition to the Help where to find more documentation for this issue?
 
Thanks in advance,
Ted


$  ssh 192.168.87.99 -l tsariysk 'math -mathlink -LinkMode Connect 
-LinkProtocol TCPIP -LinkName "`linkname`" -LinkHost `ipaddress`'
Warning: No xauth data; using fake authentication data for X11 forwarding.
bash: linkname: command not found
bash: ipaddress: command not found

LinkConnect::linkc:
   -- Message text not found -- (LinkObject[0 at 192.168.187.99, 1, 1])
 Cannot initialize Motif graphics

FrontEndObject::notavail:
   A front end is not available; certain operations require a front end.

FrontEndObject::notavail:
   A front end is not available; certain operations require a front end.

FrontEndObject::notavail:
   A front end is not available; certain operations require a front end.

General::stop: Further output of FrontEndObject::notavail
     will be suppressed during this calculation.

UpdateNotebookStyles::badarg:
   NotebookObject expected at position 1 in UpdateNotebookStyles[$Failed]

ReplaceAll::reps:
   {AbsoluteOptions[Null, CommonDefaultFormatTypes]}
     is neither a list of replacement rules nor a valid dispatch table, 
and so
     cannot be used for replacing.

ReplaceAll::reps:
   {CommonDefaultFormatTypes /. AbsoluteOptions[Null, <<23>>s]}
     is neither a list of replacement rules nor a valid dispatch table, 
and so
     cannot be used for replacing.

ReplaceAll::reps:
   {WorkingForm :> Output /. <<1>>, <<1>>, Sym<<11>>ame -> }
     is neither a list of replacement rules nor a valid dispatch table, 
and so
     cannot be used for replacing.

General::stop: Further output of ReplaceAll::reps
     will be suppressed during this calculation.

Utilities`Notation`Private`boxedStringPatternsToPatterns::nonopt:
   Options expected (instead of WorkingForm -> WorkingForm /. {<<3>>}
    ) beyond position 1 in 
Utilities`Notation`Private`b<<12>>tternsToPatterns[
     <<2>>]. An option must be a rule or a list of rules.

Utilities`Notation`Private`boxedStringPatternsToPatterns::nonopt:
   Options expected (instead of WorkingForm -> WorkingForm /. {<<3>>}
    ) beyond position 1 in 
Utilities`Notation`Private`b<<12>>tternsToPatterns[
     <<2>>]. An option must be a rule or a list of rules.

Utilities`Notation`Private`boxedStringPatternsToPatterns::nonopt:
   Options expected (instead of WorkingForm -> WorkingForm /. {<<3>>}
    ) beyond position 1 in 
Utilities`Notation`Private`b<<12>>tternsToPatterns[
     <<2>>]. An option must be a rule or a list of rules.

General::stop: Further output of
    Utilities`Notation`Private`b<<12>>tternsToPatterns::nonopt
     will be suppressed during this calculation.

ToExpression::interpfmt:
   <<1>> is not a valid interpretation format. Valid interpretation formats
     include InputForm and any member of $BoxForms.

ToExpression::interpfmt:
   <<1>> is not a valid interpretation format. Valid interpretation formats
     include InputForm and any member of $BoxForms.

ToExpression::interpfmt:
   <<1>> is not a valid interpretation format. Valid interpretation formats
     include InputForm and any member of $BoxForms.

General::stop: Further output of ToExpression::interpfmt
     will be suppressed during this calculation.




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