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MathGroup Archive 2005

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JLink discover and link to an already running kernel from a Java App

  • To: mathgroup at smc.vnet.net
  • Subject: [mg61579] JLink discover and link to an already running kernel from a Java App
  • From: j michopoulos <john.michopoulos at nrl.navy.mil>
  • Date: Sat, 22 Oct 2005 05:11:25 -0400 (EDT)
  • Organization: NRL
  • References: <43570892.3010702@nrl.navy.mil>
  • Reply-to: john.michopoulos at nrl.navy.mil
  • Sender: owner-wri-mathgroup at wolfram.com

Another variation of my previous posting (see below) can be expressed as 
follows:

Is it possible to detect from within a Java app if a Mathematica Kernel 
is already running and after that connect to it? If yes, how?

I would enormously appreciate it if somebody could point me to an 
example or document that will shed some light on this, or, 
alternatively, share his/her experience on the subject.

Thanks greatly,

-john michopoulos
========================================
John G. Michopoulos, Ph. D.
Naval Research Laboratory,
Center of Computational Material Science
Special Projects Group, Code 6390.2
Computational Multiphysics Systems Lab.
4555 Overlook Ave. SW, Washington DC 20375
tel.202.767.2189
e-mail: john.michopoulos at nrl.navy.mil

j michopoulos wrote:
> While one can use the ShareKernel[] call within mathematica to share one 
> kernel with multiple front-ends as explained in 
> http://support.wolfram.com/mathematica/mathlink/general/sharekernel.html, 
> I cannot find anywhere any info how to share a kernel that was started 
> by one instance of a Java App front end via a standard 
> MathLinkFactory.createKernelLink(...) call, and then be discovered by 
> another application or instance of the previous App to continue 
> expression evaluation under the original kernel.
> 
> I have created Mathematica actors for the Ptolemy-II system 
> (http://ptolemy.eecs.berkeley.edu/ptolemyII/) that open and close the 
> kernel around the designated expression evaluation for the purpose of 
> automating theory generation, but now I need a variant of these actors 
> that exploit the same environment and that requires that they both 
> access the same Kernel which makes it a special case of he problem I 
> described in the previous paragraph.
> 
> I would enormously appreciate any help along these lines..
> 
> 
> -- john m.
> ========================================
> John G. Michopoulos, Ph. D.
> Naval Research Laboratory,
> Center of Computational Material Science
> Special Projects Group, Code 6390.2
> Computational Multiphysics Systems Lab.
> 4555 Overlook Ave. SW, Washington DC 20375
> tel.202.767.2189
> e-mail: john.michopoulos at nrl.navy.mil
> 


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