[kepler-dev] Running Matlab in Kepler
Daniel Crawl
crawl at sdsc.edu
Thu Mar 20 16:14:54 PDT 2008
Hi Christopher,
Here's a patch.
Thanks,
--dan
Christopher Brooks wrote:
> Hi Dan,
>
> I've tested it under Windows and I believe Solaris. Possibly Linux.
> Santa did not bring me a Mac, though I think one is in my future,
> so I have not tested it on a Mac.
>
> It would probably be easiest for you to create a patch for
> ptolemy/data/expr/UtilityFunctions.java, which I could fold in right
> away. The alternative is remote debugging, which is time consuming.
>
> Or, you could tell me where you added the print statements (just send
> me the method?) and the full name and location of the shared library
> that is to be added. I could make some guesses, but I'll likely be
> wrong and you'll have to edit UtilitiyFunctions.java anyway.
>
>
> _Christopher
>
>
>
> --------
>
>
> Hi Christopher,
>
> I added similar print statements to UtilityFunctions.loadLibrary(),
> and first it tries to load 'ptolemy/matlab/ptmatlab', followed by
> '/libptmatlab'.
>
> This is on a Mac, but the code that constructs the alternate name
> is different depending on if it's Windows or non-Windows. Have you
> tested this on a non-Windows machine?
>
> --dan
>
> Christopher Brooks wrote:
> > Hi Dan,
> >
> > The way ptolemy.matlab.Engine works is that it calls
> > ptolemy.data.expr.UtilityFunctions.loadLibrary(), which tries
> > really hard to load the library using different paths.
> >
> > I added some print statements to loadLibrary(), and you can see that
> > in the default situation is finds $PTII/ptolemy/matlab/ptmatlab.dll
> > and then loads it
> >
> > bash-3.2$ cd $PTII/ptolemy/matlab
> > bash-3.2$ $PTII/bin/vergil -jni demo/MatlabExpression/MatlabExpression.xm
> l
> > loadLibrary: 0 ptolemy/matlab/ptmatlab
> > loadLibrary: 2 about to call System.loadLibrary(ptolemy/matlab/ptmatlab)
> > loadLibrary: 4 about to call System.loadLibrary(C:\cxh\ptII\ptolemy\matla
> b\ptmatlab.dll)
> > loadLibrary: 5 done!
> >
> > If I move the $PTII/ptolemy/matlab/ptmatlab.dll to somewhere in my
> > path ($PTII/bin), then it finds it there as well:
> > bash-3.2$ ls *.dll
> > ptmatlab.dll
> > bash-3.2$ mv *.dll $PTII/bin
> > bash-3.2$ $PTII/bin/vergil -jni
> > loadLibrary: 0 ptolemy/matlab/ptmatlab
> > loadLibrary: 2 about to call System.loadLibrary(ptolemy/matlab/ptmatlab)
> > loadLibrary: 3 about to call System.loadLibrary(ptmatlab)
> >
> > On what platform are you running the Kepler build scripts? Maybe
> > UtilityFunctions.loadLibrary() needs to be updated for that platform?
> >
> > _Christopher
> >
> >
> > --------
> >
> >
> > Hi Christopher,
> >
> > I am updating the Kepler build scripts for the Ptolemy matlab actor.
> > Could you change ptolemy.matlab.Engine to load the JNI library as
> > 'ptmatlab' instead of 'ptolemy/matlab/ptmatlab'? The latter prevents
> > the library from being loaded unless it is in a directory structure
> > that has the form .../ptolemy/matlab/.
> >
> > Thanks,
> >
> > --dan
> >
> >
> > Christopher Brooks wrote:
> > > However, the Ptolemy matlab demo did not run within Kepler:
> > >
> > > ptolemy.kernel.util.IllegalActionException: There was a problem inv
> oking
> > > the Ptolemy II Matlab interface.
> > > The interface has been tested under Windows and Linux,
> > > requires that Matlab be installed on the local machine.Refer to
> > > $PTII/ptolemy/matlab/makefile for moreinformation.
> > > in .MatlabExpression.MatlabExpression
> > > Because:
> > > Did not find 'ptolemy/matlab/ptmatlab' in path, searched user.home
> > > (c:\cxh\src\kepler) user.dir (C:\Documents and Settings\cxh) and th
> e
> > > classpath for 'ptolemy/matlab/ptmatlab.dll', but that was not found
> eithe
> > r.
> > > classpath was:
> > > c:\cxh\src\kepler\build\classes;c:\cxh\src\kepler\build\src;c:\cxh\
> src\ke
> > pler;c:\cxh\src\kepler\configs;c:\cxh\src\kepler\lib;c:\cxh\src\kepler
> \lib\i
> > mages;c:\cxh\src\kepler\build\kepler-icons.jar;c:\cxh\ptII\lib\diva.ja
> r;c:\c
> > xh\ptII\build\ptolemy-doc.jar;c:\cxh\ptII\build\classes;c:\cxh\ptII\bu
> ild\sr
> > c
> > > Also tried loadLibrary("ptmatlab", exception for loadLibrary was:
> > > java.lang.UnsatisfiedLinkError: no ptmatlab in java.library.path
> > > at ptolemy.matlab.Expression.preinitialize(Expression.java:202)
> > > at ptolemy.actor.Director.preinitialize(Director.java:865)
> > >
> > > So, the next step would be to get the Ptolemy Matlab Expression act
> or
> > > to work in Kepler or to try the same experiment in Ptolemy.
> > >
> > > I can't try it right now because my Matlab license has expired.
> > >
> > > _Christopher
> > >
> > >
> > > myerramothu at miners.utep.edu wrote:
> > >
> > >> Hello Everyone,
> > >>
> > >> Thank you Dr. Ludaescher for your reply. The problem that I posted
> in
> > >> Kepler users mailing list was my first question and I think the pr
> oblem
> > >> was because I was running Matlab in Kepler using windows operating
>
> > >> system. I was able to run the Matlab in Kepler without any error u
> sing
> > >> Linux operating system.
> > >>
> > >> My current problem is: I observed a significant slow down in the
> > >> execution of my Matlab functions when they are executed in Kepler.
>
> > >> The Matlab actor I am using is /Matlabexpression/. I am sending yo
> u
> > >> a workflow that calculates the kurtosis and skewness of a Gaussian
>
> > >> random sequence as an attachment to this email. The workflow that
> I am
> > >> sending was developed and executed by me in Linux operating system
> and
> > >> time taken to execute this workflow was approximately 2mins and 10
> secs.
> > >> However, the Matlab instructions used in this workflow can be exec
> uted
> > >> approximately in 1-2secs when typed directly in Matlab command lin
> e.
> > >>
> > >> Your help will be very valuable for me to further use the Kepler.
> > >>
> > >> Please check the attachment to this email.
> > >>
> > >> Thank you very much for your time,
> > >> Sincerely,
> > >> Madhu.
> > >>
> > >>
> > >>
> > >>
> > >> --------------------------------------------------------------
> ------
> > ----
> > >> CC: myerramothu at miners.utep.edu; daks-dev at googlegroups.com;
> > >> crawl at sdsc.edu; cxh at eecs.berkeley.edu; jones at nceas.ucsb.edu
> > >> From: altintas at sdsc.edu
> > >> Subject: Re: Running Matlab in Kepler
> > >> Date: Sun, 2 Mar 2008 21:49:12 -0800
> > >> To: ludaesch at ucdavis.edu
> > >>
> > >> Hi Madhu,
> > >>
> > >> Which Matlab actor are you using? I couldn't find your post t
> o
> > >> kepler-dev. Could you please forward that one as well?
> > >>
> > >> Thanks,
> > >> -ilkay
> > >>
> > >> On Mar 1, 2008, at 2:56 PM, Bertram Ludaescher wrote:
> > >>
> > >> Hi Madhu:
> > >>
> > >> I haven't used the Matlab actor directly, so not sure whet
> her
> > >> the problem you describe is a known issue.
> > >> I'm cc-ing some people who might know.
> > >>
> > >> All (Ptolemy/Kepler people developers):
> > >> Have you witnessed the problem Madhu described?
> > >> I think we use the same Matlab actor in Kepler that is use
> d in
> > >> Ptolemy, yes?
> > >>
> > >> Madhu:
> > >> You might also send a workflow snippet (e.g. MOML) that sh
> ows
> > >> the problem to kepler-dev.
> > >>
> > >> best
> > >>
> > >> BL
> > >>
> > >>
> > >> On Thu, Feb 28, 2008 at 5:20 PM, <myerramothu at miners.utep.
> edu
> > >> <mailto:myerramothu at miners.utep.edu>> wrote:
> > >>
> > >> Hello Dr. Ludaescher,
> > >>
> > >> Sorry to contact you directly.
> > >> I sent an e-mail to the the Kepler mailing list
> > >> about using Kepler with Matlab but I didn't get any re
> ply.
> > >> I'm having the following problem:
> > >> t here is a significant slow down in the execution of
> my Mat
> > lab
> > >> functions when they are executed inside Kepler.
> > >> I would like to know if this is a characteristic of Ke
> pler w
> > ith
> > >> Matlab or if it could be a problem specific to my
> > >> implementation.
> > >>
> > >> Thank you for your attention,
> > >> Sincerely,
> > >> Madhu.
> > >>
> > >> Madhu Kishore Yerramothu
> > >> Graduate Teaching Assistant,
> > >> Department of Electrical and Computer Engineering,
> > >> University of Texas at El Paso
> > >> El Paso, TX 79968.
> > >> Phone: 915 217 4778
> > >> Email: myerramothu at miners.utep.edu
> > >> <mailto:myerramothu at miners.utep.edu>
> > >>
> > >>
> > >>
> > >>
> > >>
> > >>
> > >>
> > > _______________________________________________
> > > Kepler-dev mailing list
> > > Kepler-dev at ecoinformatics.org
> > > http://mercury.nceas.ucsb.edu/ecoinformatics/mailman/listinfo/keple
> r-dev
> > >
> > --------
> >
> --------
>
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