[kepler-users] Kepler help
Hi Michael, The MatlabExpression actor calls the local shared library for Matlab, which it needs to be able to find. If you read the actor documentation in the Actor Reference Manual (or from the Help menu in Kepler), it describes how to set the appropriate environment variables before running Kepler. https://code.kepler-project.org/code/kepler-docs/trunk/outreach/documentation/shipping/ActorReference.pdf Check if you can run the demo Matlab workflow (in demos/Matlab/MatlabExpression.xml) which is working for me. Its important that the environment variable be set when you launch Kepler, which it may not be if you use the .exe or .app launcher. Instead, set the appropriate environment variables and then launch from the command line as explained in the demo workflow. Its hard to help with your specific problem without knowing which operating system you are using and which version of Kepler you have. If you provide more info, Daniel Crawl from SDSC might be able to help more. In general, if you want to reach the developers with support questions, use the 'kepler-users at kepler-project.org' mailing list. See the web site for details on subscribing to that list. Regards, Matt On Tue, Feb 3, 2009 at 7:46 AM, Michael Hernandez mherna48 at illinois.edu wrote: Dear Mr. Jones, My name is Mike Hernandez, and I'm interested in Kepler. I'm trying to use the matlab expression, but am not succeeding. I looked through some of the mailing list FAQ threads and saw your email, I hope you can help me or direct me to someone who can. I've looked over the tutorials, and I don't know what I'm doing wrong. Could you please help me out? I've attached my attempt at getting it to work. Also, how can I check to see that I did the setPATH instruction correctly? -- Michael Hernandez SHPE | UIUC Alumni Relations Chair Electrical Engineering Cell#: 847-736-3889 -- Matthew B. Jones Director of Informatics Research and Development National Center for Ecological Analysis and Synthesis (NCEAS) UC Santa Barbara jones at nceas.ucsb.edu Ph: 1-907-523-1960 http://www.nceas.ucsb.edu/ecoinfo
[kepler-users] For loop
Hi Michael: I'm not sure I exactly understand what you're after, in particular, given the subject For loop. But here is an attempt at an answer: In Kepler most workflows use a dataflow director (often PN, DDF, or SDF). In a dataflow model of computation an actor A can fire repeatedly, i.e., we can think of A executing a sequence of firings or invocations A1, A2, A3, ... For example, consider an actor A which reads one token x, computes y = A(x), then writes one token y. If you feed A with a sequence of tokens [x1,x2, , xn] then it will output a sequence of tokens [y1,y2, .., yn] where y_i = A_i(x_i), with A_i denoting the i'th firing of A. Now the whole process can be understood as iterating (in the style of a For loop) over the input sequence (or stream), producing outputs along the way. There's much more to this though. A possible starting point for reading is here: The Semantics of Dataflow with Firinghttp://ptolemy.eecs.berkeley.edu/publications/papers/08/DataflowWithFiring/by Edward A. Lee and Eleftherios Matsikoudis. plus of course the Ptolemy documentation or Kepler documentation. (I don't have a specific pointer handy ... Does someone else?) best Bertram On Tue, Feb 3, 2009 at 5:54 AM, Michal Owsiak michalo at man.poznan.pl wrote: Hello all, I want to build composite actor which will read input from multiport. Additionally, I want to go through all the Tokens from input port and perform some action using each token. Is it possible to go through all the elements from input port in Kepler workflow? Another question is: is it possible to pass an array as a parameter into composite actor and then go through all the elements in this array? Any suggestions will be highly appreciated. Cheers Michal -- Michal Owsiak michalo at man.poznan.pl Poznan Supercomputing and Networking Center ul. Noskowskiego 10, 61-704 Poznan, POLAND http://www.man.poznan.pl ___ Kepler-users mailing list Kepler-users at kepler-project.org http://mercury.nceas.ucsb.edu/kepler/mailman/listinfo/kepler-users -- next part -- An HTML attachment was scrubbed... URL: http://mercury.nceas.ucsb.edu/kepler/pipermail/kepler-users/attachments/20090203/71cca27d/attachment.html
[kepler-users] For loop
Hello all, I want to build composite actor which will read input from multiport. Additionally, I want to go through all the Tokens from input port and perform some action using each token. Is it possible to go through all the elements from input port in Kepler workflow? Another question is: is it possible to pass an array as a parameter into composite actor and then go through all the elements in this array? Any suggestions will be highly appreciated. Cheers Michal -- Michal Owsiak michalo at man.poznan.pl Poznan Supercomputing and Networking Center ul. Noskowskiego 10, 61-704 Poznan, POLAND http://www.man.poznan.pl
