Is any body doing parallel computing with matlab here?

I am trying to to some computations and I would like to do it in parallel using parfor or by Opening the matlabpool.. as the current implementations is too slow: result=zeros(25,16000); for i = 1:length(vector1) % length is 25 for j = 1:length(vector2) % length is 16000 temp1 = vector1(i); temp2 = vector2(j); t1 = load(matfiles1(temp1).name) %load image1 from matfile1 t2 = load(matfiles2(temp2).name) % load image2 from matfile2 result(i,j)=t1.*t2 end end It work fine but I would really like to know if there is a way to speed thing up ... Thanks a lot in advance! ...

Dear Colleagues, I would like to call your kind attention to the updated website of the Soft Computing Research Group at the University of Veszprem (Hungary) http://www.fmt.vein.hu/softcomp/ You can download MATLAB Toolboxes: - Fuzzy Clustering MATLAB Toolbox - Genetic Programming MATLAB Toolbox - Interactive Evolutionary Strategy (EASy) MATLAB Toolbox - Constrained Fuzzy Model Identification for the FMID Toolbox independent MATLAB programs related to: - Data mining * Fuzzy clustering based time-series segmentation * Supervised Fuzzy Clustering for the Identification of Fuzzy Classifiers * Fuzzy Modeling with Multidimensional Membership Functions: Grey-Box Identification and Control Design * Compact TS-Fuzzy Models through Clustering and OLS plus FIS Model Reduction * Inconsistency Analysis of Labeled Data * Star plots - MATLAB files for Graphical Representation of trace elements of clinkers - Process control and monitoring * Feedback Linearizing Control Using Hybrid Neural Networks Identified by Sensitivity Approach * Incorporating Prior Knowledge in Cubic Spline Approximation - Application to the Identification of Reaction Kinetic Models * Identification and Control of Nonlinear Systems Using Fuzzy Hammerstein Models - A Simple Fuzzy Classifier based on manuscripts in PDF about - fuzzy model based process control and monitoring - fuzzy clustering and classification - incorpor...

Dear Colleagues, I would like to call your kind attention to the updated website of the Soft Computing Research Group at the University of Veszprem (Hungary) http://www.fmt.vein.hu/softcomp/ You can download MATLAB Toolboxes: - Fuzzy Clustering MATLAB Toolbox - Genetic Programming MATLAB Toolbox - Interactive Evolutionary Strategy (EASy) MATLAB Toolbox - Constrained Fuzzy Model Identification for the FMID Toolbox independent MATLAB programs related to: - Data mining * Fuzzy clustering based time-series segmentation * Supervised Fuzzy Clustering for the Identification of Fuzzy Classifiers * Fuzzy Modeling with Multidimensional Membership Functions: Grey-Box Identification and Control Design * Compact TS-Fuzzy Models through Clustering and OLS plus FIS Model Reduction * Inconsistency Analysis of Labeled Data * Star plots - MATLAB files for Graphical Representation of trace elements of clinkers - Process control and monitoring * Feedback Linearizing Control Using Hybrid Neural Networks Identified by Sensitivity Approach * Incorporating Prior Knowledge in Cubic Spline Approximation - Application to the Identification of Reaction Kinetic Models * Identification and Control of Nonlinear Systems Using Fuzzy Hammerstein Models - A Simple Fuzzy Classifier based on manuscripts in PDF about - fuzzy model based process control and monitoring - fuzzy clustering and classification - incorporation of a priori knowledge in the identif...

Hi, Does the parallel tool box version 4.3 support GPU computing? If not, how to get GPU computing capanility with Matlab 2011a student version? I thought I will order the Matlab 2011a student but the parallel tool box that is available to students (v 4.3) does not mention GPU computing. I will appreciate any advice. Thank you, H You might consider the student version of Jacket, here: http://www.accelereyes.com See comparison description: http://www.accelereyes.com/products/compare "Hamdi " <hamdi.mani@asu.edu> wrote in message <inoni0$fh7$1@fred.mathworks.com>... > Hi, > > Does the parallel tool box version 4.3 support GPU computing? > > If not, how to get GPU computing capanility with Matlab 2011a student version? > > I thought I will order the Matlab 2011a student but the parallel tool box that is available to students (v 4.3) does not mention GPU computing. > > I will appreciate any advice. > > Thank you, > H The parallel computing toolbox for students should be identical to the full commercial version. I've never seen Matlab do cutdown toolboxes for student use. But the Distributed Computing Server is not for sale to students, so you are limited to GPUs and CPUs on your local machine. For some of the GPU stuff in Matlab, see http://www.mathworks.com/discovery/matlab-gpu.html I also note that finally (as far as I can tell, I have not verified this myself), students can now download the 64 bi...

Hello All, I'm working with an aplication that use the matlab engine. I made the C++ program and it is working well in my pc with matlab 2007b, but the same very basic program shows an error when I tried to compile it in a pc with matlab R2010b. The error is about the icuuc32.dll. ¿Why is asking this DLL? How can I solve this?. Thanks¡ ...

Hello all, I would like to spawn multiple matlab processes from an '.m' script. Meaning, run an m-file from a 'parent' Matlab that launches, say, 8 more 'children' matlab processes. I'd like to do it in such a way that the same m-file in the 'parent' is able to close down, or kill, all the 'children' processes. Any suggestions? Joe ...

I downloaded the MS visual C++ 2008 Express Edition and the SDK as detailed in http://www.mathworks.com/support/solutions/en/data/1-6IJJ3L/?solution=1-6IJJ3L My embedded function didnt work at the beginning because I did "mex -setup" before I installed my SDK. But after I installed the SDK, I ran "mex -setup" in Matlab once again and choose the MS visual C++2008 as my compiler. Then, my embedded matlab function worked. Thanks to the contribution from above! ...

I wrote a code in matlab 7a andand it was working over there then i changed computer which was having matlab realease 2009a and it is not working If i install Matlab 7 release 14, will my code work again thanks "moonman" wrote in message <ipmsl7$23v$1@fred.mathworks.com>... > I wrote a code in matlab 7a andand it was working over there > then i changed computer which was having matlab realease 2009a and it is not working > > If i install Matlab 7 release 14, will my code work again thanks Can you be more specific about the fact that your code is not working in 2009a but worked in 2007a? It would be helpful if you could narrow down what is not working in 2009a and provide error messages. Wayne ok thanks wyne i will send error message after some hours ...

What is happening when I type rand(1:10) at the command line? Matlab goes into a 10 minute spin - what's going on? Thanks "Robert" wrote in message <j64asi$5v4$1@newscl01ah.mathworks.com>... > What is happening when I type > rand(1:10) > at the command line? > > Matlab goes into a 10 minute spin - what's going on? > Thanks Hi Robert, You're create a 10-D array with that syntax. Do you just want a vector of 10 uniformly distributed random numbers. x = rand(10,1); % or x = rand(1,10); Wayne Hi Wayne, You're right - that's what I was trying to do... but I was just newbie mucking about trying to work out the syntax and I typed that in - then had a looong wait for Matlab to work through it! Thanks for the explanation. Robert "Robert" wrote in message <j64d2h$dvo$1@newscl01ah.mathworks.com>... > Hi Wayne, > You're right - that's what I was trying to do... but I was just newbie mucking about trying to work out the syntax and I typed that in - then had a looong wait for Matlab to work through it! > Thanks for the explanation. > Robert That's fine. Welcome to MATLAB!!! If that's the worst memory-intensive mistake you ever make, you'll be fine :) I've done much, much worse. Wayne ...

Dear All, I'm trying to develop an Matlab parallel subroutine. But the unparallel code run faster compare to the parallel one. My computer has 2 cores. PARALLEL CODE for ipod=1:nx_target*ny_target; distance = sqrt((xyz_target(1,ipod) -xg)^2 ... +(xyz_target(2,ipod) -yg)^2 ... +(xyz_target(3,ipod) -zg)^2); pres(ipod) = pres(ipod) -exp(k_tmp*distance)/distance*tmp; end UNPARALLEL CODE parfor ipod=1:nx_target*ny_target; distance = sqrt((xyz_target(1,ipod) -xg)^2 ... +(xyz_target(2,ipod) -yg)^2 ... +(xyz_target(3,ipod) -zg)^2); pres(ipod) = pres(ipod) -exp(k_tmp*distance)/distance*tmp; end I would like to understand why. Best regards Didace EKEOM ...

I have written some code in matlab for my application. I want to make a graphical interface so that an user can easily use my code. I do not know, how to link my code or a particular function when user clicks on a particular button. I mean, how to assign a function written by me to a push button so that it will execute the function. And how to give the input to my function and get output after executing the particular function. I am quiet familiar with matlab code. But I am absolutely new with GUI in matlab. Please help me to deal with the above problem. On 4/12/2011 12:37 AM, sk maidul haque wrote: > I have written some code in matlab for my application. > I want to make a graphical interface so that an user can easily use my code. > I do not know, how to link my code or a particular function > when user clicks on a particular button. I mean, how to assign a > function written by me to a push button so that it will execute the function. > And how to give the input to my function and get output after > executing the particular function. > I am quiet familiar with matlab code. But I am absolutely new with > GUI in matlab. Please help me to deal with the above problem. Use GUIDE to make the gui. It is very simple and powerful to use. I use it all the time for my school projects and HW's. I know some prefer to code the thing by hand, but I prefer GUIDE. When you add a button in GUIDE, it will create a callback stub for you automatically...

When I create a MATLAB Coder Project and try to convert this function: ------------------------- function y = myResampler(x,m,n) %#codegen fsVec = [8000 16000 32000 48000]; targetFsVec = [8000 16000 32000 48000]; fs = fsVec(m); targetFs = targetFsVec(n); y = resample(x,targetFs,fs); ------------------------- to C-code I get a build error saying: coder -build resamplerproj.prj ??? The upsample factor P must be constant. Error in ==> myResampler Line: 12 Column: 5 Code generation failed: Open error report. But I want to be able to resample x using a variable P/Q ratio. Is this just a limitation of Matlab Coder or am I doing something wrong?? John wrote: > When I create a MATLAB Coder Project and try to convert this function: > > ------------------------- > function y = myResampler(x,m,n) %#codegen > > fsVec = [8000 16000 32000 48000]; > targetFsVec = [8000 16000 32000 48000]; > > fs = fsVec(m); > targetFs = targetFsVec(n); > > y = resample(x,targetFs,fs); > ------------------------- > > to C-code I get a build error saying: > > coder -build resamplerproj.prj ??? The upsample factor P must be > constant. Error in ==> myResampler Line: 12 Column: 5 Code generation > failed: Open error report. > > > > But I want to be able to resample x using a variable P/Q ratio. > > Is this just a limitation of Matlab Coder or am I doing something wrong?? Apparently it's a limitation of RESAMPLE ...

Long story short, here is the criteria I need. 1) I need two modules running in parallel. One function must activate these two They don't need to START at the same time but both neither return info nor end. They run pretty much infinitely 1.1) I would prefer if the One function also ran separate from the above two in it's own loop but i can deal with a 3'rd function also not ending. 2) I need a shared variable between two of the modules. 1 Module will place information there while the other just reads it, but as they are running parallel. That's it. I can do this in pretty much any other language but matlab I've been having issues with. Problem is I absolutely need to use matlab for one module. If this is impossible to accomplish all in matlab then can i instead run this in C and call one matlab module with separate thread? Sample code below. function mainParallelTest() persistent counter; counter = 0; parfor i=0:2 if (i == 0) ImageProccessorParallelTest(); elseif(i == 1) EventProcessorParallelTest(); elseif(i == 2) prevCounter = 0; tempCounter = 1; while(true) tempCounter = counter; if (tempCounter == prevCounter) %disp('hi') end prevCounter = tempCounter; end end end "Alex Cruikshank" <cruiksam@gmail.com> writes: > Long story short, here is the criteria I need. >...

for i=1:size(APLocation,1) point=APLocation(i,:); parfor j=1:length (RXpoint) rssi(i,j) = LOSS(point,RXpoint(:,j)'); %%rssi having the signal strength from all AP's end end when i'm running the following code, i get the same value for each element of rssi (serially i get different results) where is my problem? Creating some fake data and and implementing a simple LOSS function, I do not see a different between the serial and parallel execution. Does LOSS use any persistent or global variables? function [ rssi rssi2 ] = foo APLocation = rand(10); RXpoint = rand(10) * 5; for i=1:size(APLocation,1) point=APLocation(i,:); parfor j=1:length (RXpoint) rssi(i,j) = LOSS(point,RXpoint(:,j)'); end end for i=1:size(APLocation,1) point=APLocation(i,:); for j=1:length (RXpoint) rssi2(i,j) = LOSS(point,RXpoint(:,j)'); end end end function rv = LOSS( a,b ) rv = sum( a+b ); end "michael" <bezenchu@gmail.com> wrote in message news:ht0t0k$fce$1@fred.mathworks.com... > for i=1:size(APLocation,1) > point=APLocation(i,:); > parfor j=1:length (RXpoint) > rssi(i,j) = LOSS(point,RXpoint(:,j)'); %%rssi having the signal > strength from all AP's > end > end > > when i'm running the following code, i get the same value for each element ...

Many of you who post to this newsgroup are also regular contributors to the MATLAB Central File Exchange. Look for your favorite contributors on our File Exchange Author Profile page. You can read their profiles and see pictures: <http://www.mathworks.com/matlabcentral/reports/fileexchange/allProfiles/> In a random drawing, we recently awarded MATLAB jackets to three File Exchange authors with profile pages: Michele Giugliano, Andrey Egin, and Denis Gilbert. You can win a jacket, too. Just submit a new file to the File Exchange or update your author profile by December 2003 for a chance to win one of four MATLAB jackets. See the jacket below: <http://www.mathworks.com/matlabcentral/images/jeff3.jpg> Here are some interesting File Exchange facts: - Since its inception in 2001, visitors have downloaded more than 1.25 million submissions from the File Exchange. - In September 2003 alone, visitors downloaded 80,085 files, an average of 2670 a day! .... what if the prize was a free copy of the next version of Matlab :-) majb Min Poh wrote: ....or an offer for employment... aj "bourassa" <bourassa-m@rmc.ca> wrote in message news:3f9d507d$1@rmcnt03a.rmc.ca... > ... what if the prize was a free copy of the next version of Matlab :-) > > majb > > Min Poh wrote: > ...

Number of column: 5 Vector A: [ 2 4 6 7 8 ] Vector B : [ 5 7 8 10 1] Choice = 1 : Find the highest value Vector A : 8 Vector B: 10 The highest value : 10 Choice = 2 : Find the lowest value Vector A : 2 Vector B: 1 The highest value : 1 Choice = 3 : Find the average value of : Vector A Vector B "Syamil " <syamilsaid@gmail.com> wrote in message <inq3g8$hhd$1@fred.mathworks.com>... > Number of column: 5 > Vector A: [ 2 4 6 7 8 ] > Vector B : [ 5 7 8 10 1] > > Choice = 1 : Find the highest value > Vector A : 8 > Vector B: 10 > The highest value : 10 > > Choice = 2 : Find the lowest value > Vector A : 2 > Vector B: 1 > The highest value : 1 > > Choice = 3 : Find the average value of : > Vector A > Vector B Type in matlab: doc min doc max doc mean ...

Hello everyone, I have a matlab in class exercise due in few days. I am new to matlab and the instructions provided with the assignment is minimal. Can Someone help me with the basic understanding as in how can I map the problem's solution to matlab script ? I am not able to post question here as it is a jpeg file. Please let me know and then we can discuss further. ...

I did a simple excel macro which runs matlab functions sucessfully in a machine with Matlab installed. Now I want to run it in a computer without matlab, with "MATLAB Compiler Run Time" installed. I can add the Matlb automation server type file (mlapp.tlb) sucessfully, but when I try to run it, I get this error: "ActiveX component can't create object" In this line: Set matlab = New MLApp.MLApp Do you know what is missing? Thanks ...

My problem with matlab script node is related to calling function in matlab. I created an m-file function that takes an imput temperature (from DAQ) and defines a material property. My matlab script node doesn't seem to recognize my function. I have placed the function in the folder the vi is currently located, but it doesn't read it. How do I get matlab script node to read the functions I create in matlab? Add the directory to matlab path, or call the .m file with it full name ( D:\..... \myfile.m) Let me clarify, I have pasted my matlab code into the matlab scrip node. In this code, I have called a subfunction that I have created. Example k(n)=k_c(T(n)) where k_c is a subfunction I have created. How do I get my code in the node to sucessfully read the subfunction k_c? As indicated, you need to add the directory where the .m file containing the function resides to the list of paths that are read in. This is your startup.m file. The other option is to do a "cd" command prior to calling your function to change to the directory where the .m file containing the function resides. Thanks for reiterating the information. My matlab script node is working properly. I had never used the "cd" command in matlab. I always set the working directory when I open the program, and put all the m files into t...

Hi, I am running a MatLab program I've run many times before, and now when I try to run it, I get a message saying : "This program has been modified outside of the MatLab editor. Do you want to reload it?" I've moved the program to a new directory, but I've run MatLab progs from that directory before, so I am perplexed. Can anyone tell me what to do? TIA, Matt In article <972bbd06-3687-4253-9aa0-a08acf91d117@z38g2000hsc.googlegroups.com>, junoexpress <MTBrenneman@gmail.com> wrote: >I am running a MatLab program I've run many times before, and now when >I try to run it, I get a message saying : >"This program has been modified outside of the MatLab editor. Do you >want to reload it?" >I've moved the program to a new directory, but I've run MatLab progs >from that directory before, so I am perplexed. >Can anyone tell me what to do? Use Save As to save the current version under a different name. Then allow Matlab to reload the file. Save that, and then compare the two saved versions to determine what the differences are, and create an appropriately merged version. -- "There is nothing so bad but it can masquerade as moral." -- Walter Lippmann junoexpress <MTBrenneman@gmail.com> wrote in message <972bbd06-3687-4253-9aa0- a08acf91d117@z38g2000hsc.googlegroups.com>... > Hi, >...

In MatLab 6.5, the routine above works normal: figure; sem=Average(:,2)./sqrt(Average(:,3)); bar([1:1:7],Average(:,1),sem); ylabel('% of epochs analyzed') xlabel('Frequency Band') title ('Occurrence of Oscillatory Events - Ch X') %Where Average and sem are vectors; But, in MatLab 7.0, the same code cause the following error: ??? Error using ==> xychk Too many input arguments. Error in ==> bar at 53 [msg,x,y] = xychk(args{1:nargs},'plot'); Error in ==> cross_subj_analysis>ok_Callback at 327 bar([1:1:7],Average(:,1),sem); I'd like to know why this occour. Thanks Henrique In article <g7a1j6$l1$1@fred.mathworks.com>, Henrique Amaral <henriquetomaz@uol.com.br> wrote: >In MatLab 6.5, the routine above works normal: >figure; >sem=Average(:,2)./sqrt(Average(:,3)); >bar([1:1:7],Average(:,1),sem); >ylabel('% of epochs analyzed') >xlabel('Frequency Band') >title ('Occurrence of Oscillatory Events - Ch X') >%Where Average and sem are vectors; >But, in MatLab 7.0, the same code cause the following error: >??? Error using ==> xychk >Too many input arguments. >Error in ==> bar at 53 > [msg,x,y] = xychk(args{1:nargs},'plot'); >Error in ==> cross_subj_analysis>ok_Callback at 327 >bar([1:1:7],Average(:,1),sem); >I'd like to know why this occour. When the third argument is numeric, it must be the bar width. barwidth must b...

Hello, I'm evaluating products for writing my final university thesis. I want to perform image processing algorithms (C-Code compiled for a DSP). I have the feeling that manual programming of this algorithms is no longer state of the art. Instead MDSD (model driven software development) - that means Code Generation - seems to be smarter to me. Unfortunately Mathworks offers no licenses of Matlab Coder (or Simulink Coder etc.) to individual students. And I cannot afford to buy a commercial license (which probably would cost me more than 5.000 EUR/$ / my absolute limit is 1.000 EUR/$). Is there any possibility for me to use MDSD (code generation) for image processing for my university thesis ? Maybe by using cheaper alternatives ? Or by using 3d party software (like target link) ? Or export/import to another product ? Any idea ? (I want to avoid manual coding - like using OpenCV) By the way, does anyone know, why Mathworks hides the MDSD features from students ? It doesn't make sense to me that Mathworks reduces the amount of engineers available on the job market that are capable of handling (serious) Matlab projects. (Microsoft offers the "Visual Studio Express Edition" for free for education and the amount of people on the job market that are experienced in Visual Studio is tremendous.). Thank you, Roelof ...

Hi all, I'm building a java swing based GUI for my Matlab application. As such, user input is available as text strings, for example "{[0; 0], [3.5 0; 0 2]}" (mean vector and covariance matrix of a 2D Gaussian). The user input will be passed to the compiled matlab method as a MWCellArray. Problem is how do a convert (parse) the above string into a MWCellArray? From its javadoc http://www.mathworks.com/access/helpdesk/help/toolbox/javabuilder/MWArrayAPI/index.html the following method is available: java.lang.String toString() Returns a string representation of this array, but the reverse method is not. Evidently, parsing a string like the one above is a non trivial task and I'm loath to attempt writing one by myself. I would be very thankful if someone can point me to the required parser implementation. Matlab itself is carrying out this task all the time, perhaps it is possible to access Matlab's own parser. Help much appreciated, Ritesh ...

I wanna use matlab C++ math library into VC++6.0, but my matlab is 7.1. if i wanna use matlab C++ math library to programme, how can i setup my VC link?? why matlab7.1 doesn't have "extern->include->cpp" file??? In using matlab C++ math library , what difference between matlab 6.X and matlab7.1??? ...

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