MATLAB: I can’t use matalbpool

matalbpool

Hello, I when I write matlabpool in may computer have one err. I donto know why?

help me!

Best Answer

Close all the MATLAB sessions running on your computer and try again.

Related Solutions

MATLAB: Can’t do this

With minimal changes. Improvements are possible.

close all; 
clear all;
l=50;R=100;T=68;m=0.000125;w0=0.1;t=0;
mu=m/l;c=T/mu;
r=2;x0=l/r;
iter=1;
for x=1:33;
    iter=1;
        for n=1:5000;
        wxt=((4*w0)/pi)*exp(-R*t)*((l/(pi*n^2*x0))*sin((n*pi*x0)/l)-(1/n)*cos((n*pi*x0)/l)+(l/(2*n*x0))*cos((n*pi*x0)/l))*sin((n*pi*x)/l)*cos((c*n*pi*t)/l);
        %wxtrec(iter)=wxt;
        wxtrec(n)=wxt;  %NEW
        iter=iter+1;
        end
    w=sum(wxtrec)
    %wrec(iter)=w;
    wrec(x)=w;  %NEW AND IMPROVED
    iter=iter+1;
end
plot(x,wrec)

MATLAB: Using parfor and parfeval in separate pools

I don't think it'll be beneficial nor possible. I get an error like this, since you can't have multiple pools running. Matlab won't know which pool to distribute which data:

 parpool(16)
 p = gcp();
 parpool(4)
 q = gcp()
 Error using parpool (line 104)
 Found an interactive session. You cannot have multiple interactive sessions 
 open simultaneously. To terminate the existing session, use 'delete(gcp('nocreate'))'.

This seems like the simplest use of parfor for 20 cores:

 parpool(20)
 parfor i = start:last % p
   B(i) = func2(A(i));
 end

If this was for working around the 16-core limit when using parpool, this limit was removed in R2014a. See notes here for R2014a, 1st line: https://www.mathworks.com/help/releases/R2017a/distcomp/release-notes.html?rntext=&startrelease=R2014a&endrelease=R2017a

Best Answer

Related Solutions

MATLAB: Can’t do this

MATLAB: Using parfor and parfeval in separate pools

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