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javaeclipsenumbersejml

Limits for matrix size

I started using EJML for matrix calculations . I want to know the limits of data a matrix can hold. To do this I used following lines and I faced a very strange problem.

DMatrixSparseCSC TesT = new DMatrixSparseCSC(175285 , 80201 );
    for (int i1 = 0 ; i1 < 17584 ; i1++) {
        for(int j = 0 ; j < 5000 ; j++)
        TesT.set(i1, (int) Math.round(Math.random() * j), 1);
    }

When I try to debug this code after i1 reaches 218 and j reaches 2088 the debugger stops to do anything and got stuck on inner loop and all control buttons went to disabled state i.e "stepin" , "stepover" etc . Does anyone have an idea what could be the reason behind this.

Solution

  • What version are you using? There was a bug in v0.34 that limited the use. In v0.35 you can now have 2**31 elements in a sparse matrix.