New Post: Densematrix overflow exception and outofmemory exception

Hi all,

I was trying to work with very large matrices in C# using Math.Net library when I met the following exceptions.

private static DenseMatrix OutOfMemoryTest()
        {
            var testMat = new DenseMatrix(1000000, 7500, 10.5);
            return testMat;
        }

If I tried to create a large matrix like above, a exception was thrown.

Arithmetic operation resulted in an overflow.

private static DenseMatrix OutOfMemoryTest()
        {
            var testMat = new DenseMatrix(100000, 7500, 10.5);
            return testMat;
        }

If I cut the row numbers to 100000, the library threw an OutOfMemory Exception.

Exception of type 'System.OutOfMemoryException' was thrown.

Finally, if I even cut the row number to 10000, but change the return value to double array.

private static double[,] OutOfMemoryTest()
        {
            var testMat = new DenseMatrix(10000, 7500, 10.5);
            return testMat.ToArray();
        }

It did allow me to successfully create the matrix but failed to return the array.

Exception of type 'System.OutOfMemoryException' was thrown.

I am wondering if I misused the library or is there anything about memory I mislook? Or is it simply the library's problem?

Am I missing anything here? Please help. Thanks all.

Ben