Parallel computing with a large matrix and its transpose

I have a large array to work with; it's size is about 255MB. My computer can store the original matrix only, not its transpose, as that will require another 255MB. I would like to use Parallel computing to store the transpose array.

But very limited resources exist on the net regarding parallel computing Toolbox. Can anyone tell me how to directly store the transpose in different worker computers without storing it in my computer? Since I am a beginner, it will be very helpful if you share the code.

My array has about 30 million elements.