[Jprogramming] Multiply&sum for two big arrays

[Anssi Sepp�l]

I have two big 2-dimensional arrays in mapped files A and B. I need 
to calculate +/ A * B efficiently and without "out of memory".

In the case A was a vector the . (dot) can make it +/ . * , but this 
does not work if A is a matrix. Is there a way to do this without a 
program loop?

Anssi

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