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Row major / column major [message #83017] Thu, 31 January 2013 15:19
markjamie is currently offline  markjamie
Messages: 30
Registered: November 2012
Member
I can hear you all sigh already.... I know... We've all been here before... but after all my reading I'm still utterly confused.

I need to loop over the large dimension of a 3 x very large array,let's say 3 x 1E9. Sadly, given the operation I'm performing, there's no easy way to get round the loop using histogram etc.

To improve the loop efficiency should the array be defined as:

Myarray = intarr(3,1E9)

Or

Myarray = intarr(1E9,3)

Does it matter at all? Have I got totally the wrong idea with this?

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