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very slow 3d array access

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codeguru

codeguru

Computer
Joined
Jan 26, 2006
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1
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Hi!
just a simple question:
I have a 3d array in signed shorts in the dimensions 640x480x64, that should consume memory below 100 MB.

Then I start to index x and y in two for loops and get an 1-dimensional array of 64 elements.

The question is why the performance is slow? it needs 4 hours just to access all data!

My system: P4, 2.4 GHz, 1 GB RAM, XP
 
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