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HP C/HP-UX Release Notes for HP-UX 11i: HP 9000 Computers > Chapter 1 New and Changed Features Dot Product Optimization |
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Dot product optimization can be used to achieve more efficient use of the PA-RISC 2.0 architecture, resulting in significant runtime improvements. This optimization is only available at +O3 or +O2 optimization levels. To invoke dot product optimization (also known as sum reduction), you must use the +Onofltacc optimization flag on the command line. |
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