Out-of-order execution
Computing paradigm to improve computational efficiency / From Wikipedia, the free encyclopedia
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"OOE" redirects here. For other uses, see Ooe (disambiguation).
In computer engineering, out-of-order execution (or more formally dynamic execution) is a paradigm used in high-performance central processing units to make use of instruction cycles that would otherwise be wasted. In this paradigm, a processor executes instructions in an order governed by the availability of input data and execution units,[1] rather than by their original order in a program.[2][3] In doing so, the processor can avoid being idle while waiting for the preceding instruction to complete and can, in the meantime, process the next instructions that are able to run immediately and independently.[4]